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Senior Full-Stack Engineer - Browser Extension at Neo · Trevo
We're looking for a Senior Full-Stack Engineer to join our engineering team.
You'll work on our Chrome extension, a core part of our security platform that runs on managed endpoints across the enterprise and operates in the browser in real time.
You'll own Neo's policy enforcement engine in the browser, the layer that turns security policies into real-time decisions on every page users visit.
Additionally, you'll also build features across our backend services and web app.
What you'll do
Architect, build, and maintain our Chrome extension
Own features from design through production monitoring.
Debug hard problems across the browser, the OS, and the backend.
Help shape the product's technical direction and raise the bar on code quality, testing, and release practices.
5+ years of professional software development experience in a relevant role
Expert TypeScript/JavaScript and deep knowledge of browser fundamentals: DOM, event loop, cookies, storage, origins, CSP, and the extension security model.
Production experience with Manifest V3, including service workers, content scripts, and extension messaging.
Strong React experience.
Backend experience building and operating APIs and services.
Strong debugging skills with Chrome DevTools, extension internals, and network tooling.
A security mindset. You think about how a malicious page or a curious user could break what you build.
Nice to have
Experience building security products: DLP, SSE/SWG, enterprise browser.
Familiarity with Chromium internals or browser source code.
Cross-browser extension development (Firefox, Safari).