Senior Mobile Cross Platform Engineer

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.

• 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.

• 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 Type Script 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 Git Hub Actions.

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

#LI-Onsite #LI-WS1

Below is the base salary offered for this role and level of experience. Full-time employees may also be eligible for bonus(es), competitive equity, and benefits. For commissioned roles, the base salary listed in this job description does not include incentive/variable pay. The actual base salary offered may be higher, depending on your location, skills, qualifications, and experience.

$164,000 – $227,000 USD

At Chime, we believe that everyone can achieve financial progress. We created Chime—a financial technology company, not a bank—on the premise that core banking services should be helpful, easy, and free. Through our user-friendly tools and intuitive platforms, we empower our members to take control of their finances and work towards their goals. Whether it's starting a savings account, purchasing a first car or home, launching a business, or pursuing higher education, we're proud to have helped millions unlock their financial potential.

We're a team of problem solvers, dreamers, and builders with one shared obsession: our members. From day one, Chimers have worked tirelessly to out-hustle and out-execute competitors to bring our mission to life. Their grit and determination inspire us to work harder every day to deliver the…