Mid/Senior iOS Developer – FinTech

Unleash the Future of FinTech — Elevate Mobile Banking with Your iOS Expertise! Warsaw-based opportunity with hybrid work model (2 days in the office per month). As a Mid/Senior iOS Developer, you will be working for our client, a leader in the online banking sector dedicated to delivering modern, secure, and user-friendly mobile applications used by a broad customer base. Your innovations will drive impactful improvements in financial technology, shaping seamless digital experiences for millions. This role offers a platform for growth and the chance to be part of cutting-edge FinTech solutions. Your main responsibilities: Develop and maintain mobile applications for iOS using Swift and Xcode Implement new features focusing on performance, scalability, and usability Apply architectural patterns such as MVVM in mobile application development Integrate mobile applications with backend services using REST APIs and WebSockets Write and maintain unit, snapshot, and UI tests to ensure application quality Collaborate with cross-functional teams including backend developers and QA engineers Participate in code reviews and ensure adherence to coding standards and best practices Support CI/CD processes and contribute to the automation of build and deployment pipelines You're ideal for this role if you have: At least 4 years of commercial experience in mobile development, including 2+ years in iOS Strong knowledge of Swift (5+) and experience working with Xcode Experience using version control systems such as Git, Bitbucket, or GitHub Understanding of object-oriented and protocol-oriented programming (OOP/POP) Knowledge of design patterns with focus on MVVM Practical knowledge of software engineering principles such as SOLID, YAGNI, KISS, DRY Experience working with SwiftUI and UIKit Knowledge of integrating mobile applications with backend services (REST API, WebSocket) Familiarity with CI/CD tools such as Jenkins or TeamCity Experience writing automated tests including unit, snapshot, and UI tests Nice to have: Android competencies Language Required for the role: Communicative Polish proficiency Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role.