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Senior Android Engineer

intent

full-time

Posted on:

Location Type: Hybrid

Location: WarsawPoland

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Salary

💰 PLN 15,000 - PLN 30,000 per month

Job Level

About the role

  • Design, build, and maintain high-quality Android applications for IoT and connected devices
  • Work close to hardware, firmware, and embedded teams, not just the mobile layer
  • Implement device onboarding and setup flows
  • Optimize performance, threading, and reliability in complex environments
  • Review pull requests, give feedback, and help keep code quality high
  • Write and maintain unit tests
  • Take part in technical discussions, daily calls, and knowledge sharing

Requirements

  • 6+ years of commercial Android experience
  • Strong proficiency in Kotlin and Java
  • Hands-on experience with Jetpack Compose (Kotlin UI)
  • Solid knowledge of Kotlin Coroutines and async programming
  • Experience with unit testing / TDD
  • Familiarity with dependency injection (Hilt, Koin)
  • Strong experience building apps, communicating with devices over Bluetooth Low Energy (BLE)
  • Understanding of Android internals (SDKs, system components, lifecycle)
  • B2+ English, comfortable in everyday communication
  • Familiarity with C/C++ for shared or native modules
  • Understanding of networking fundamentals: TCP / UDP / IP REST / HTTP WebSockets
  • Knowledge of secure authentication & authorization: OAuth 2.0 OpenID Connect Session management, RBAC
  • Experience with performance optimization and multi-threading
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
Android developmentKotlinJavaJetpack ComposeKotlin Coroutinesunit testingTDDdependency injectionBluetooth Low Energyperformance optimization
Soft Skills
communicationcollaborationfeedbackknowledge sharing