Senior Mobile Cross Platform Engineer

About the Role

As a mobile platform engineer, you'll help shape the future of Chime's React Native app, building the infrastructure and tooling that make development faster, safer, and more scalable for hundreds of engineers working alongside AI.

You'll thrive in this role if you enjoy building for developers, solving complex technical problems, and multiplying your impact on others while delivering a best-of-class experience for our 10M+ monthly active members.

In this role, you can expect to

• Build and maintain internal frameworks, developer tooling, and infrastructure.
• Collaborate with product and engineering teams to improve app quality, performance, and observability.
• Identify bottlenecks and deploy operational efficiencies to automate mobile CI/CD and release orchestration, reducing manual effort and increasing reliability.
• Design and improve tooling to reduce friction in the developer loop and maximize engineering velocity.
• Mentor engineers and raise the bar on technical standards, code quality, and delivery practices through design reviews, guidance, and example.
• Partner with QA to lead Chime’s mobile release process across iOS and Android.
• Build and scale AI-enabling app development infrastructure to support increased product velocity.

To thrive in this role, you have

• 5+ years of experience in cross-platform, mobile development, ideally with React Native.
• A collaborative mindset, excellent communication skills, and a drive to document and share what you build.
• Strong fluency in TypeScript and familiarity with React, React Native.
• Experience with iOS and Android build, configuration, and distribution systems.
• Shipped apps that are used by millions of users.
• A track record of profiling and improving app performance.
• Familiarity with observability and analytics tools like Bugsnag, Datadog, Sentry, or Hex.
• Deep understanding of server-client architecture, leveraging GraphQL and performance profiling (e.g., memory pressure, screen latency, optimizing time to interactive, preloading).
• Experience with mobile build infrastructure platforms such as Bitrise, CircleCI, or GitHub Actions.

Nice-to-have

• Experience with feature flag systems, runtime controls, or OTA delivery frameworks (e.g., Expo Updates, CodePush).
• Experience building the infrastructure that supports AI-native mobile development.
• Familiarity with state management tools like Redux, React Context, AsyncStorage, or MMKV.
• Scaled mobile quality practices and testing frameworks.

#LI-Onsite #LI-WS1

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