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Open nowPosted 26 hours agoWe saw it 49 min after it went up

Software Engineer (Android) - Service Agreement

Flix124 open roles

Where
Warsaw
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Your applicationOpen nowSoftware Engineer (Android) - Service AgreementFlix · Warsaw

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The clock on this job

Early applications get read.

15.1% of postings close within 7 days. Measured by our own scanner across the market. Flix postings stay open a median of 23 days.

Share of postings closed within
  1. 2.4%1 day
  2. 6.5%3 days
  3. 15.1%7 days
This job: posted 26 hours ago

Flix median: 23 days open

The posting

Rate: 130 – 170 PLN/hour (B2B)

We are looking for an experienced Software Engineer to join Flix on a freelance/service agreement basis (B2B contract). This is a contractor engagement for a seasoned professional who doesn’t just write code but thinks about the entire mobile ecosystem, including performance, quality, scalability, UX, and testing.

Scope of Services

Bring expertise in building high-quality, scalable, and user-friendly Android applications to enhance the Flix passenger journey — optimizing key features such as post-booking and home page experiences, while incorporating innovative solutions that drive mobile development excellence.

About the Engagement

  • Design, develop, and maintain high-quality Android applications with a focus on scalability, performance, and user experience.
  • Support closely iOS, Backend, and feature teams to align on feature specifications and ensure seamless cross-platform integration.
  • Drive technical improvements across the entire codebase, including architecture enhancements and codebase modernization.
  • Enhance app performance and user experience through UI optimizations, accessibility compliance, and improvements in battery usage, memory management, and load times.
  • Leverage analytics & metrics to make data-driven decisions, optimizing performance and engagement based on user behavior and app health.
  • Write clean, maintainable, high quality and testable code, ensuring high test coverage through unit, integration, and UI tests to guarantee reliability.
  • Actively contribute to improving CI/CD pipelines, app stability, and release processes, driving faster delivery and higher productivity.
  • Maintain clear, up-to-date technical documentation, including API specs, architectural decisions, and code comments, fostering transparency and knowledge sharing within the stakeholders.

About You

  • 6+ years of Android development experience with a proven track record of building high-quality, user-facing Android apps.
  • Strong expertise in Kotlin (Jetpack Compose, MVVM, Coroutines), with a deep understanding of Android architecture and best practices.
  • Hands-on experience with performance optimizations, background services, memory management, and smooth user interactions (UI, animations).
  • Experience with testing (unit, integration, UI testing) and a strong commitment to writing testable, maintainable code.
  • Ability to drive technical strategy, ensuring high standards in code quality, performance, and scalability.
  • Understanding of SOLID principles and software architecture patterns.
  • Experience working with CI/CD pipelines and automated deployment systems (GitLab, Fastlane, Docker).
  • Experience with Firebase SDK, including Firebase Analytics, Remote Config, and Crashlytics.
  • Customer-centric approach with a focus on delivering great user experiences.

Cooperation model

  • Cooperation based on a service agreement (B2B/freelance contract), not an employment contract.
  • You will operate as an independent contractor, responsible for delivering agreed services and submitting invoices
  • Location: open for contractors based in Poland
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