Android Developer (Fintech)

We are looking for a skilled Android Developer to join our FinTech team and help build secure, high-performance mobile applications used in real financial scenarios. You will work closely with product, backend, and QA teams to deliver a reliable and intuitive Android experience.

Details Location: Sofia, Bulgaria (office in city centre) Employment Type: Full-time, remote Start Date: ASAP Language Requirements: English — B2 or higher

Key Responsibilities Design, develop, and maintain Android applications for FinTech products Write clean, scalable, and testable code following Android best practices Integrate mobile applications with backend services and REST APIs Collaborate with product managers, designers, backend developers, and QA engineers Ensure high performance, stability, and security of mobile applications Participate in code reviews and contribute to technical decision-making Support release cycles, bug fixing, and continuous optimization Stay up to date with Android platform updates and emerging technologies

Requirements 4+ years of professional experience in Android development Strong knowledge of Kotlin (Java is a plus) Experience with Android SDK, Jetpack components, and modern Android architecture (MVVM, Clean Architecture) Hands-on experience integrating RESTful APIs Solid understanding of mobile security principles and best practices Experience with Git and version control workflows Familiarity with Agile/Scrum development environments Strong analytical and problem-solving skills Ability to work independently while collaborating effectively in a team English level B2 or higher

Nice to Have Experience in FinTech, banking, payments, or lending applications Experience with Coroutines, Flow, or RxJava Knowledge of CI/CD pipelines for Android applications Experience with automated testing (JUnit, Espresso, UI tests) Experience publishing apps to Google Play