IT & Software

Senior Frontend Developer

numi

London · England · United Kingdom

Our client is a leisure tech business whose camera and projector hardware turns real venues into interactive games. They need a Frontend Developer who is equally strong in React and React Native and has shipped native apps to the App Store and Google Play. You’ll join a small product team, report to the CTO and own apps that venue owners and players use every day.

What you’ll be doing

  • Building and shipping features across React web apps and React Native iOS and Android apps, from design handoff to production
  • Owning the mobile release process: builds, signing, TestFlight, Play Console, store submissions and over the air updates
  • Turning Figma designs into reusable, accessible components shared across web and mobile
  • Integrating REST APIs, Auth0 authentication and Stripe payments, with clean state management
  • Building device features including push notifications, deep linking and Bluetooth (BLE) connections to in-venue hardware
  • Fixing performance, crash and rendering issues on real devices, reviewing PRs and helping set frontend standards as the team grows

What we’re looking for

  • 4+ years building production frontend applications, with at least 2 years shipping React Native apps to both stores
  • Strong TypeScript and modern React (hooks, context, composition patterns)
  • Hands-on native tooling: Xcode, Android Studio, CocoaPods, Gradle, code signing and store release
  • State management and data fetching (Redux Toolkit, Zustand, TanStack Query or similar)
  • Auth flows with Auth0 or similar, plus unit and integration testing and CI
  • UK based with the right to work, and able to travel now and then for team sessions and venue visits

What’s on offer

  • Fully remote across the UK, with occasional travel
  • Real ownership: in your first 30 days you’ll ship to production and release both native apps without help
  • A direct line to the CTO and a say in frontend standards from day one
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Reference: WJ-766_22797033

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