Senior Full-Stack Engineer

We're looking for a Senior Full-Stack Engineer to join our engineering team and take a key role in building and evolving Neo's Chrome extension, a core part of our security platform that operates in the browser in real time.

Neo is the Agentic Software Control company built for modern AI-driven enterprises.

The Neo platform gives SecOps teams the inventory, intelligence, attribution, and policy control required to govern agentic software across AI agents, AI-enabled applications, browsers, identities, and traditional software as enterprise applications become autonomous.

You'll work on challenging browser-based security capabilities, including real-time policy enforcement, while also developing backend services and features across our React/TypeScript web application.

This role is ideal for a strong engineer who enjoys solving complex technical challenges, diving into new technologies, and owning features end-to-end.

What You'll Do

• Architect, build, and maintain our Chrome extension, including real-time security capabilities and policy enforcement.

• Develop browser-based functionality, including DOM interactions, event capture, and user-facing security flows.

• Design, develop, and own features end-to-end across our browser extension, frontend, and backend.

• Build and maintain scalable backend services and APIs that power our security platform.

• Develop features in our React/TypeScript web application.

• Solve complex technical challenges across browsers, operating systems, and backend services.

• Build performance-sensitive components while minimizing impact on browser performance and user experience.

• Take ownership from technical design through implementation, deployment, and production monitoring.

• Contribute to architectural decisions and continuously improve code quality, testing, and engineering practices.

Tech You'll Work With

• Browser Technologies: TypeScript, Chrome Extensions APIs, Manifest V3, service workers, content scripts

• Frontend: React, Next.js

• Backend: Node.js, TypeScript, Go, or similar technologies

• Infrastructure: AWS, Postgres, EventBridge, SQS, S3, AWS Lambda, Pulumi

What You'll Bring

• 5+ years of professional software development experience.

• Strong proficiency in TypeScript and JavaScript.

• Solid hands-on experience with React and modern frontend development.

• Experience building and maintaining backend services and APIs.

• Strong understanding of web technologies, browser fundamentals, and modern application architecture.

• Excellent debugging, problem-solving, and analytical skills.

• Ability to independently design and deliver complex technical solutions.

• Strong technical curiosity, a research-oriented mindset, and the ability to quickly learn new technologies.

• A proactive, ownership-driven approach and a passion for building high-quality software.

Bonus Points

• Experience developing Chrome extensions or browser-based applications.

• Familiarity with Chrome Extensions APIs, Manifest V3, or Chromium internals.

• Experience with browser security, web security, or endpoint technologies.

• Background in cybersecurity or security products such as DLP, SSE/SWG, or enterprise browsers.

• Experience building performance-sensitive or real-time applications.

• Familiarity with AWS and cloud infrastructure.