Usekernel
Browser Security Engineer
- Confirmed live in the last 24 hours
- $225k–$250k
- Mid level
- Full-time
- On-site · San Francisco
- Added 1 month ago
About this role
Kernel is seeking a Browser Security Engineer to strengthen and enhance their Chromium-based browser runtime for AI agents. You'll focus on security and performance within microVM environments, collaborating with infrastructure engineers to ensure secure and efficient operation at scale. This role involves debugging, implementing network isolation, and building internal tooling to protect against vulnerabilities.
What you'll do
- Debug, patch, and optimize Chromium builds.
- Implement and maintain network isolation and proxy routing.
- Collaborate on unikernel-based isolation and kernel security policies.
- Build internal tooling for binary analysis and crash triage.
- Support secure supply chain and reproducible builds.
- Maintain browser image security
What they're looking for
- Chromium internals
- Browser sandboxes
- Linux kernel
- MicroVMs (Firecracker, Cloud-Hypervisor, etc.)
- Debugging (strace, gdb, perf)
- Networking fundamentals (DNS, TCP/IP, TLS)
- Security engineering
- Binary analysis
Benefits
- Industry-competitive salary
- Above market equity
- Premium medical, dental, and dependent coverage
- Async work environment
- Daily lunches
- Unlimited PTO
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Usekernel
Likely interview questions
- Describe a challenging Chromium bug you debugged and how you approached it.
- Explain your experience with microVM technology and its security benefits.