We are seeking a **Senior Android Developer** to join our team and work on mobile applications used by tens of millions of cardholders worldwide. This role is ideal for someone with strong technical expertise, creativity, and a passion for solving challenging problems. We are looking for a developer who values user experience, writes clean and maintainable code, and is eager to share innovative ideas and contribute to impactful projects. EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi\-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting\-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential. **Responsibilities** * Develop and maintain high\-quality Android applications tailored for a global audience * Collaborate with cross\-functional teams to define, design, and implement new features and enhancements * Ensure application performance, scalability, and responsiveness across different devices and platforms * Troubleshoot, debug, and resolve technical issues to maintain the stability and reliability of applications * Write and maintain clean, efficient, and reusable code following industry best practices * Conduct code reviews to ensure quality and optimize the development process * Test applications thoroughly, including unit and integration testing, to ensure functionality and reliability * Continuously explore and integrate new technologies to improve the development process and product quality **Requirements** * Bachelor’s or Master’s degree in Computer Science, a related field, or equivalent practical experience * At least 3 years of hands\-on experience in Android development using Kotlin * Proven experience in building and maintaining Android applications from the ground up * Proficiency in writing, refactoring, and deleting code to improve performance and maintainability * Familiarity with build tools such as Gradle, GitHub Actions, and Circle CI for efficient development workflows * Experience with continuous integration (CI) practices to automate and streamline development and deployment processes * Strong skills in identifying and fixing bugs to ensure the stability of applications * Knowledge of asynchronous coding patterns for handling concurrency and improving app performance * Expertise in performance analysis and optimization to enhance user experience * Experience working with and improving legacy codebases * Proficiency in writing and maintaining unit and integration tests to ensure application stability * Familiarity with contributing to or using open\-source libraries in development projects * Ability to work effectively in a globally distributed team environment * Strong time management and self\-starting skills to meet deadlines and manage priorities * Experience integrating Android applications with custom\-built backend services * Ability to design solutions for complex and open\-ended problems * Fluency in English (B2\+ level or higher), with strong communication skills and experience in client\-facing interactions **Nice to have** * Experience with Kotlin Coroutines for managing asynchronous tasks and improving efficiency * Familiarity with the MVI (Model\-View\-Intent) architecture pattern for building scalable and maintainable applications * Knowledge of integrating and working with REST APIs for backend communication * Hands\-on experience with Jetpack Compose for building modern, declarative user interfaces * Proficiency with JUnit for unit testing and ensuring code quality * Familiarity with GitHub Actions for automating workflows and CI/CD processes * Experience with Espresso for testing UI components and ensuring application functionality * Knowledge of WireMock for simulating API responses during development and testing phases * Experience with OkHttp for efficient HTTP client operations in Android applications * Familiarity with Dagger for implementing dependency injection in Android projects **We offer** * Connectivity Bonus (25,000 ARS are paid with a salary receipt at the end of each month as a non\-wages concept). * Medicina Prepaga (It covers the collaborator and direct family group). * Paternity Leave (Two additional days are added to what is established by law, total of 4 days). * Discounts card. * English Training (English lessons, twice per week). * Training Program (Access to multiple customized training plans according to the needs of each role within the company). * Marriage bonus (The company doubles the allowance established by law that ANSES offers). * Referral Program (Referral bonus is paid when the referral of a collaborator joins the Company). * External Agreements and Discounts. * Vacations: 14 calendar days a year *By applying to our role, you are agreeing that your personal data may be used as in set out in EPAM´s Privacy Notice and Policy.*