Senior Android Engineer (Kotlin) - Freelance/B2B

Flix; United States; Remote; USD 46,000 - 60,000; Full time

Job summary

Flix is seeking an experienced Software Engineer on a freelance B2B contract to join our Android team. You’ll design, build, and maintain high-quality apps, focusing on performance, UX, and reliability while collaborating with iOS, backend, and feature teams.

You should have 6+ years of Android development, strong Kotlin (Jetpack Compose, MVVM, Coroutines), and proven experience in testing, CI/CD, and Firebase analytics/services. The engagement is Poland-based with flexible collaboration.

Qualifications

• 6+ years of Android development experience.
• Strong Kotlin skills with Jetpack Compose, MVVM, and Coroutines.
• Experience with performance optimizations and UI responsiveness.
• Proficient in unit, integration, and UI testing.
• Familiar with CI/CD pipelines (GitLab, Fastlane) and Docker.
• Experience with Firebase Analytics, Remote Config, Crashlytics.

Responsibilities

• Design, develop, and maintain Android applications with scale and quality.
• Collaborate with iOS and backend teams to align features.
• Improve codebase architecture and performance.
• Enhance app performance, accessibility, and battery usage.
• Contribute to CI/CD pipelines and release processes.
• Create and maintain technical documentation.

Skills

Android dev

Kotlin

Jetpack Compose

MVVM

Coroutines

Testing

CI/CD

Firebase

Tools

GitLab

Fastlane

Docker

Firebase

Job description

Flix is seeking an experienced Software Engineer on a freelance B2B contract to join our Android team. You’ll design, build, and maintain high-quality apps, focusing on performance, UX, and reliability while collaborating with iOS, backend, and feature teams.

You should have 6+ years of Android development, strong Kotlin (Jetpack Compose, MVVM, Coroutines), and proven experience in testing, CI/CD, and Firebase analytics/services. The engagement is Poland-based with flexible collaboration.