Kima P.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I build production-grade browser extensions for Chrome / Edge / Firefox, using React or vanilla JS (JavaScript/TypeScript). I focus on clean architecture, performance, and security, so extensions stay stable at scale and remain maintainable as features grow. I’m currently working on a browser extension used by 3+ million users, which means I’m comfortable with real-world constraints like performance bottlenecks, edge cases across websites, and safe handling of permissions and user data. What I can help you with: - Manifest V3 extensions: service worker/background, content scripts, messaging - Extension UI: popup, options page, side panel, injected UI/overlays (React or vanilla) - Website integrations: DOM manipulation, automations, workflow helpers, reliable selectors - API + backend integrations: REST/GraphQL, auth flows, and lightweight Node/serverless microservices - Debugging & improvement: fixing flaky scripts, refactoring, performance tuning, adding features - Getting store-ready: I can help prepare builds and guide the Chrome Web Store submission process