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Senior Frontend DeveloperProtagonaUnited States
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Senior Frontend Developer

Protagona
  • US
    United States
  • US
    United States
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About

As a
Senior Frontend Developer
, you will lead the development of high-performing web and mobile applications built with
React
and
React Native
. You'll work closely with designers, backend engineers, and product owners to deliver seamless, scalable, and elegant user experiences across platforms. This role is ideal for someone who has led complex frontend projects from concept to production, thrives in a collaborative environment, and enjoys mentoring other engineers while still being hands-on with code.

Responsibilities

  • Lead the architecture, development, and delivery of modern web and mobile interfaces using React, React Native, TypeScript, and related technologies
  • Translate product requirements and design mockups into fully functional, responsive, and maintainable UI components
  • Drive technical discussions, code reviews, and architecture decisions to ensure performance, reliability, and scalability
  • Collaborate cross-functionally with product, backend, and design teams to define technical approaches and timelines
  • Implement best practices for state management, routing, testing, and CI/CD for frontend systems
  • Own the frontend build pipeline and release process for multiple environments
  • Mentor junior and mid-level developers through code reviews, pair programming, and technical guidance
  • Stay current with modern frontend tools, frameworks, and best practices to continuously improve development processes

Desired Skills & Experience

  • 5+ years of professional frontend development experience, with at least 2+ years leading projects
  • Expert-level proficiency in React, React Native, and TypeScript
  • Strong understanding of modern JavaScript (ES6+), CSS-in-JS, and component-driven design
  • Experience working in monorepo or multi-platform codebases (web + mobile shared libraries)
  • Familiarity with frontend build tools (Webpack, Metro, Vite, Babel, etc.) and package managers (npm, yarn, pnpm)
  • Experience integrating APIs and managing complex state (React Query, Redux Toolkit, Zustand, etc.)
  • Solid understanding of mobile-specific concerns (navigation, performance, offline mode, native modules)
  • Demonstrated ability to lead projects end-to-end — from architecture and planning through to QA and production deployment
  • Strong communication skills and the ability to collaborate with both technical and non-technical stakeholders

Nice to Haves

  • Experience with Expo, , or AWS Amplify
  • Background in CI/CD pipelines (GitHub Actions, CircleCI, or similar)
  • Familiarity with design systems and component libraries

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  • United States

Languages

  • English
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