Cyberhaven is looking for a Senior Software Engineer (Browser Extension) to build and enhance a critical component for our Data Loss Prevention and GenAI Security product. You will ensure the extension is secure, performant, and deeply integrated with our core platform.
What You'll Do
- Ship multiple features in the browser extension that improve visibility and security for customers.
- Implement robust automated end-to-end test coverage for critical workflows using Playwright.
- Establish strong collaboration with endpoint and backend teams to ensure smooth integration and consistent functionality.
- Contribute to improving performance and reliability across different browsers and environments.
What We're Looking For
- 5+ years of software engineering experience.
- Strong focus on JavaScript/TypeScript.
- Proven ability to build complex, performant logic in JavaScript/TypeScript.
- Experience writing end-to-end automated tests using Playwright or similar tools.
Nice to Have
- Browser extension experience or familiarity with browser extension APIs (Chrome Extensions, Manifest V3).
- Experience with frameworks like React, Angular, or Vue.
- Experience with security tools or SaaS products.
- Knowledge of Go (Golang) for backend integration.
- Excellent communication skills and ability to work cross-functionally with product, design, and backend teams.
Technical Stack
- JavaScript, TypeScript, Playwright
- Go (Golang), gRPC, REST APIs
- Docker, Kubernetes, CI/CD pipelines
Team & Environment
You will be a key member of the Browser Extension team, collaborating closely with endpoint and backend engineering groups.
Cyberhaven is committed to creating a diverse environment and is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.




