Android Developer: Kotlin Multiplatform for Banking

Sii Poland; Łódź; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Great Place to Work

Profit sharing

Medical care

Centre of internal trainings

Open and accessible management

Job summary

Sii Poland is seeking an experienced Android Developer to join a team building an omnichannel banking platform used by hundreds of thousands of users. You will share business logic via Kotlin Multiplatform and craft UI with Jetpack Compose, while integrating with banking systems and payment flows like Google Pay.

The role emphasizes high quality, security, and scalable architecture, with CI/CD processes and cross-team collaboration as core responsibilities.

Qualifications

• 5+ years of experience as an Android Developer
• At least 3 years of practical Kotlin Multiplatform experience
• Strong knowledge of Clean Architecture and SOLID principles
• Minimum 2 years of asynchronous programming with Coroutines or RxJava, DI with Koin
• Experience with Jetpack Compose and Compose Multiplatform
• Ability to write BDD tests
• Fluent Polish language skills required
• Must be located in Poland

Responsibilities

• 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

Skills

Kotlin Multiplatform

Clean Architecture

SOLID principles

Asynchronous programming with Corount?

Tools

Jetpack Compose

Compose Multiplatform

RxJava

Koin

Job description

Sii Poland is seeking an experienced Android Developer to join a team building an omnichannel banking platform used by hundreds of thousands of users. You will share business logic via Kotlin Multiplatform and craft UI with Jetpack Compose, while integrating with banking systems and payment flows like Google Pay.

The role emphasizes high quality, security, and scalable architecture, with CI/CD processes and cross-team collaboration as core responsibilities.