Senior .NET Consultant

Senior .NET Consultant Senior .NET Consultant

Kraków, PL, 30-302 Poznań, WP, PL, 61-569 Łódź, PL, 90-118 Warszawa, PL, 00-839

Salary range: 125 - 150 PLN/H

You will design, develop and maintain scalable backend services in modern distributed environments using .NET and C#. Working in Agile teams, you will take ownership of end-to-end delivery – from technical analysis and implementation to deployment and operational support. You will collaborate closely with architects, DevOps and QA to ensure high-quality, secure and reliable systems while actively contributing to improving engineering standards, software quality and delivery processes.

• Develop production-ready solutions in distributed and cloud-native architectures

• Plan and execute development tasks independently

• Contribute to technical design and architecture discussions

• Write and maintain technical documentation and design notes

• Perform code reviews and ensure adherence to engineering standards

• Build and maintain automated tests (unit, integration, API)

• Troubleshoot and resolve application and integration issues

• Participate in Agile/Scrum ceremonies

• Support CI/CD pipelines and deployment processes

• Implement monitoring, logging and observability practices

• Work with asynchronous processing and messaging systems

• Share knowledge and support junior engineers

• Min. 5 years of commercial experience with .NET and C#

• Strong knowledge of OOP, SOLID principles and clean code

• Experience with ASP.NET Core

• Practical knowledge of asynchronous and multithreaded programming

• Experience building RESTful APIs and distributed systems

• Knowledge of event-driven architecture and messaging tools (e.g. RabbitMQ, Kafka, Azure Service Bus)

• Experience with dependency injection and backend frameworks

• Experience with CI/CD pipelines and Git-based workflows

• Experience with automated testing frameworks (xUnit, NUnit, FluentAssertions)

• Understanding of testing strategies (unit, integration, contract tests)

• Knowledge of relational databases and Entity Framework Core

• Ability to write efficient SQL queries and debug data issues

• Familiarity with logging and monitoring tools

• Strong problem-solving skills and ability to work independently

• Experience working in Agile/Scrum teams

• Good command of English

• Experience with Azure or AWS

• Knowledge of Docker and Kubernetes

• Experience with microservices architecture

• Basic frontend knowledge (Angular, React, TypeScript)

• Familiarity with gRPC

• Experience in performance optimization and resiliency patterns

• Practical use of AI coding assistants (e.g. Copilot, ChatGPT)

• Knowledge of Spec-Driven Development

• Experience in BFSI domain