Fullstack Developer (React / Firebase / Supabase)

last updated October 5, 2025 2:29 UTC

Contra

HQ: San Francisco, CA

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Contra is hiring a freelance Fullstack Developer (React / Firebase / Supabase). You’ll work across the stack to build a polished, modular web platform that supports users in their career growth and job search.

Responsibilities
  • Build frontend features in React, ensuring responsiveness and smooth UX
  • Set up and integrate backend services with Firebase or Supabase
  • Implement secure user authentication and permissions
  • Ensure backend scalability and efficient data handling
  • Collaborate closely with the founder and design team to meet product goals
Requirements
  • Strong experience with React and modern frontend development
  • Solid backend experience with Firebase and/or Supabase
  • Experience deploying apps on Vercel or similar platforms
  • Comfort working with auth systems, serverless functions, and real-time databases
  • Understanding of API-driven architecture and clean code practices
  • Ability to work independently, communicate clearly, and meet deadlines
  • Bonus: experience with gamification, LMS tools, or AI-driven features

Apply info ->

To find out more about this job, please visit this link

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