Join Miquido to work on a client project in the security / password management.The app is being actively refactored (MVP → MVI) and aims to provide advanced features (autofill, PGP encryption, extensive validation, multiaccount, and local database manipulation).You’ll be part of a cross-functional team operating in an agile setup, collaborating remotely on an open-source project.Start: Q1 2026Initial duration: ~3 months (possible extension)Seniority level: Strong Regular / SeniorWork model: RemoteLanguage: English (project language)You + Miquido =  Develop new Android app features and maintain existing ones per business requirements Refactor architecture from MVP toward MVI Write unit and UI/integration tests to ensure code reliability and quality Draft technical specifications prior to implementation Follow and enforcebest security practices (secure storage, encryption, biometric flows) Participate in peer code reviews, provide constructive feedback Cooperate with PMs, backend developers, QA and customers to ensure high quality Troubleshoot and debug performance, memory, battery, concurrency issues Support less-experienced team members Contribute to requirement definition and technical discussions Engage with open-source community feedback You can be the perfect match for us, if you have:  Excellent command of Kotlin and solid knowledge of the Android SDK Good knowledge of Java Experience with Jetpack Compose, XML layouts, ViewModel, Navigation (AndroidX) Familiarity with Kotlin Coroutines / Flow Practical experience with an injection framework (Koin, Dagger, Hilt, etc.) Strong knowledge of common Android libraries and frameworks Experience with various Android application architecture patterns (e.g. MVP, MVVM, MVI, Clean Architecture) Experience in continuous integration & automation (e.g. GitLab CI/CD) Proficiency with object-oriented design, design patterns, clean code Ability to write extensible, testable, maintainable code Experience profiling and debugging Android apps Understanding of application distribution (Play Store processes, signing, versioning) Strong Git skills Familiarity with Agile / Scrum methodologies Very good command of Polish and English (written & spoken; minimum C1) Ability to prepare specifications prior to implementation and work based on documented requirements It can be love at first sight if you also have: Deep knowledge of mobile security issues (OWASP, encryption, secure enclave) Experience with cross-platform / multi-platform mobile frameworks (e.g. Flutter, React Native, Kotlin Multiplatform) Prior experience contributing to open-source Android projects Experience with performance optimization, memory leaks detection Familiarity with analytics, crash reporting, logging frameworks Experience in AI-powered code completion and assistance tools such as GitHub Copilot and Tabnine. Proficiency in modern AI-enhanced IDEs, including JetBrains IDEs, Cursor and Trae. Familiarity with AI-assisted test generation and debugging tools, such as Qodo What do we offer? Ambitious, creative, talented & highly experienced team Contributing to projects for clients all over the world Flexible working hours and a possibility to work remotely We value your trust in providing us your data, thus we are striving to use commercially acceptable means of protecting it. Below you will find the necessary information about the data we collect and process when you send us your CV.The controller of your personal data is Miquido Spółka z ograniczoną odpowiedzialnością sp. k. with its seat in Krakow, Zabłocie 43a, 30-701 Kraków, Poland (“Miquido”, “We”, “Our” or “Us”)d