Custom Site-Aware Chrome Extension

I’m looking for a developer who can build a Chrome extension that springs to life only when I’m on one particular website (details provided after NDA). Once active, it will read selected information on the page, perform a small set of automated actions, and update the interface in real time so the workflow on that site becomes much faster and less error-prone.

Key points you should know up front
• The extension must recognise the target domain, inject a content script, and exchange messages with a background service worker (Manifest V3).
• All interaction stays inside that site—no cross-tracking or global data collection is required.
• Clean, well-commented JavaScript/TypeScript and standard Chrome APIs are preferred so maintenance is simple.

Deliverables
1. Production-ready .zip or .crx packaged for direct install
2. Full source code with build instructions (npm, webpack/rollup or similar)
3. One-page setup & user guide
4. Brief hand-off call or video walkthrough

Acceptance criteria
• When I navigate to the target domain, the extension icon activates and the content script can both read and modify specific page elements as discussed.
• No errors appear in the DevTools console under normal use.
• Passes Chrome Web Store policy checks for Manifest V3.

If you have recent experience creating extensions that interact tightly with a website’s DOM or its public API, I’d love to see examples and hear how you’d approach this build.