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Senior Full-Stack Engineer - Browser Extension

Neo· R&D
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Hybrid (Tel Aviv)Full-timePosted 3w ago

About the role

Senior Full-Stack Engineer to own and build the Chrome extension core of Neo’s security platform, with responsibilities spanning browser policy enforcement, backend/web app features, and cross-browser extension development.

Responsibilities

  • 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
  • Build in-browser security capabilities: DOM inspection and manipulation, user-facing warning and blocking flows, and event capture
  • Keep the extension fast and invisible. Minimize page-load impact, memory footprint, and CPU usage on every site
  • Drive support for other Chromium browsers (Edge, Brave) and, over time, Firefox and Safari WebExtensions
  • Manage Chrome extension publishing, versioning, and staged rollouts
  • Build and extend the APIs and services that power the extension, including configuration delivery, real-time updates
  • Build features in our React/TypeScript web app that let customers configure the product, review events, and manage deployments

Qualifications

  • 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.

Skills

Required:TypeScript/JavaScriptBrowser fundamentalsManifest V3 / Chrome extensionReactBackend APIs & servicesDebugging toolsSecurity mindset
Last updated Sep 28, 2026. Interested? Apply on the company site.
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About Neo

Neo | Agentic Software Control

See every app and control every action in real time. Neo prevents agentic threats across devices, browsers, identities, and applications.

Real-Time ProtectionAgentic EnterpriseSecurityPlatformEndpoint ControlNeoverse
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