Android Developer with Kotlin Multiplatform (f/m/x)

Listed as a remote role based in Warsaw, Mazowieckie, Poland. We are looking for an Android Developer to join the team developing an omnichannel platform for one of the largest banks in Poland, responsible for developing and maintaining modern mobile applications used by hundreds of thousands of users. The project is carried out in an environment with high requirements for quality, security, and scalability, using Kotlin Multiplatform as a key technology to share business logic across platforms. Your tasks Development and maintenance of a mobile application in the banking ecosystem Design and implementation of shared business logic in Kotlin Multiplatform for Android Creating user interfaces based on Jetpack Compose and Compose Multiplatform Integrating the application with banking systems, external services, and payment mechanisms (e.g., Google Pay) Ensuring code quality through automated tests, code reviews, and participation in architectural decisions Providing technical support to the team – troubleshooting, code review, and knowledge sharing Collaboration with product, backend, iOS teams, and other IT units to deliver cohesive solutions Participation in maintaining and developing CI/CD processes and application build and test pipelines Requirements Minimum 5 years of experience as an Android Developer At least 3 years of practical experience with Kotlin Multiplatform Strong knowledge of Clean Architecture and SOLID principles Minimum 2 years of experience in asynchronous programming using Coroutines or RxJava Experience with Dependency Injection using Koin Experience working with Jetpack Compose and Compose Multiplatform Ability to write BDD tests Fluent Polish language skills required Must be located in Poland Job no. JOB-F7M69 Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws. Benefits For You Great Place to Work Solid financial situation Contracts with the biggest brands Centre of internal trainings Many experts you can learn from Open and accessible management team Profit sharing Passion Sponsorship program Regular integration events and trips Comfortable and well-equipped offices MySii app Medical care Show more Show less Seniority level Mid-Senior level Employment type Full-time Job function Engineering and Information Technology Industries IT Services and IT Consulting