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Senior Software Engineer, Mobile

Design, develop, and maintain production React Native mobile apps across iOS and Android. Requires 6+ years of mobile development experience, strong JS/TS proficiency, and experience with state management and testing frameworks.

140k – 220kBethesda, MDWaltham, MAMobile EngineeringHybrid6+ YOE
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About the role

What You'll Do

  • Design, develop, and maintain high-quality features across multiple production mobile applications using React Native, with a focus on performance, responsiveness, and reliability
  • Partner closely with product managers, UI/UX designers, and backend engineers to translate requirements into well-architected, shippable features
  • Write clean, maintainable, and testable code using JavaScript and TypeScript, applying architectural patterns that support scale across iOS and Android
  • Lead and actively participate in code reviews, setting a high technical bar and sharing knowledge to elevate the broader engineering team
  • Diagnose and resolve complex bugs and performance issues — identifying root causes and implementing durable solutions
  • Mentor junior engineers, invest in their growth, and contribute to a strong, inclusive engineering culture
  • Evaluate emerging React Native advancements and mobile development trends, and apply relevant innovations to continuously improve our platform

What You Bring

Must-Have

  • 6+ years of experience in mobile application development, with a strong focus on React Native, or an equivalent combination of education and hands-on experience
  • Strong proficiency in JavaScript and TypeScript, including experience with state management libraries such as Redux or MobX
  • Demonstrated experience building and maintaining complex, production-grade React Native applications across iOS and Android
  • Hands-on experience with testing frameworks (e.g., Jest, React Native Testing Library) and a commitment to test-driven development practices
  • Strong cross-functional collaboration, communication, and analytical problem-solving skills

Preferred

  • Familiarity with RESTful APIs, GraphQL, and asynchronous programming patterns
  • Working knowledge of Node.js for build tooling, scripting, or backend-for-frontend (BFF) integrations
  • Experience with CI/CD pipelines for mobile applications and automated deployment processes
  • Experience with mobile performance optimization, including memory management and battery efficiency

Skills

React NativeJavaScriptTypeScriptReduxMobxJestReact Native Testing LibraryREST APIsGraphQLNode.js

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