About us Wallester is a cutting-edge financial technology company that specializes in providing innovative solutions for businesses seeking to modernize their payment systems. By offering white-label card issuance platforms, seamless integration with existing infrastructure, and comprehensive support for both digital and physical cards, Wallester empowers companies to enhance their financial services and customer experience. Recognized as a leader in the FinTech space, Wallester has earned a reputation for its state-of-the-art technology, security, and scalability. Whether you are a startup or an established enterprise, Wallester delivers flexible, reliable solutions tailored to meet the evolving needs of the digital economy. Responsibilities + Design, develop, and maintain high-quality Android applications using Kotlin. + Collaborate closely with product managers, designers, and backend engineers to define, design, and ship new features. + Communicate clearly and proactively in English across cross-functional teams to ensure shared understanding and smooth execution. + Ensure the performance, quality, and responsiveness of applications by writing clean, efficient, and testable code. + Identify and fix bugs, performance bottlenecks, and other technical issues. + Contribute to architectural decisions and advocate for best practices in mobile development. + Maintain code quality through code reviews, unit and instrumentation testing. + Stay up-to-date with the latest trends and tools in Android development and contribute to team knowledge sharing. + Participate in agile development processes, including sprint planning, daily stand-ups, and retrospectives. Requirements + 5+ years of experience developing Android applications. + Proficiency in Kotlin, with a deep understanding of Android SDK and Jetpack libraries. + Experience with modern Android development practices such as MVVM, Clean Architecture, and dependency injection. + Familiarity with RESTful APIs, asynchronous programming (Coroutines, Flows), and persistent storage (Room, DataStore, etc.). + Experience working with version control systems, especially Git. + Strong understanding of Android UI design principles, patterns, and best practices. + Excellent problem-solving skills and a collaborative mindset. + Excellent written and verbal communication skills in English — you should be comfortable explaining technical concepts to non-technical stakeholders and collaborating with international teams. + Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience). Company offers: + Competitive salary + Career opportunities + Supportive and caring Leadership + Medical insurance upon the completion of probational period + A modern office in the center of Tallinn + A chance to work as part of a highly motivated and talented team + Referral program + Stebby + Team building and Company Events + Free parking