Frontend / Chrome Extension Developer (React + TypeScript) (Remote)

Position Title : Frontend / Chrome Extension Developer (React + TypeScript)Experience : 3+ yearsLocation : RemoteJob Role Summary :Build and ship production-ready Chrome extensions that inject UI into existing web apps. Own content scripts, DOM integration, performance, and accessibility (WCAG 2.1 AA).Mandatory Skills :React, TypeScript, Chrome Extensions (MV3), Content Scripts, DOM Injection, MutationObserver, TailwindCSS/CSS Modules, Accessibility (WCAG 2.1 AA).Key Responsibilities :Develop Chrome extensions using React + TypeScript.Inject and manage UI components within third-party web app DOMs.Write and maintain content scripts; handle dynamic pages via MutationObserver.Implement clean, responsive styling with TailwindCSS or CSS Modules.Ensure accessibility (WCAG 2.1 AA), keyboard navigation, and ARIA semantics.Integrate with APIs, manage extension permissions, storage, and messaging.Optimize performance, handle edge cases across sites, and write basic tests.Required Skills :Strong React + TypeScript in production.Chrome Extension architecture: manifest v3, content/background scripts, messaging, permissions.DOM manipulation and safe UI injection strategies.MutationObserver, event delegation, handling SPA route changes.TailwindCSS or CSS Modules; solid CSS fundamentals.Accessibility (WCAG 2.1 AA) and cross-browser compatibility (Chromium/Firefox optional).Familiarity with build tooling (Vite/Webpack), linting, and Git.Nice-to-Have :Experience with service workers, storage (sync/local), and i18n.Testing with Jest/RTL/Playwright.Security basics for extensions (CSP, sandboxing).