Staff Mobile Engineer – Platform

Betterment Betterment · Fintech · New York, NY · Engineering

Staff Mobile Engineer on the Mobile Platform team responsible for building and maintaining shared mobile infrastructure, frameworks, and tooling that power Betterment's applications. The role focuses on shaping the developer experience for mobile engineers, ensuring fast, safe, and sustainable feature delivery.

What you'd actually do

  1. Build and maintain the shared React Native frameworks, libraries, and developer tooling that mobile product teams use to deliver customer-facing features
  2. Partner with engineers across engineering to improve reliability, performance, and security of our mobile apps
  3. Lead medium-to-large scale platform initiatives, balancing tradeoffs to ship high-quality solutions continuously and iteratively
  4. Collaborate closely with Product, Design, and fellow engineers to ensure platform capabilities align with business and customer needs
  5. Teach and Learn. As a Staff Engineer, we expect you to share your knowledge with new, junior, and senior engineers. Help mentor and grow our team professionally as well as learn from our leaders to level up your own talents.

Skills

Required

  • JavaScript/TypeScript
  • React Native
  • iOS platforms
  • Android platforms
  • GraphQL
  • mobile networking best practices
  • software architecture
  • scalability
  • performance considerations in mobile apps
  • leading large platform migrations
  • driving adoption
  • code quality
  • test coverage
  • accessibility
  • performance
  • debugging complex production issues
  • mentorship
  • collaboration

Nice to have

  • Flutter

What the JD emphasized

  • Strong expertise in JavaScript/TypeScript and React Native development
  • Experience designing and maintaining shared libraries, frameworks, or infrastructure for mobile applications
  • Strong understanding of software architecture, scalability, and performance considerations in mobile apps
  • Experience leading large platform migrations and driving adoption
  • Strong track record leading projects, driving adoption of platform improvements, and making pragmatic tradeoffs while maintaining quality