Need a browser extension but not sure how to fit a real interface into that tiny popup window? That's exactly the kind of constraint I like working with.
I'm a frontend developer with 2+ years of experience and 15+ shipped projects, building interfaces for crypto and trading products as well as regular web apps — using React, TypeScript, and the Chrome/Firefox extension APIs.
What I can build:
- Price & portfolio tracker popups with live on-chain/market data
- Productivity & utility extensions (clippers, form-fillers, note tools)
- On-page tools — content-script overlays, scrapers, page injectors
- DevTools panel extensions
- Extension + companion web dashboard, sharing the same backend
- Note: I build the interface layer only — wallet connection & signing is handled via your existing provider (MetaMask, WalletConnect, etc.), not custom key storage
What I bring:
- ✅ Manifest V3 architecture — popup, background service worker, content scripts wired up cleanly
- ✅ Clean UI that actually fits inside popup size constraints, not just a squeezed webpage
- ✅ Cross-browser support — Chrome, Firefox, Edge from one codebase (WebExtension API)
- ✅ Store-ready packaging — icons, permissions, manifest set up for Chrome Web Store / Firefox Add-ons review
- ✅ Real-time data handling for anything live (prices, balances, notifications)
- ✅ Clean state management (Zustand) for session/user preferences
Tech Stack:
- React
- TypeScript
- Manifest V3
- Chrome Extension API
- WebExtension API
- Vite / CRXJS
- TailwindCSS
- Zustand
- Node.js
Check my portfolio for examples of my trading/dashboard UI work: https://askoportfolio.netlify.app
Send me your idea, mockups, or a reference extension, and I'll scope the build (and flag anything that won't pass store review) before you order.
