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