Senior React Native Engineer - App Owner (w/m/x/d)

MILES Mobility; Berlin; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Mobility credits

Urban Sports Club

Discounts

Home office

Retirement plan

Growth opportunities

Social impact

Job summary

MILES Mobility Berlin is seeking a senior React Native engineer to own the consumer mobile app end to end—from architecture to store releases. You will keep the app fast, stable and safe to change, raising its quality with every version.

You will build native modules in Swift or Kotlin, own native build, release and store distribution for iOS and Android, and coordinate API contracts with backend engineers.

Qualifications

• 5+ years of React Native in production delivering apps to App Store and Google Play.
• Strong native knowledge: Swift or Objective-C with Xcode; Kotlin or Java with Android Studio and Gradle.
• Fluent English; eligible to work in Germany.
• Strong TypeScript/JavaScript with modern state management.
• Experience with REST APIs and offline/retry/error handling.
• Automated testing with Jest and Detox or Maestro, CI like GitLab CI or GitHub Actions.
• Store releases with fastlane: signing, pre-release test tracks and staged rollouts.

Responsibilities

• Own the app's architecture, code quality, performance and stability on iOS and Android.
• Build and maintain native modules in Swift or Kotlin where React Native is not enough.
• Own native build, release and store distribution for iOS and Android.
• Agree API contracts with backend engineers and handle offline, retry and error states.
• Integrate and maintain third-party SDKs for payments, maps, analytics and messaging.
• Build and maintain automated test coverage and run it in CI.
• Keep the codebase's AI tooling in version control and review it like code.
• Effectively deploy and use AI agents.

Skills

React Native

TypeScript

JavaScript

REST API

CI/CD

Tools

Xcode

Android Studio

Gradle

fastlane

Jest

Detox

Job description

Join the ride!

You own our consumer mobile app end to end, from architecture to store release. One
React Native codebase ships to iOS and Android, and you are accountable for its code, its
native layer, its releases and the app side of every API contract.
The app is how our customers experience the product every day. Your work keeps it fast,
stable and safe to change, and raises its quality and release confidence with every
version.
This position is Berlin based.

Your Responsibility

• Own the app's architecture, code quality, performance and stability on iOS and Android
• Build and maintain native modules in Swift or Kotlin where React Native is not enough
• Own native build, release and store distribution for iOS and Android
• Agree API contracts with backend engineers and handle offline, retry and error states
• Integrate and maintain third-party SDKs for payments, maps, analytics and messaging
• Build and maintain automated test coverage and run it in CI
• Keep the codebase's AI tooling in version control and review it like code
• Effectively deploy and use AI agents.

Your Experience

• 5+ years of React Native in production, shipped to both the App Store and Google Play
• Solid native knowledge: Swift or Objective-C with Xcode, Kotlin or Java with Android, Studio and Gradle
• Strong TypeScript and JavaScript, and experience with modern state management
• REST API integration with deliberate handling of async, offline and error states
• Automated testing with Jest and Detox or Maestro, run in CI such as GitLab CI or GitHub Actions
• Store releases with fastlane: signing, pre-release test tracks and staged rollouts
• Fluent in English, and eligible to work in Germany

Highly desired

• Experience in mobility, logistics or another operations-heavy consumer product
• Map-heavy apps: location permissions, push notifications and deep linking
• Payment SDK integration in a consumer app
• Comfortable reading backend code in a typed language and SQL
• Accessibility and localisation for a multi-language audience
• Daily use of AI coding agents, reviewing their output like any pull request

Nice to have

• A valid driving licence (EU category B or equivalent). Testing the product includes trip on the road.

Don't tick every box? Get in touch anyway. Your drive to learn and grow matters a lot to us.

Benefits

• Mobility: Choose between monthly MILES credits or the Deutschlandticket.
• Fitness: Enjoy a subsidized Urban Sports Club membership for your physical and mental well-being.
• Discounts: Access 1,500+ providers for discounts on sneakers, theater visits, and more.
• Home Office: Enjoy the flexibility of working from our office in Berlin and from home.
• Retirement: Secure your financial future with our attractive pension plan.
• Growth: We prioritize personal development through knowledge sharing and training opportunities (with the support from our HR Team and the Team Leads).
• Social Impact: We dedicate a portion of our revenue to support regional social projects, actively contributing to the well-being of society and the environment. #milescharity