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Sii Poland

Android programmer - banking industry (f/m/x)

Sii Poland
Poland · Full-time · Mid-Senior

To join a team developing an omnichannel platform in one of the largest banks in Poland, we are looking for an experienced Android Developer/Programmer to develop and maintain modern mobile applications used by hundreds of thousands of users. The project is being implemented in an environment with high quality, security and scalability requirements, with a focus on Kotlin Multiplatform as a key technology for sharing business logic across platforms.

Your tasks

  • Mobile app development and maintenance in the banking ecosystem
  • Design and implementation of common business logic in Kotlin Multiplatform for Android
  • Development of user interfaces based on Jetpack Compose and Compose Multiplatform
  • Integrating applications with banking systems, external services and payment mechanisms (e.g. Google Pay)
  • Taking care of code quality through automated testing, code review and participation in architectural decisions
  • Supporting the team technically - assisting with troubleshooting, code review and knowledge sharing
  • Collaborate with product, backend, iOS and other IT teams to deliver consistent solutions
  • Participate in the maintenance and development of CI/CD processes and application build and test pipelines

Requirements

  • Minimum 5 years of experience as an Android Programmer/Programmer
  • At least 3 years of hands-on experience in Kotlin Multiplatform
  • Very good knowledge of Clean Architecture and SOLID principles
  • Minimum 2 years of experience in asynchronous programming using Coroutines or RxJava
  • Experience in Dependency Injection using Koin
  • Practical knowledge of network communication using OkHttp
  • Experience working with Jetpack Compose and Compose Multiplatform
  • Ability to write BDD tests (JUnit4, MockK, Roborazzi, screenshot tests)
  • Previous work with Git/Gerrit, code review in large teams, and independent problem solving
  • Fluency in Polish language required
  • Residence in Poland required

Job no. 260216-WI8QM

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

Key Skills

Ranked by relevance

kotlin android cicd ios
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Posted
Feb 21, 2026
Type
Full-time
Level
Mid-Senior
Location
Katowice
Company
Sii Poland

Industries

IT Services IT Consulting

Categories

Engineering Information Technology

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