Browser extensions are the fastest way to embed AI copilots, CRM sidebars, sales intelligence overlays, and automated metadata harvesters directly into your users' existing web workflows. However, Google's transition to Chrome Extension Manifest V3 (MV3) introduced ephemeral background service workers, strict Content Security Policies (CSP), and tighter Chrome Web Store review requirements.
If you are looking to hire a freelance Chrome Extension (Manifest V3) and browser automation programmer, I am Aldian Fazrihady—a senior full stack engineer who builds collision-free MV3 extensions and AI sidebars.
Production Chrome Extension Engineering
1. Collision-Free Shadow DOM & Sandboxed Iframe Overlays
Injecting raw React components into third-party websites causes CSS style bleed and Z-index wars. I isolate extension overlays inside Shadow DOM roots and sandboxed iframes (Sandboxed Extension Overlays in Chrome Manifest V3) so your UI looks pixel-perfect on every host page.
2. Type-Safe IPC Between Content Scripts, Side Panels & Service Workers
Because MV3 background service workers terminate when idle, I design persistent state synchronization using `chrome.storage.session`, Offscreen Documents (for audio/DOM parsing), and schema-validated message passing (IPC in Chrome Extensions).
3. Structured DOM & OpenGraph Metadata Harvesting
I build resilient DOM parsers (Automated Meta Scraping: Harvesting OpenGraph & Twitter Headers) that extract clean page context for AI summarization, lead enrichment, or bookmarking.