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October 13, 2026

Kotlin Multiplatform Developer

Mid • On-site

Warsaw, Poland

Quick Facts

  • Role: Kotlin Multiplatform Developer (long-term program)

  • Work model: Hybrid (about 1 day per week onsite at the client office)

Description

You’ll work on a strategic program to create a secure, intuitive, and scalable electronic banking platform for corporate clients. You will develop and maintain mobile and multi-platform features using Kotlin Multiplatform and Compose Multiplatform, implement reactive logic with coroutines and Flow, and integrate with external services and APIs.

The program focuses on security, regulatory compliance, high software quality, and system reliability.

Responsibilities

  • Design, develop, and maintain mobile and multi-platform applications using Kotlin, Kotlin Multiplatform, and Compose Multiplatform

  • Create modern user interfaces with Jetpack Compose

  • Implement application logic using coroutines and Flow and apply reactive programming best practices

  • Design and develop application architecture based on MVI and MVVM patterns

  • Integrate applications with external services and APIs using Ktor and Retrofit

  • Manage dependencies using Koin and Hilt

  • Create, maintain, and evolve unit tests using JUnit and MockK

  • Configure and optimize build processes with Gradle

  • Work with Git (branches, pull requests, code review)

  • Collaborate with analysts, testers, and other developers to deliver high-quality solutions

  • Maintain code quality, readability, scalability, and compliance with agreed project standards

  • Use AI tools to improve the software development process, including code creation, analysis, and optimization

Benefits

  • Contract Manager: a dedicated main point of contact for project coordination and future collaboration opportunities

  • Training and events: selected trainings, certifications, and conferences related to the projects (rules and funding agreed individually)

  • Participation in community initiatives (e.g., webinars) and optional events

  • Optional additional services such as private medical care, sport benefits, insurance, and psychological support (availability, pricing, and terms per service)

  • A cafeteria platform to choose from available services/products using allocated points

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