Senior Full-Stack Engineer - Browser Extension
Join Neo Security as a Senior Full-Stack Engineer to develop a Chrome extension for enterprise security solutions.
Posted by employer 3 days ago
First seen on Joblaze 1 day ago
Last verified on the company career page 1 day ago
Skills & Technologies
What you'll build
- Architect, build, and maintain Chrome extension
- Own features from design through production monitoring
- Debug problems across the browser, OS, and backend
- Build in-browser security capabilities
- Manage Chrome extension publishing and versioning
Must have
- 5+ years of professional software development experience
- Expert TypeScript/JavaScript knowledge
- Production experience with Manifest V3
- Strong React experience
- Backend experience building APIs and services
Nice to have
- Experience building security products
- Familiarity with Chromium internals
- Cross-browser extension development
Requirements
- Experience
- 5+ years
Not disclosed in this posting: compensation, work arrangement, visa sponsorship.
Joblaze summary
The Senior Full-Stack Engineer at Neo Security focuses on developing and maintaining a Chrome extension that enforces security policies in real time across managed endpoints. This role requires expertise in TypeScript and JavaScript, along with a solid understanding of browser fundamentals and experience with React for frontend development. Ideal candidates have over five years of software development experience, particularly in building security products, and possess strong debugging skills. The position involves shaping the technical direction of the product while ensuring optimal performance and minimal impact on user experience.
Joblaze insights
- Listed yesterday — first seen on Joblaze September 29, 2026. Last confirmed on Neo Security's careers page September 29, 2026.
Quick facts
- How much experience is required?
- At least 5 years of relevant experience for this Senior Full-Stack Engineer - Browser Extension role.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: AWS, Chrome Extensions APIs, Go, JavaScript, Next.js, Node.js.
- What seniority level is this role?
- Neo Security targets senior candidates for this position.
- Is this full-time or contract?
- Full-time for this Senior Full-Stack Engineer - Browser Extension role at Neo Security.
From the original posting
About the Role
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.
- 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.
Tech You'll Work With
- Extension: TypeScript, Chrome Extensions APIs (Manifest V3, service workers, content scripts, native messaging)
- Frontend: React, Next.js
- Backend: [Node.js/TypeScript, Go, or similar], Postgres, EventBridge, SQS, S3, AWS Lambda, Pulumi
- Infrastructure: AWS
What You'll Bring
- 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.
Bonus:
- Experience building security products: DLP, SSE/SWG, enterprise browser.
- Familiarity with Chromium internals or browser source code.
- Cross-browser extension development (Firefox, Safari).
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