Oferty pracy Backend Developer — 724+ Ofert

<h2>Hi there! 👋🏻</h2><p>We’re <strong>Tooploox 💎</strong>, a <strong>Solvd Inc</strong>. company.</p><p>We create AI-powered products and services that make a real difference. Our team of nearly 200 specialists - including a 40+ person R&amp;D team with many PhDs - has pioneered AI solutions across industries from healthcare to e-commerce. We’ve published research in top-tier venues like NeurIPS and ICML, while delivering real-world applications that help our clients innovate and scale.</p><p>We are looking for a <strong>Senior Java Developer</strong> to join our team. The ideal candidate will have experience developing scalable Java applications.</p><p><strong>About the project: </strong>We are developing a data retrieval and operations platform for a next-generation customer support system for a global e-commerce leader. The platform will provide a federated GraphQL interface that unifies access to multiple backend services, enabling low-latency, real-time data retrieval and transactional operations to support AI-driven workflows.</p><p><strong>The role will focus on</strong> designing, building and optimizing the platform to ensure scalability, reliability and test automation. This is a multi-team, collaborative initiative that requires close coordination with other delivery teams, adherence to high engineering standards and a strong focus on integration and architectural alignment.</p><h3>What you will do:</h3><ul><li><p><span>Develop and maintain the server-side logic of our applications using Java</span></p></li><li><p><span>Implement efficient and performant backend code for high-volume production applications</span></p></li><li><p><span>Monitor application health, identify related risks, and ensure reliability in production environment</span></p></li><li><p><span>Contribute to all phases of the development lifecycle, from concept to deployment</span></p></li><li><p><span>Review and refactor code, establishing best practices for code hygiene and organization</span></p></li></ul><h3>Experience and skills you need to join us:</h3><ul><li><p><span><strong>5+ years </strong>of backend development experience in Java and Spring Framework</span></p></li><li><p><span>Proficient in <strong>RESTful API </strong>design, experience with <strong>GraphQL APIs</strong></span></p></li><li><p><span>Experience with message brokers (e.g., Kafka, RabbitMQ, ActiveMQ) and caching (e.g., Redis, Memcached)</span></p></li><li><p><span>Proficient with authentication and authorization mechanisms, especially OAuth 2.0</span></p></li><li><p><span>Experience with containerization and orchestration tools like Docker and Kubernetes</span></p></li><li><p><span>Knowledgeable in performance troubleshooting, profiling, and debugging tools</span></p></li><li><p><span>Capable of solving complex challenges related to latency, data consistency, and performance in distributed systems</span></p></li><li><p><span>Understanding patterns of distributed systems design; resilience patterns such as circuit breakers, retries, and timeout</span></p></li><li><p><span>Proficient with code versioning tools, such as Git</span></p></li><li><p><span>Skilled in CI/CD tools and practices</span></p></li><li><p><span>English: B2+ (Written and Oral)</span></p></li><li><p><span>Experience working in a lean agile process</span></p></li><li><p><span>Proactive approach in understand the customer’s business and refining business requirements into technical requirements</span></p></li></ul><h3>It would be great if you also have:</h3><ul><li><p><span>Experience with API contract testing</span></p></li><li><p><span>NoSQL (e.g., MongoDB, Cassandra)</span></p></li><li><p><span>Prompt engineering and experience with integration of GenAI LLMs into productions (ideally) or pet projects at least (OpenAI, Azure OpenAI, Bard, Llama)</span></p></li><li><p><span>Familiarity with federated Graph architectures</span></p></li><li><p><span>Experience mentoring less experienced colleagues is a strong advantage</span></p></li><li><p><span>Team leader experience is a strong advantage</span></p></li><li><p><span>Hands-on experience with Google Cloud Platform</span></p></li><li><p><span>ReactJS experience</span></p></li></ul><h3>The ideal candidate would have:</h3><ul><li><p><span>Strong communication skills with experience in direct customer interactions.</span></p></li><li><p><span>Ability to engage with clients on technical issues, gather requirements, manage expectations and provide updates on project status</span></p></li><li><p><span>Ability to learn quickly, adapt to new technologies, and perform tasks independently</span></p></li><li><p><span>Passion for writing clean, efficient, and maintainable code (and encouraging others to do so)</span></p></li></ul><h3><strong>How we work:</strong></h3><p>At <strong style="border:0px solid rgb(238, 239, 242);font-weight:600;color:inherit;">Tooploox</strong> 💎, you have the <strong style="border:0px solid rgb(238, 239, 242);font-weight:600;color:inherit;">flexibility to choose your working hours ⏰ and location </strong>📍. While we value <strong style="border:0px solid rgb(238, 239, 242);font-weight:600;color:inherit;">remote work</strong>, we also believe in <strong style="border:0px solid rgb(238, 239, 242);font-weight:600;color:inherit;">building relationships </strong>🤝and invite you to join us in our <strong style="border:0px solid rgb(238, 239, 242);font-weight:600;color:inherit;">Warsaw and Wrocław offices </strong>🏢. Enjoy <strong style="border:0px solid rgb(238, 239, 242);font-weight:600;color:inherit;">a relaxed atmosphere </strong>🍃 and try some “home-made” pizza 🍕 from our office pizza oven. We l<strong style="border:0px solid rgb(238, 239, 242);font-weight:600;color:inherit;">ove having pets 🐶 in the office, </strong>so feel free to bring yours along.😁</p>

Principal Developers needed to join a new company working in the Health Tech scene. Due to its expertise, this team is the reason this company is transferring its engineering capabilities from the US straight here to BelfastYour role:Covid has done nothing to stop this engineering team, as they have been ramping up production working on new products, architecting new data layers and re-architecting previous workYou will be a key member of the team, working in 2-week sprints going straight to productionYou will contribute to a team driven environment to develop, enhance and maintain components within a micro-services SaaS architectureYou will be working both on existing and brand-new products, yet to hit the marketYour skill set:Full-Stack experience with a strong focus on Java and Angular/ReactPrevious experience as a Full-Stack dev with outstanding communication skills, with the ambition to be part of a team who are growing exponentiallyAbility to ensure software meets standard requirementsAbility to mentor younger team membersWhy join?Proper engineering with a future focused companyChance to become Salesforce AND AWS certifiedWork with one of NI's most prolific tech leadersBetter than market salaries*This company is always keen to hear from amazing developers, whether you are 80% Java and 20% JavaScript or the opposite, you will get the chance to use a wide variety of tech* Next Steps:Please submit your application or speak to a specialist consultant from the Abacus team on 0044 (0) 28 9031 3157 for a confidential discussion. We aim to respond to all inquiries within 4 business hours.The team at Abacus manages a range of permanent and contract positions throughout Northern Ireland, the UK and the Republic of Ireland. If you are professionally qualified we can support your job search.Terms and Conditions and Privacy Policy on www.abacus.careers

Backend Developer / Senior Backend Developer Liverpool (Hybrid, 2–3 days onsite) Join a high-performing engineering team that has transformed how this company builds software. Two years ago, they brought development in-house. Since then, they’ve delivered faster, cleaner, and smarter systems that have reshaped the business. They’re now growing again and hiring for both mid-level and senior backend developers. You’ll work on large-scale, event-driven systems built on .NET 8, Azure, and microservices architecture. You’ll have the chance to own projects, solve complex challenges, and make a visible impact. In this role, you’ll: Develop and maintain scalable backend systems using .NET 8, .NET Core, and C# Design and implement Azure microservices for fast, reliable systems Build reusable internal libraries to improve development speed and consistency Work with large datasets using Cosmos DB, MongoDB, MySQL, and SQL Server You’ll enjoy: Salary up to £75,000 depending on experience Annual bonus and enhanced leave Hybrid setup, 2–3 days in the Liverpool office Paid maternity and paternity leave Unlimited access to mental health professionals This is your chance to join a forward-looking team where your work shapes real products. You’ll be trusted to own delivery, make decisions, and see your ideas come to life. Apply now and show us what you’d bring to the team.

Senior Ruby on Rails Engineer Fulham (2/3 days on-site) £60,000 - £80,000 + Private Healthcare & Benefits This is an excellent opportunity for a Mid-to-Senior Ruby on Rails Engineer to join a start-up in a role where you will play a major part in future developments. This company is a Series A startup, breaking down barriers and making the world more accessible for everyone. Originally founded within the UK transport sector, they have developed award-winning, innovative solutions that prioritise dignity, safety, and inclusion for millions of users. In this varied role, you will move beyond feature development to focus on the stability, performance, and observability of the core Rails ecosystem. You will act as a trusted backend partner for Product and Platform teams, stabilising third-party integrations, improving background job efficiency, and utilising architectural documentation like C4 models to ensure long-term scalability. The ideal candidate will be a seasoned Ruby on Rails developer with deep expertise in PostgreSQL and background processing via Sidekiq and Redis. You should be highly proficient in building RESTful APIs, managing JSON serialisation, and implementing secure authentication methods like JWT or SSO. Beyond coding, you will possess knowledge of Docker and AWS, alongside the communication skills required to translate complex technical risks into clear operational priorities. This is a fantastic opportunity to join a purpose-led business during a period of international scaling. You will have the autonomy to own multiple backend systems, reduce operational risk across global integrations, and play a pivotal role in shaping the architectural future of a platform recognised for its excellence in accessibility and safety. The Role: Lead the evolution of core Ruby on Rails operational platforms. Optimise PostgreSQL performance and Sidekiq background job efficiency. Manage secure third-party integrations and RESTful API design. Partner with Platform teams on AWS and CI/CD reliability. The Person: Deep experience with Ruby on Rails and OOP. Expert in PostgreSQL tuning and complex query optimisation. Proficient with Docker, AWS, and containerised deployment workflows. Strong communicator, capable of leading production incident responses. Reference Number: BBBH271314 Rise Technical Recruitment Ltd acts an employment agency for permanent roles and an employment business for temporary roles. The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set and will be decided by our client, the employer. Rise are not responsible or liable for any hiring decisions made by the end client. We are an equal opportunities company and welcome applications from all suitable candidates.

Senior Backend Developer Utrecht Full-time Reports to CTO 10+ years experience About the RoleWe are seeking a Senior Backend Developer with a minimum of 10 years of professional experience building and scaling backend systems. This role requires strong communication skills and technical depth in backend architecture, performance-driven engineering, and secure, maintainable code practices. The ideal candidate will be comfortable working in a test-driven, AI-assisted development environment and will play a key role in shaping the reliability and scalability of our backend systems.Key ResponsibilitiesArchitect and design scalable backend systems and services with a focus on performance, maintainability, and securityLeverage AI-driven development tools (Claude Code, Codex, Gemini CLI, or similar) to accelerate development, improve code quality, and enhance team productivityCollaborate with product managers, frontend developers, and other stakeholders to deliver business-critical featuresTranslate business requirements to AI agent ready technical specificationsReview PR's from peer developers and AI agentsDrive development practices that emphasize test-driven development (TDD) and high-quality, automated test coverageBuild, optimize, and maintain relational, key-value and time-series databases ensuring efficient queries, schema design, and scalabilityApply security best practices across the stack, ensuring robust protection against vulnerabilities and compliance with standardsMonitor and improve system performance (latency, throughput, scalability, resource efficiency)Mentor and support other developers, fostering a culture of excellence, learning, and innovationRequired QualificationsExperience10+ years of professional backend developmentProven expertise in backend architecture and system designExperience in performance tuning and high-throughput, low-latency system designTechnical SkillsStrong proficiency in Golang; Rust is a plusSolid background in database schema design and optimizationKnowledge of distributed systems and high data throughputAI & Modern PracticesFamiliarity with AI-assisted development toolsDemonstrated experience with TDD and CI/CD pipelinesDeep knowledge of security best practices (OWASP, secure coding)InfrastructureHands-on experience with cloud-native environmentsKubernetes, containers, service meshesSoft SkillsCommunication - Excellent skills in English (Dutch is a strong plus)Collaboration - Work effectively with product managers and other stakeholdersMentorship - Support and guide other developers, fostering excellenceOwnership - Take responsibility for reliability and scalabilityProblem-solving - Translate complex business requirements into solutions

AAAFormularz aplikacyjnyJava Developer (Spring;5+)Nexio Management Sp. z o.o.Niezależnie i odrębnie od wskazanego powyżej pracodawcy eRecruiter i Grupa Pracuj odpowiadają za przetwarzanie Twoich danych podanych w formularzu aplikacyjnym.My, eRecruitment Solutions sp. z o.o. (eRecruiter) i Grupa Pracuj SA (Pracuj.pl) także odpowiadamy za przetwarzanie Twoich danych, kiedy wypełniasz formularz aplikacyjny. Jesteśmy współadministratorami Twoich danych w celu analizy czy zachęcić Cię do założenia Konta Kandydata, a jeśli założysz Konto Kandydata, także w dodatkowych celach opisanych szczegółowo w naszej Polityce Prywatności. Możesz od nas żądać dostępu do Twoich danych, ich sprostowania, usunięcia, ograniczenia przetwarzania, przeniesienia do innego administratora, jak również masz prawo wnieść sprzeciw lub złożyć skargę do Prezesa Urzędu Ochrony Danych Osobowych.Jeżeli masz jakiekolwiek pytania lub żądania, skontaktuj się z nami pod adresem: kandydat@erecruiter.pl lub z naszym inspektorem ochrony danych: iod@pracuj.pl. Więcej informacji znajdziesz w Polityce Prywatności.

Unternehmensbeschreibung Wir sind als eine der führenden europäischen Management- und Technologieberatungen ein echter Tech-Player. Wir sehen uns als Vordenker*innen, handeln und denken strategisch, entwickeln mit unseren Kunden maßgeschneiderte Lösungen, sowie präzise Prozesse und implementieren innovative Technologien. Weltweit sind wir über 50.000 tech-affine und kluge Köpfe – gemeinsam gestalten wir die Zukunft unserer Kunden und die der Gesellschaft. Bist du bereit, das digitale Europa mitzugestalten? Stellenbeschreibung Entwicklung robuster Backend-Komponenten für datenintensive KI-Anwendungen – von der API-Architektur bis zur Modellintegration Gestaltung und Optimierung von Graphdatenbank-Lösungen (z. B. Neo4j) für komplexe Datenbeziehungen und performante Abfragen RESTful APIs konzipieren, versionieren und betreiben – als stabile Brücke zwischen Frontend, Datenquellen und KI-Services KI in die Anwendung bringen: Modelle integrieren, Inferenz-Pipelines sowie schlanke Daten- und Analyse-Workflows aufbauen Unser KI-Portfolio weiterdenken – Ideen einbringen, Prototypen bauen und gemeinsam in die Delivery überführen Beratung heißt Flexibilität: Dein Projekteinsatz richtet sich nach unseren Kunden und deiner Projektsituation – du arbeitest deutschlandweit in unseren Offices, beim Kunden vor Ort und von zu Hause Qualifikationen Abgeschlossenes Studium der (Wirtschafts-)Informatik, (Wirtschafts-)Mathematik, (Wirtschafts-)Ingenieurwesen oder eines vergleichbaren Studiengangs Erfahrung in der Backend-Entwicklung mit Python; Kenntnisse in Ruby sind ein Plus Fundierte Kenntnisse im Umgang mit Graphdatenbanken, idealerweise Neo4j Gutes Verständnis von Natural Language Processing (NLP) und der Integration von KI-Modellen in datengetriebene Systeme Strukturierte, verantwortungsbewusste und lösungsorientierte Arbeitsweise sowie Teamgeist und Kommunikationsstärke Neugier und Lernbereitschaft für deine fachliche und persönliche Weiterentwicklung Gute Deutschkenntnisse (ab C1-Niveau) sowie Englischkenntnisse Zusätzliche Informationen Weiterbildung: umfangreiche fachliche und methodische Trainings inkl. Zertifizierungen sowie vielfältige Entwicklungsperspektiven innerhalb des Unternehmens Work-Life-Balance: hybrides Arbeiten innerhalb von Deutschland und für einen begrenzten Zeitraum in definierten EU-Ländern, Familienservice, Firmenfitness sowie die Möglichkeit zu einem Sabbatical Flexible Urlaubsgestaltung: 30 Tage Urlaub und die Möglichkeit zur individuellen Erhöhung oder Verringerung des jährlichen Urlaubs um bis zu 5 Tage SpenditCard: Monatlich stehen dir zusätzlich zum Gehalt 50 Euro steuerfreies Guthaben zur Verfügung, die du flexibel für Shops in deiner Nähe nutzen kannst IT-Equipment: Wir unterstützen dich bei der Ausstattung von benötigtem Zusatz-Equipment für ein optimales ortsflexibles Arbeiten Mobilität: Firmenwagen und Dienstfahrrad per Gehaltsumwandlung sowie Bezuschussung des Deutschlandtickets Unser Mindset: Teamspirit, offene Türen, Duzkultur, gelebte Vielfalt Vielfalt ist eine wichtige Grundlage unserer Unternehmenskultur. Wir möchten ein inklusives Umfeld schaffen, das die Diversität all unserer 2.600 Mitarbeitenden in Deutschland und Österreich berücksichtigt und in dem du dich bestmöglich entfalten kannst. Denn wir bei Sopra Steria sind davon überzeugt, dass deine Individualität der Schlüssel zu einem nachhaltigen Unternehmenserfolg ist. Wir setzen uns für eine nachhaltige Zukunft ein: Ob mit konzernweiten Stipendien- und Corporate Volunteering-Programmen oder mit Projekten zur Förderung von Bildung, Chancengleichheit und digitale Inklusion – wir übernehmen Verantwortung für die Gesellschaft. Wir glauben fest daran, dass digitale Innovationen ein Schlüssel zu Gleichberechtigung, Inklusion und Klimaschutz sind. Impressum

Senior Backend Developer (TS + Node.js) OPEN 136 - 170 PLN/hour + VAT (B2B) 16 600 - 20 880 PLN gross (UoP) full time Gdańsk or hybrid model TypeScript Node.js NestJS AWS join our bright team about us At Bright Inventions (now Framna) we partner with ambitious brands to create digital products that make a meaningful impact. We work across the full product journey, from strategy and UX to engineering and long-term growth, combining technical expertise with a strong product mindset. Together with our partners, we build solutions that users rely on every day. Our culture is built on trust, ownership, and fearless collaboration. We challenge ideas, support each other, and keep learning-openly sharing feedback, staying flexible in how we work, and approaching each other with empathy. Because the best products are created by teams that move forward together. about project A next-generation passwordless authentication platform used by millions worldwide. It uses advanced biometrics to secure digital identities and enable one-touch access. The solution supports document and biometric verification, data processing, and configurable verification criteria. Please note that we follow a hybrid model with a requirement for regular in-office syncs to foster team collaboration. preferred skills and qualifications 👉 at least 5 years of commercial programming experience as a backend developer or fullstack developer with backend focus 👉 solid understanding of TypeScript/JavaScript 👉 deep experience with Node.js (NestJS) 👉 familiarity with AWS or other cloud providers 👉 hands-on experience with AI tools for coding, testing, and documentation, and supporting teammates with common technical challenges 👉 strong knowledge of databases (SQL and NoSQL) 👉 solid understanding of HTTP protocol, REST APIs, and web communication patterns 👉 we appreciate experience with React, HTML, and CSS in occasional frontend work 👉 experience with backend testing frameworks and testing strategies 👉 very good command of English and Polish (written and spoken) what you’ll find at Bright Inventions (now Framna) ✔️ real impact on the implemented solutions and project growth ✔️ business value over technical perfection ✔️ continuous feedback and open communication ✔️ mentoring program and 1:1 meetings ✔️ internal workshops and dev's meetings ✔️ flexible working hours (we start between 7.00 -10.00 a.m.) and remote work possibility ✔️ office in Gdańsk Wrzeszcz (hybrid model with regular in-office syncs – preference for local candidates) ✔️ good equipment: MacBook and testing devices  ✔️ individual training budget and office library ✔️ free English classes in small groups ✔️ MultiSport and private medical package (Compensa) ✔️ team buildings events we’re building a team where every member ✅ Takes initiative and full ownership in collaboration with both teammates and clients. ✅ Proactively spots opportunities for improvement and suggests solutions. ✅ Is adaptable and open to stepping outside of their core expertise, whether it's learning new technologies, adjusting to changing project needs, or taking on responsibilities beyond their usual role. ✅ Values teamwork, communicates openly, and shares constructive feedback ✅ Faces challenges with a positive, solution-focused attitude. ✅ Treats client products like their own, acting as a true business partner, not just a developer.

About Us:At Read AI we are a fast-growing, venture-backed startup focused on harnessing the power of AI to improve the way people interact with information. Our product helps users by summarizing, augmenting, and aggregating meeting, chat, and email data, saving valuable time. With over a million active users each month, we are continuously expanding and looking for individuals who share our passion for innovation and impact.We are committed to fostering a diverse and inclusive work environment where all voices are valued. We encourage individuals from all backgrounds, abilities, and experiences to apply.The Role:As a Senior Software Engineer on the Enterprise Applications team at Read AI, you will play a key role in developing and maintaining the backend services that power our enterprise product offerings. You will collaborate with cross-functional teams to design, develop, and deploy scalable and reliable backend solutions that meet the unique needs of our enterprise customers.Responsibilities:Collaborate with cross-functional teams to design and develop scalable and reliable backend services and APIs that support our enterprise customers.Take ownership of critical enterprise components of our system, from conception to deployment and maintenance.Build features and functionality to streamline the management and monitoring of our platform by enterprise IT administratorsPractice quality assurance best practices including unit and integration testing.Implement robust authentication and authorization mechanisms to ensure data security and privacy.Optimize data processing pipelines and storage solutions to support enterprise-level data volumes and requirements.Integrate third-party services and data sources seamlessly into our platform.Monitor, troubleshoot, and resolve issues related to infrastructure and operations to ensure maximum uptime and reliability for our enterprise customers.Continuously evaluate and implement best practices, tools, and technologies to enhance the scalability, reliability, and maintainability of our systems.Requirements:Bachelor's degree or higher in Computer Science/Engineering, or 5+ years of relevant industry experience.Proven experience in backend development, with proficiency in one or more programming languages such as Python, Java, or Go.Strong understanding of distributed systems, microservices architecture, and cloud computing platforms (e.g., AWS, GCP).Experience with authentication/authorization protocols and mechanisms (e.g., OAuth, JWT).Experience with data encryption at rest and in transit, including knowledge of encryption algorithms and security best practices.Familiarity with relational and non-relational databases, along with expertise in data modeling and database management.Excellent problem-solving skills with a pragmatic and results-driven approach.Ability to thrive in a fast-paced startup environment with a high degree of autonomy and accountability.Excellent communication and collaboration skills, with the ability to work effectively in cross-functional teams.Nice to Have:Experience with containerization and orchestration tools such as Docker and Kubernetes.Experience with Python, Pydantic, FastAPI, and SQLAlchemy.Experience with multi-region cloud computing deployments.Experience with regulatory frameworks that govern data handling such as GDPR and HIPAA.Familiarity with CI/CD pipelines and DevOps practices.Prior experience in a startup or fast-growing environment.Why Read AI?Innovative:  We bring AI to the masses with proactive technology that acts as the ultimate AI assistant. Built on our proprietary, patented technology, Read AI takes notes, surfaces information, facilitates collaboration, and learns you, making individuals and teams more effective.  Massive Impact:  AI's greatest impact will be on the ability to allow people to do more, taking away mundane tasks, and guiding them to the next best action.  Growth Opportunities:  Read AI is the fastest growing AI-copilot and meeting notetaker in history, and is one of the leading AI companies in the world, adding more than 1MM new customers every month. The company raised Series A and B in 2024, also was recognized as a Top Startup in Seattle by LinkedIn (2025), also notably a Top Company To Watch in 2025 by Inc Magazine, and is one of the Top AI Companies in Demand by Startups, according to a16z. Leadership: Learn more about CEO and Co-Founder David Shim in this Fortune Good Life profile and listen to him share his vision for AI Agents, Digital Twins and the Future of Work. CTO and Co-Founder Rob Williams was recently anointed as one of the most disruptive leaders in AI. For more on our technology, Co-Founder and VP Data Science Elliott Waldron goes behind-the-scenes on our patents and models in this tech brief. Collaborative Culture: Work in a supportive and collaborative environment with a diverse and talented team.Software Engineer positions offer a base pay range of $190,000 - $210,000, plus equity and benefits. Please note that the base pay shown is a guideline, and individual total compensation will vary based on factors such as qualifications, skill level, competencies, and work location. We also offer low deductible health plans, as well as flexible time away and family leave programs.Please note our company does not provide visa support or sponsorship for employees.

Python Backend Developer About the Project We are building a cutting-edge platform that transforms the consulting business by digitizing workflows, minimizing manual effort, improving success rates, and enabling data-driven collaboration. Our mission is to reshape the future of external workforce collaboration — and we invite you to join us in achieving this bold goal. Your Role We’re looking for a skilled Backend Developer (Python + Neo4j) to strengthen our team. If you’re passionate about high-performance systems, backend optimization, and scalable architecture, this role is for you. Key Responsibilities Design, develop, and maintain backend systems and APIs using Python (proprietary framework on top of FastAPI). Build and manage graph databases using Neo4j. Collaborate with frontend developers to ensure seamless integration. Focus on performance, scalability, and system efficiency. Maintain high code quality with type safety, security, and best practices. Troubleshoot and resolve backend issues to boost overall performance. Required Skills & Qualifications Proven experience in backend development with Python and OOP. Hands-on experience with Neo4j (or other graph databases). Experience with Redis or similar NoSQL solutions. Familiarity with Pandas, Numpy, and Pydantic modeling. Strong knowledge of performance optimization techniques. Experience with RESTful APIs, microservices, backend architecture. Knowledge of cloud platforms (AWS / GCP) is a plus. Strong communication and problem-solving skills. What We Offer ✅ Competitive salary & benefits✅ Flexible work environment✅ Work with cutting-edge technologies✅ Growth opportunities in an international team✅ A chance to make an impact by optimizing and scaling innovative systems 📩 If this sounds like your next career move, we’d love to hear from you!

Kogo poszukujemy? Skills: Strong technical skills specifically in cloud- based technology (AWS serverless or other public cloud is essential) and Java DevOps experience, especially with Terraform would be a big plus Quality driven with ability to write tests on any level with BDD & TDD approach Understanding microservices architecture Understanding of front-end technologies including Java Script, Android and iOS is a plus Comfortable working agile environment in a small cross functional team using XP practices What's in it for you? Prestigious position at one of the world's largest banks B2B contract Hybrid work (6 days per month from the office in Cracow) and flexible working hours Working with cutting-edge IT technologies Personal growth and development opportunities Private healthcare coverage and multisport card Referral program and company events Recruitment process: two meetings with hiring managers, followed by a phone screening with our recruiter Hybrid work: 6 days per month from the office in Cracow Czym będziesz się zajmować? Do you want to work for one of the world’s largest global banks? Want to be part its exciting digital transformation? Do you want to engineer incredible products for millions of customers? Well, our Client offers just that ☺︎ About the project: This role is part of the Third-Party Services team, which partners with top global vendors to bring innovative digital products to the bank and its 40+ million customers. One of our key solutions is a global digital identity verification and authentication service that allows any market to confirm a person’s identity via API integration. The product enables users to capture a government-issued ID (passport, driver’s license, or national ID) and verifies its authenticity in real time. It also performs a fully digital anti-impersonation check to ensure secure and seamless onboarding. What will you do: Defining, building and testing technical solutions in an agile environment. The platform is primary using Java & JavaScript (React.js) hosted on public cloud Writing infrastructure terraform/cloud formation and CI/CD pipelines in groovy Writing unit tests in Spock, e2e tests in Cucumber, contract-based tests in PACT Defining architecture and solutions including R&D on cloud and 3rd party vendors’ services Jakie otrzymasz benefity?

<p><strong>Senior .NET Developer</strong></p> <p> </p> <p>Pearson Carter are currently working with a professional organisation who are expanding their development team due to an increase of internal projects</p> <p> </p> <p>They offer a base salary of £55,000 &#8211; £66,000</p> <p> </p> <p>Get in touch if you are looking for your next opportunity!</p> <p> </p> <p><strong>Responsibilities:</strong></p> <ul> <li>Design and develop applications in .NET</li> <li>CI/CD activity including building pipelines and working closely with deployment process</li> <li>Support and mentor junior devs</li> </ul> <p> </p> <p><strong>Experience:</strong></p> <ul> <li>C#.NET</li> <li>.NET Core</li> <li>Azure DevOps, Ci/CD pipelines</li> <li>Deployment experience</li> <li>Working to a Agile Methodology</li> </ul> <p> </p> <p><strong>Salary</strong></p> <p>They offer an excellent salary: £55,000 &#8211; £66,000</p> <p> </p> <p><strong>Location</strong></p> <p>This client has an office in Sheffield however they’re offering 3 days from home per week.</p> <p> </p> <p>Applications are welcome from professionals with Development experience.</p> <p> </p> <p><strong>How to Apply</strong></p> <p>Please apply asap with your CV to be considered for this position. You can also get in touch with me on matthew@pearsoncarter.com or 0191 406 6111.</p> <p> </p> <p>Pearson Carter is the Global Leader in IT Recruitment with specialist roles across the globe &#8211; <a href="https://www.pearsoncarter.com/">www.pearsoncarter.com</a></p>

Backend-Entwickler*in (Senior) Projektangebot für Freelancer Position: Software-Entwicklung / Programmierung Projekttyp: Freiberufliche Position (Freelancer)   Projektbeschreibung Die Unterstützungsleistungen werden zur Wahrung und Sicherstellung des Linienbetriebes von SAP S/4HANA als auch dem weiteren Wissensaufbau bei der Pflege und Wartung von SAP S/4HANA benötigt. Vorhandene SAP-Landschaft: • SAP ERP-ECC 6.08 (3-stufig - Test, Qualitätssicherung, Produktion), SAPNetweaver 7.5.0 SP30 • SAP Business Warehouse (3-stufig), SAP-Netweaver 7.51 • SAP-Portal (3-stufig), SAP-Netweaver 7.5.1 • SAP-PI (2-stufig), SAP-Netweaver 7.5.0 SP29 • SAP S/4HANA (4-stufig) • SAP Solution Manager (3-stufig), SAP-Netweaver 7.5.1 Zielkonditionen: Onsite Berlin: 80,00 €/h Remote (90%): 72,00 €/h Anforderungen -> Leistung remote muß innerhalb Deutschem Bundesgebiet aus erfolgen! SAP S/4HANA, insbesondere in den Modulen FI, CO, und PSM (Level 2) ABAP-Programmierung (Level 3) User Exits und BAdIs (Level 3) Erstellung und Nutzung von Webdiensten (SOAP und REST-APIs) (Level 3) SAP-Integrationstechniken IDoc-Verarbeitung, ALE und RFC´s (Level 3) Workflow-Entwicklung (Level 2) SAP HANA (In-Memory-Datenbank) (Level 2) Anwendung von Testframeworks zur Erstellung von Unit-Test (Level 2) Anwendung und Nutzung des SAP SolutionManager (Level 1) Bei Interesse wird eine Excel Einschätzung und CV benötigt, diese senden wir Ihnen gerne kurzfristig zu. Level 1=Grundlagenwissen 2=Gute Kenntnisse 3=Expertenwissen Sprache: Deutsch fließend ABAP ++++ (excellent), > 4 yrs. BADI ++++ (excellent), > 4 yrs. IDOC ++++ (excellent), > 4 yrs. REST ++++ (excellent), > 4 yrs. User Exits ++++ (excellent), > 4 yrs. Workflowentwicklung +++ (good), 2-4 yrs. UnitTest (Python Framework) +++ (good), 2-4 yrs. SAP ALE (ALE-Verteilung) ++++ (excellent), > 4 yrs. SAP RFC (Remote Function Call) ++++ (excellent), > 4 yrs. SAP S/4 HANA +++ (good), 2-4 yrs. SAP CO (Controlling) +++ (good), 2-4 yrs. SAP FI (Financial Accounting) +++ (good), 2-4 yrs. SAP HANA +++ (good), 2-4 yrs. SAP PSM (Public Sector Management) +++ (good), 2-4 yrs. SAP Solution Manager (SolMan) ++ (trained), 0-2 yrs. SOAP ++++ (excellent), >4 yrs.

We are partnering with a high-growth technology start-up, that is redefining the rules of music production. Backed by a top-tier European VC and several iconic Silicon Valley tech pioneers, they have reached significant scale—surpassing 1 million user-generated assets within months of their initial launch.As a core member of the founding engineering team, you will be responsible for maturing and leading the core platform as it scales from its successful pilot phase to millions of global users.🚩More about you:We are looking for a brilliant, passionate engineer—likely with around 4-6 years of hands-on experience—who is ready to step out of a siloed role and into a position of true ownership.You’ve mastered the basics; now it’s time to apply them at a scale most engineers only see at much larger firms.📈Your Impact &amp; Growth PathOwn the Migration: You’ll lead our transition from a pilot database to a high-performance relational schema. This is a rare chance to own a migration end-to-end—a "gold star" project for any engineer's career.Master Complex Systems: You will solve the high-stakes problems of global commerce, building a "bulletproof" payments and subscription engine that manages revenue for millions of users.Creative Engineering: You’ll tackle the hard (but fun &amp; interesting) stuff. Your code will be the reason a creator halfway across the world can make music in real-time.Build the Culture: As a founding team member, you’ll help set the standards. From CI/CD workflows to observability, you are helping build the "how we work" playbook from the ground up.⚙️Technical Skillset:Node.js/TypeScript ecosystemSolid Database Experience, leading their upcoming database migrationSystems Engineer: You have a natural instinct for identifying failure modes and optimizing performanceFounding Mindset: You thrive in a "ship-fast" environment. You value high autonomy and the opportunity to work in a high-intensity, in-person collaborative studio.📌The SetupLocation: Central London (Fully on-site).Package: Significant founding-team equity Competitive salary.Culture: A low-ego, talent-dense team building a product with massive global engagement.Benefits: Premium health coverage, gym membership, and on-site meal options.If this sounds like an interesting challenge - apply and let's talk 😊

Job Description US Work Authorization Requirement: Candidates must be legally authorized to work in the United States without employer sponsorship. This includes, but is not limited to, U.S. Citizens, Permanent Residents, and other individuals with valid U.S. work authorization. Job Description:  We are seeking a highly experienced Python Developer with 12+ years of overall IT experience, including 5+ years of deep, hands-on Python development, to design and build scalable, high-performance RESTful APIs. This role focuses on backend API development using Flask or FastAPI and strong application design principles. The ideal candidate is a solid problem-solver with a strong foundation in object-oriented programming, experience building production-grade APIs, and the ability to work collaboratively in a fast-paced environment. While cloud exposure is limited in this project, familiarity with AWS and modern DevOps practices is a plus. Key Responsibilities Design, develop, and maintain RESTful APIs using Python and Flask or FastAPI Apply strong object-oriented design principles to build clean, reusable, and maintainable code Develop backend services that are scalable, secure, and high-performing Collaborate with product owners, architects, and frontend teams to deliver end-to-end solutions Write efficient, well-tested, and production-ready Python code Implement unit and integration tests to ensure code quality and reliability Debug, troubleshoot, and resolve complex technical issues Participate in code reviews and contribute to best practices Maintain technical documentation and support ongoing enhancements Required Qualifications & Experience Must Have 12+ years of overall IT experience 5+ years of strong, hands-on experience in Python development Proven experience building REST APIs using Flask or FastAPI Strong understanding of object-oriented programming (OOP) concepts Experience developing production-grade backend services Solid debugging and problem-solving skills Strong communication and collaboration abilities Preferred / Nice to Have Experience with Python libraries such as Pandas and NumPy Exposure to FinTech or financial domain projects Familiarity with AWS cloud services Experience with containers (Docker, Kubernetes) Experience with testing frameworks (Pytest, Unittest, Behave) Apply Online Your Name * Your Phone Number * Your Email Address * Job id What is your current U.S. visa or immigration status? * SelectU.S. Citizen (USC)Lawful Permanent Resident (Green Card holder)H1BF1-OPT/Stem-OPT/CPT EADH4-EADL-2SGC-EADOther Valid Visa Where are you currently located at? * W2 or C2C * SelectW2C2C How many years of total experience do you have? * How many years of relevant experience do you have? * Do you require H1B sponsorship? * YesNo Do you require sponsorship? * NoYes – H-1B transferYes – Green Card sponsorshipYes – Both H-1B transfer and Green Card sponsorship Upload Resume * Δ US Work Authorization Requirement: Candidates must be legally authorized to work in the United States without employer sponsorship. This includes, but is not limited to, U.S. Citizens, Permanent Residents, and other individuals with valid U.S. work authorization. Job Description:  We are seeking a highly experienced Python Developer with 12+ years of overall IT experience, including 5+ years of deep, hands-on Python development, to design and build scalable, high-performance RESTful APIs. This role focuses on backend API development using Flask or FastAPI and strong application design principles. The ideal candidate is a solid problem-solver with a strong foundation in object-oriented programming, experience building production-grade APIs, and the ability to work collaboratively in a fast-paced environment. While cloud exposure is limited in this project, familiarity with AWS and modern DevOps practices is a plus. Key Responsibilities Design, develop, and maintain RESTful APIs using Python and Flask or FastAPI Apply strong object-oriented design principles to build clean, reusable, and maintainable code Develop backend services that are scalable, secure, and high-performing Collaborate with product owners, architects, and frontend teams to deliver end-to-end solutions Write efficient, well-tested, and production-ready Python code Implement unit and integration tests to ensure code quality and reliability Debug, troubleshoot, and resolve complex technical issues Participate in code reviews and contribute to best practices Maintain technical documentation and support ongoing enhancements Required Qualifications & Experience Must Have 12+ years of overall IT experience 5+ years of strong, hands-on experience in Python development Proven experience building REST APIs using Flask or FastAPI Strong understanding of object-oriented programming (OOP) concepts Experience developing production-grade backend services Solid debugging and problem-solving skills Strong communication and collaboration abilities Preferred / Nice to Have Experience with Python libraries such as Pandas and NumPy Exposure to FinTech or financial domain projects Familiarity with AWS cloud services Experience with containers (Docker, Kubernetes) Experience with testing frameworks (Pytest, Unittest, Behave) [contact-form-7 id="ac31dcc" title="Job Apply Form"]

Du willst nicht nur Code schreiben, sondern an einem Spiel mit Geschichte und Zukunft mitwirken? Bei uns hast Du die Chance, Die Siedler Online auf das nächste Level zu bringen, Neues auszuprobieren und einen echten Unterschied zu machen. Bist Du bereit dafür? Dann bewirb Dich jetzt an unserem Sitz in Regensburg! Softwareentwickler/-in Backend Bei uns kannst Du: - das Kult-Spiel Die Siedler Online weiterentwickeln und dabei sein, wie wir damit zu neuen Ufern aufbrechen - Tools und Testumgebungen entwickeln, betreuen und verbessern und damit die Grundlage für effiziente Entwicklungsprozesse schaffen - Deine Kenntnisse in verschiedensten Programmiersprachen und Technologien erweitern und von unserem umfangreichen Weiterbildungsangebot profitieren - komplexe Designs und Architekturen entwerfen, um das Game reich an Features und gleichzeitig performant und funktional zu halten Wir stellen uns vor, dass Du: - bereits mehrere Jahre Erfahrung in der Softwareentwicklung gesammelt hast und Dich mit C++ und C# richtig wohl fühlst - Spaß daran hast, saubere Architekturen zu bauen – von Client-Server-Strukturen über Netzwerkprogrammierung bis hin zu gutem Software-Design, Algorithmen und Datenstrukturen - gerne neue Technologien, Sprachen und Tools ausprobierst und mit MySQL, PostgreSQL, Git, Bitbucket und Jenkins Deine Ideen in smarte Lösungen verwandelst - analytisch denkst, Zusammenhänge schnell erkennst und mit Begeisterung an komplexen Herausforderungen tüftelst Hier klicken, um unsere Cookies zu akzeptieren und diesen Inhalt anzuzeigen. Einblick in den Arbeitsalltag Du möchtest gerne wissen, wie die Kollegen bei CipSoft so sind und wie in etwa der Arbeitsalltag im Bereich Programmierung bei uns aussieht? Kein Problem! Wir haben für Dich ein Video erstellt, damit Du einen Blick hinter die Kulissen werfen kannst und bereits im Vorfeld die Möglichkeit hast, unsere Arbeitswelt besser kennenzulernen.

Działamy od 2021 roku i jesteśmy częścią Żabki Future, jednostki biznesowej z Grupy Żabka. Specjalizujemy się w tworzeniu aplikacji mobilnych oraz transformacji branży e-commerce w Polsce. Powstaliśmy, aby odpowiadać za innowacje technologiczne, które zwiększają wartość Grupy i poziom korzystania z usług przez jej konsumentów i konsumentki. 🚀 Stworzyliśmy aplikację Żabka Jush, dostępną w wersji na iOS oraz Android, umożliwiającą dostawę Twoich ulubionych produktów pod same drzwi. Możesz zamówić swoje zakupy na Jush! i otrzymać je nawet w 15 minut lub w supermarkecie delio, który pozwoli Ci na dopasowanie godziny dostawy do Twoich potrzeb, a gdy nabierzesz ochoty na coś wyjątkowego, swoje zakupy możesz uzupełnić starannie wyselekcjonowanymi alkoholami z Alcostore. W Lite e-Commerce tworzymy najnowocześniejsze rozwiązania, które ułatwią Ci życie. Aktualnie poszukujemy osoby na stanowisko Junior Backend Developer (he/she/they), która dołączy do bohaterek i bohaterów Lite w misji rozwoju technologicznego świata! 🦸💙 🎯 Będziesz odpowiadać za: tworzenie i utrzymywanie rozwiązań backendowych dla platformy e-Commerce;współpracę z zespołem nad wspólną platformą dla Żabka Jush, Delio i Alcostore;optymalizacja i automatyzację procesów, dążąc do zwiększenia efektywności i jakości ✅ Zaaplikuj do nas, jeśli: masz pierwsze doświadczenia w pracy komercyjnej (ok. 3–6 miesięcy) przy tworzeniu aplikacji backendowych;pracujesz z Node.js i dobrze znasz TypeScript;masz doświadczenie z PostgreSQL oraz Redis;chętnie się rozwijasz i jesteś otwarty/a na naukę nowych narzędzi i technologii;zależy Ci na zrozumieniu kontekstu biznesowego, chcesz wiedzieć nie tylko jak, ale i dlaczego budujesz dane rozwiązanie;rozumiesz podstawy działania systemów backendowych i potrafisz samodzielnie realizować zadania;szybko się uczysz i chcesz rozwijać swoje umiejętności, zdobywając nowe doświadczenia.znasz język angielski (min. B1/B2). ⭐ Mile widziane: znajomość Dockera i/lub GraphQL;doświadczenie w pracy z architekturą rozproszoną (mikroserwisy, event-driven);korzystanie z narzędzi AI w codziennej pracy; 🎁 Zapewniamy: Wynagrodzenie: 7,000 -9,000 tys. PLN netto + VAT miesięcznie w ramach umowy B2B; możliwa także umowa zlecenie;współpracę w 100% zdalną, ale zawsze możesz nas odwiedzić w biurze w Warszawie;dynamiczne i nowoczesne środowisko;dofinansowanie karty MultiSport, opieki medycznej Lux Med i ubezpieczenia Uniqa;możliwość uczestnictwa w innowacyjnym projekcie i transformacji obszaru handlowego w Polsce;sprzęt i narzędzia niezbędne do pracy. 🙌 A oprócz tego: brak oficjalnego dress code’u 💼🚫nowe, przytulne biuro w samym centrum Warszawy 📍🏢pracę z ekspertami z topowych sieci spożywczych, e-commerce i firm technologicznych 🌐świetną i przyjazną atmosferę 🫂pomocną dłoń w każdej sytuacji 🤝💙 Sprawdź, jak wygląda nasz proces rekrutacyjny: 📩 Przesyłasz nam swoje CV, a my analizujemy dokumenty, które od Ciebie otrzymaliśmy.📲 Jeśli wpiszesz się w nasze wymagania zaprosimy Cię na pierwszą rozmowę rekrutacyjną - rozmowę telefoniczną z naszym Zespołem HR👉 Kolejnym etapem będzie techniczna rozmowa online. Poprowadzą ją członkowie zespołu i potrwa około 60 minut. 🗣️ Na koniec zaprosimy Cię na krótkie spotkanie z Michałem, Chief Technology Officerem.🎉 Jeśli wszystko pójdzie dobrze - witamy na pokładzie Lite e-Commerce! Poznaj nas bliżej! 💙👉 https://linktr.ee/lite_ecommerce

Our client tailors software, IT and data management to their customers' unique needs, fostering strong partnerships built on trust and transparency. Founded by engineers, they've been tackling complex missions for over 15 years while prioritizing "good technology" — solutions that excel in user experience, long-term value, and ethical considerations. They not only invest in technology, they are also committed to investing in your future with competitive compensation and comprehensive benefits (fully-paid medical, 10% 401k match, generous PTO, and flexible work arrangements). Here, you're an invaluable member of the team, making a real impact in a collaborative, supportive environment that truly appreciates your individual spark. Turn your aspirations into reality and experience the difference a great employer can make – it's not just talk with our client, it's excellence in practice. They are seeking a Sr. Java Developer to join their team.  Relevant qualifications: -Bachelor's Degree in Computer Science or similar -7+ years of professional experience -Experience with Java development -Experience in a Linux envrionment -Experience with Spring -Experience with scripting (bash or Python) -Experience with CI/CD tools and IaC tools -Experience with MongoDB or similar -Experience with Docker or similar This role is located in the Annapolis Junction area and offers some telework options. The work requires a TS/SCI + Full-Scope Polygraph.  Apply @ https://careers.stanleyreid.com/, or contact our team for more info: cwells@stanleyreid.com or abuzzettijohnson@stanleyreid.com

Join us as a Backend Engineer in the Chief Technology Office at Barclays where you’ll be developing cutting-edge AI platforms using state-of-the-art technologies. As part of our Chief Technology Office, you’ll work on implementing the latest AI/ML solutions for our bank. In this role, you'll collaborate with talented engineers to design and implement high-performance backend systems that enhance our AI platforms, driving industry best practices while contributing to Barclays' commitment to embracing AI to make Barclays simpler, better, and more balanced.To be successful as a Backend Engineer, you should have experience with:Ample technical skills in backend development using Python.Proven AWS implementation experience.Proficiency with software development lifecycle using, Git, Agile, and automated testing.Demonstrable experience with Docker/Kubernetes containerisation and CI/CD pipelines.Some other highly valued skills may include:Hands-on, curious Engineer with good collaborative skills.Infrastructure as code knowledge (terraform, CloudFormation).Experience developing or integrating AI/ML frameworks, e.g. LangChain.Bachelors in Computer Science, related fields, or equivalent experience.You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen strategic thinking and digital and technology, as well as job-specific technical skills.This role will be based in either our Knutsford or Glasgow office. Purpose of the roleTo design, develop and improve software, utilising various engineering methodologies, that provides business, platform, and technology capabilities for our customers and colleagues. AccountabilitiesDevelopment and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance.Cross-functional collaboration with product managers, designers, and other engineers to define software requirements, devise solution strategies, and ensure seamless integration and alignment with business objectives.Collaboration with peers, participate in code reviews, and promote a culture of code quality and knowledge sharing.Stay informed of industry technology trends and innovations and actively contribute to the organization’s technology communities to foster a culture of technical excellence and growth.Adherence to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions.Implementation of effective unit testing practices to ensure proper code design, readability, and reliability.Assistant Vice President ExpectationsTo advise and influence decision making, contribute to policy development and take responsibility for operational effectiveness. Collaborate closely with other functions/ business divisions.Lead a team performing complex tasks, using well developed professional knowledge and skills to deliver on work that impacts the whole business function. Set objectives and coach employees in pursuit of those objectives, appraisal of performance relative to objectives and determination of reward outcomesIf the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others.OR for an individual contributor, they will lead collaborative assignments and guide team members through structured assignments, identify the need for the inclusion of other areas of specialisation to complete assignments. They will identify new directions for assignments and/ or projects, identifying a combination of cross functional methodologies or practices to meet required outcomes.Consult on complex issues; providing advice to People Leaders to support the resolution of escalated issues.Identify ways to mitigate risk and developing new policies/procedures in support of the control and governance agenda.Take ownership for managing risk and strengthening controls in relation to the work done.Perform work that is closely related to that of other areas, which requires understanding of how areas coordinate and contribute to the achievement of the objectives of the organisation sub-function.Collaborate with other areas of work, for business aligned support areas to keep up to speed with business activity and the business strategy.Engage in complex analysis of data from multiple sources of information, internal and external sources such as procedures and practises (in other areas, teams, companies, etc).to solve problems creatively and effectively.Communicate complex information. 'Complex' information could include sensitive information or information that is difficult to communicate because of its content or its audience.Influence or convince stakeholders to achieve outcomes.All colleagues will be expected to demonstrate the Barclays Values of Respect, Integrity, Service, Excellence and Stewardship – our moral compass, helping us do what we believe is right. They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave.

Formularz aplikacyjny .NET Developer (MID) Nexio Management Sp. z o.o. Formularz aplikacyjny Nexio Management Sp. z o.o. Niezależnie i odrębnie od wskazanego powyżej pracodawcy eRecruiter i Grupa Pracuj odpowiadają za przetwarzanie Twoich danych podanych w formularzu aplikacyjnym. My, eRecruitment Solutions sp. z o.o. (eRecruiter) i Grupa Pracuj SA (Pracuj.pl) także odpowiadamy za przetwarzanie Twoich danych, kiedy wypełniasz formularz aplikacyjny. Jesteśmy współadministratorami Twoich danych w celu analizy czy zachęcić Cię do założenia Konta Kandydata, a jeśli założysz Konto Kandydata, także w dodatkowych celach opisanych szczegółowo w naszej Polityce Prywatności. Możesz od nas żądać dostępu do Twoich danych, ich sprostowania, usunięcia, ograniczenia przetwarzania, przeniesienia do innego administratora, jak również masz prawo wnieść sprzeciw lub złożyć skargę do Prezesa Urzędu Ochrony Danych Osobowych. Jeżeli masz jakiekolwiek pytania lub żądania, skontaktuj się z nami pod adresem: kandydat@erecruiter.pl lub z naszym inspektorem ochrony danych: iod@pracuj.pl. Więcej informacji znajdziesz w Polityce Prywatności.

Ready to lead, disrupt and reinvent the sleep industry? We are Emma – The Sleep Company. Founded in 2015, we’ve become the world’s largest D2C sleep brand, available in over 35 countries with more than 25 stores across Europe. Recommended by leading consumer associations in EMEA, APAC, and the Americas, we develop the best sleep comfort products that empower our customers to awaken their best every day.     At Emma, we are a community of smart, driven people, united by a strong culture of collaboration, teamwork, and knowledge sharing. We think big, take ownership, and are empowered to drive meaningful impact. Through hands-on experience, mentorship, and continuous learning, we drive our own growth and learning. With Emmies from over 60 nationalities and offices across multiple regions, our diverse perspectives enrich our workplace culture. Ready to shape the future of sleep with us? Let’s make it happen! We are seeking a talented and passionate Backend Engineer to join our dynamic team. As a Backend Engineer, you will play a key role in designing, building, and maintaining robust, scalable, and high-performance backend systems. You will work closely with frontend engineers, product managers, and other stakeholders to deliver reliable and efficient solutions that power exceptional user experiences.  What you’ll do Architect, design, and implement Emma’s backend platform, supporting our growth from E-commerce into SleepTech and global fulfillment & logistics.  Design, build, and scale backend services using Go Develop and maintain robust, secure, and high-performance REST APIs that integrate with internal systems and third-party providers.  Work in a services-oriented, API-first architecture, including event-driven systems using AWS services such as SNS, SQS, Kafka, or RabbitMQ.  Build cloud-native solutions running on AWS, with full ownership from development and testing to deployment and monitoring (full DevOps).  Fully own your team’s tech stack: develop, maintain, operate, and continuously improve it.  Ensure high code quality through automated testing, code reviews, and CI/CD pipelines.  Be part of an agile, empowered team: collaborate closely, share knowledge, and contribute to the growth of fellow engineers.  Contribute to improving our CI/CD, DevOps and SRE practices.  Take part in recruitment processes to help grow our high-performing tech team.  Who we’re looking for Proven experience designing and delivering backend services and APIs that meet high software quality standards.  Strong background in Go (Golang).  Solid understanding of computer science fundamentals, including data structures, algorithms, object-oriented programming, distributed systems, and software design patterns.  Experience working with cloud-native architectures, ideally on AWS, and familiarity with Docker and container-based deployments (Kubernetes is a plus).  Experience with databases and messaging systems, such as relational and NoSQL databases, Redis, SNS/SQS, Kafka, or RabbitMQ.  Several years of experience across the software development lifecycle; senior-level candidates should demonstrate clear technical ownership and architectural impact.  Strong appreciation for clean, well-organized, and well-documented codebases.  Experience implementing unit, integration, end-to-end, and load tests.  Familiarity with CI/CD pipelines, and a mindset of operational excellence and ownership.  Self-organized, proactive, and comfortable taking responsibility for driving solutions forward.  Strong analytical skills, open-mindedness, and a collaborative, feedback-driven attitude.  Bachelor’s degree in Computer Science, Software Engineering, or equivalent practical experience.

Kogo poszukujemy? Responsibilities: development of a system responsible for collecting and transmitting market data in real-time, planning technical work and participating in architectural decisions, monitoring application performance and code profiling, optimization for microseconds, identifying and eliminating performance bottlenecks at the code, JVM, and network levels, integration with data providers and creating custom solutions for data retrieval and processing, team support: code review, knowledge sharing, close collaboration with Quant and Trading teams to understand, analyze, and implement trading algorithms. We offer: Attractive salary Sports package Medical package Opportunity to work on interesting projects Czym będziesz się zajmować? Requirements: minimum 5 years of experience in Java programming, very good knowledge of Java language and multithreading concepts, familiarity with Kafka, gRPC, REST, WebSockets, PostgreSQL, Cassandra, Elasticsearch higher education (preferably in computer science or related fields), communication skills and ability to effectively collaborate with a team, fluent in spoken and written Polish, communicative knowledge of English language ability to quickly learn new technologies and willingness to share knowledge with the team, knowledge and practical application of Clean Code principles, ability for analytical thinking and solving complex problems.

Kogo poszukujemy? 5+ years building backend systems at scale with Python or Kotlin. Experience with distributed systems on AWS, Kubernetes and MySQL/PostgreSQL. Proficiency in SQL and data rich environments. Strong system design skills and track record delivering maintainable services. Familiarity with CI/CD and safe production deployments. Experience with observability and incident response; participation in on-call rotations. Strong written and verbal English communication. Czym będziesz się zajmować? Own and deliver quarterly team goals; lead engineers through ambiguity and drive execution. Design and implement backend services and APIs using Python or Kotlin within microservice and event-driven architecture. Build scalable fraud tooling and infrastructure in collaboration with Product, Compliance, Machine Learning and Fraud Ops. Improve system reliability and architecture; maintain high observability standards and participate in on-call rotation. Contribute to technical design, code quality and mentoring; represent team in cross-functional initiatives.

Backend Engineer Salary: Up to £75k (DoE) * Hybrid: 1 day/week in London * No sponsorship offered I'm recruiting on behalf of a fast‑growing accounting‑tech startup that builds automation and AI tools for in‑house finance teams. The company has strong traction and is expanding its engineering team. Role OverviewDevelop and maintain backend services powering automation featuresWork closely with product and leadership in a fast‑paced startup environmentRapidly prototype ideas and help scale them into reliable production systemsOccasionally contribute small frontend updates (React/TypeScript) Tech RequirementsMust have: Java or Kotlin, Spring BootMySQL, OpenSearch, AWSNice to have: Groovy, Ruby on Rails, React/TypeScript Candidate ProfileSeveral years' backend engineering experiencePrior startup experience strongly preferredStrong problem‑solving mindsetComfortable working independently and collaborativelyMust already have the right to work in the UK (no sponsorship) BenefitsShare options25 days holiday + bank holidaysPersonal learning & development budgetHigh‑impact role in a small, scaling team Services advertised by Gold Group are those of an Agency and/or an Employment Business.We will contact you within the next 14 days if you are selected for interview. For a copy of our privacy policy please visit our website.