Senior Android EngineerJoin us, and build secure, high-performance mobile applications daily!Kraków - based opportunity with hybrid work model (2 days/week in the office).*Role requires the conversion to client's organization after 6 months*As a Senior Android Engineer, you will be working for our client, a global financial services leader driving digital transformation at scale. The client is modernizing its mobile platforms to deliver secure, intuitive, and high-performance digital experiences to millions of users. You will play a key role in building and evolving Android applications as part of a collaborative Agile team. This role combines deep technical expertise with leadership and architecture responsibilities to shape the next generation of secure, scalable, and user-friendly mobile solutions.Your main responsibilities:Designing and developing scalable Android applications using Java and KotlinCollaborating with product managers, UX/UI designers, and backend developersIntegrating RESTful APIs and managing local data with Room or SQLiteImplementing clean architecture patterns and Android Jetpack componentsLeading code reviews and mentoring other Android developersApplying dependency injection frameworks like Dagger or HiltWriting and maintaining unit tests and UI automation testsOptimizing app performance, memory usage, and responsivenessManaging continuous integration pipelines and version controlEnsuring Android apps meet security, accessibility, and design standardsYou're ideal for this role if you have:Proven experience in a senior or technical leadership role in Android developmentExpert-level knowledge of Android SDK, Jetpack libraries, and app architectureProficiency in Java and Kotlin programming languagesStrong experience with Android Studio and related development toolsHands-on experience with reactive programming using RxJava or Kotlin CoroutinesExpertise in developing scalable, maintainable Android applicationsSolid understanding of REST APIs, JSON, and asynchronous networkingProficiency in local data storage using Room or SQLiteStrong knowledge of Android UI design, Material Design, and custom viewsDegree in Computer Science and 7+ years of engineering experienceIt is a strong plus if you have:Experience with Firebase Cloud Messaging and push notification implementationFamiliarity with Android NDK and native code integrationUnderstanding of Android's permissions model and runtime permission handlingExperience with background processing and concurrency in AndroidKnowledge of Android accessibility features and inclusive designWe offer you:ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious and driven people. The offer includes:Stable and long-term cooperation with very good conditionsEnhance your skills and develop your expertise in the financial industryWork on the most strategic projects available in the marketDefine your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several yearsParticipation in Social Events, training, and work in an international environmentAccess to an attractive Medical PackageAccess to Multisport Program#GETREADYInternal job ID #7348You can report violations in accordance with ITDS’s Whistleblower Procedure available here.