Our Client is expanding their internal product team to further develop a sophisticated, driver-facing mobile ecosystem focused on navigation and location-based intelligence.This is a unique opportunity to join a scaling team where your architectural decisions will directly influence the daily experience of thousands of drivers operating in demanding, real-world conditions.The Role:As the Lead Developer, you will play a key role in shaping the architecture of next-gen mobile applications for both Android and iOS. You will be responsible for the implementation of Kotlin Multiplatform (KMP) solutions that enable driver-centric experiences through optimized routing, location intelligence, and high-performance scalability.What You Will Do:Architectural Leadership: Own and shape the mobile Kotlin Multiplatform architecture across the project.Technical Decision Making: Lead technical choices for both Android and iOS platforms.Complex Feature Delivery: Develop sophisticated functionality such as GPS tracking, streaming/offline maps, and social features.Cross-functional Collaboration: Work directly with the Client's product management and backend engineers to move fast without sacrificing quality.Engineering Excellence: Establish best practices, conduct code reviews, and implement test automation strategies to maintain system reliability.Team Growth: Coach and develop junior developers, helping them grow their technical skills and contribute effectively to the project.What We’re Looking For:Mobile Expertise: 5+ years of professional mobile development experience.KMP Specialist: Strong Kotlin expertise with hands-on experience using Kotlin Multiplatform in production.Technical Depth: Deep understanding of Android development and comfortable collaborating closely with iOS engineers (Swift).Architecture: Solid skills in building scalable, performant, and memory-efficient mobile applications.Platform Fundamentals: Strong grasp of mobile lifecycles, background execution, and sensor integration.Communication: C1 level proficiency in both English and Polish Mindset: Excellent problem-solving skills and a pragmatic, product-oriented approach.Nice to Have:Prior experience with automotive, navigation, mapping, or social applications.What We Offer:💲 Long-term B2B contract: 23 000 - 30 000 PLN net + VAT / month 📍 Remote work  model but we also  welcome you to work from our office in Gdańsk.(Oliva Center)🥇 Development budget 1000 PLN per year for courses, training, or conferences🩺 Private healthcare (Medicover)🏋‍♂️ Sports card (Medicover Sport)🤸‍♂️ Relaxed atmosphere with minimal bureaucracy and formalities