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November 4, 2026

Android Developer

Senior • On-site

Warsaw, Maz, Poland

Quick Facts

  • Role: Android Developer

  • Domain: Financial sector mobile applications

  • Main stack: Kotlin, Jetpack Compose, Kotlin Multiplatform, Clean Architecture, MVVM

Description

You will design and develop modern, production-ready Android mobile applications and continuously improve them. You’ll implement new features, refactor for quality and scalability, and ensure the app is well-tested using Espresso, JUnit, and MockK. The work is done collaboratively in Agile sprint cycles.

Responsibilities

  • Develop mobile applications for individual customers, including an app for the youngest users

  • Co-create new functionalities and deploy them to a running production application

  • Refactor existing code to improve quality and scalability

  • Test applications with Espresso, JUnit, and MockK

  • Work in an Agile team using sprint cycles

Requirements

  • Regular: minimum 3 years of Android application development

  • Senior: minimum 6 years of Android application development

  • Very good knowledge of Kotlin and Jetpack Compose

  • Knowledge of Kotlin Multiplatform

  • Practical knowledge of Clean Architecture and MVVM

  • Experience with testing: Espresso, JUnit, MockK

  • Knowledge of Agile methodologies and experience working in sprints

  • Senior only: experience publishing apps on Google Play

  • Senior only: experience mentoring the team

Benefits

  • Work as part of a team developing production mobile applications in continuous improvement mode

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