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.