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Salary
≈ $53k – $97k per year (Estimated)
Location
Hybrid (Warsaw, Poland)
Seniority
Senior · 5+ years exp
Employment
Contractor

First seen by Alion on Oct 7, 2026.

Overview
Company
Impact
Profile match
Transition Technologies is a Polish technology group founded in 1991 and headquartered in Warsaw. It builds software and optimisation systems for the energy, industrial and manufacturing sectors and runs several specialised subsidiaries. The group employs thousands of engineers across Poland, the United States and Asia.

We’re seeking an experienced Senior Android Engineer to focus on developing and 
optimizing our Android applications, using strong expertise in modern mobile technologies. 
You’ll be involved throughout the entire mobile app lifecycle, shaping features, designing 
the software, and refining the user experience.

Your responsibilities:

  • Build and maintain reliable, high-performing Android apps.

  • Write clean, efficient and testable Kotlin code.

  • Work closely with engineering, product, design, and QA teams.

  • Translate product requirements into solid technical solutions.

  • Refactor and modernize legacy code and support the transition toward a modular application architecture.

We are looking for you, if you have:

  • 5+ years of Android development experience, ideally in product-driven or high-scale

  • environments.

  • Strong problem-solving skills and the ability to turn complex challenges into

  • actionable steps.

  • Focus on scalability, maintainability, and long-term platform health.

  • Experience working in Agile teams with planning, estimation, and iterative delivery.

  • Strong expertise in Kotlin, MVVM, MVI, Clean Architecture, and modular app

  • architecture.

  • Experienced with Coroutines, Jetpack Compose, Room, and dependency injection

  • (Hilt/Dagger).

  • Solid experience integrating RESTful APIs, data processing, and error management.

  • Able to analyze and improve app performance, memory usage, stability, and

  • responsiveness.

  • Proven ability to deliver polished, intuitive, user-focused mobile interfaces.

  • Experience using AI-assisted development tools like Cursor or Claude.

  • Excellent communication skills in English

We offer:

  • Participation in interesting and challenging projects.

  • Flexible working hours.

  • A great, non-corporate atmosphere.

  • Opportunities for development and promotion.

  • Attractive package of benefits.

  • Work model: hybrid (2 days per week from the office) or remote 

We reserve the right to contact the selected candidates.

Tech stack

  • Android
  • Kotlin
  • MVVM
  • RESTful APIs
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