Browser / Kernel Engineer
SearchApi · Remote · Remote - Lithuania · Remote - North Macedonia · Remote - Canada · Remote - Israel · Remote · Remote - Croatia · Remote - Argentina · Remote - Italy · Remote - Sweden · Remote - Luxembourg · Remote - Portugal · Remote - Latvia · Remote - Hong Kong ·
COMPENSATION
€•• – ••k
Listed on the employer's job board (Ashby)
- Fully remote
- C++ browser internals
- Chromium & Firefox
- Bootstrapped team
- Equity + profit share
You will own the browser stack, maintaining an in-house patched-browser cloud and evolving per-OS fingerprint profiles. The work requires continuous rebasing onto stable Chromium releases while preserving evasion capabilities without regression.
Instead of relying on JavaScript spoofing, you will fix navigator, WebGL, canvas, fonts, and Client Hints directly in the engine implementation. Your goal is to eliminate detection signals and ensure consistent geolocation, timezone, and locale data.
What you'll do
- Maintain and evolve the in-house patched-browser cloud
- Rebase patches continuously onto new stable Chromium versions
- Fix fingerprinting vectors at the C++ implementation level
- Eliminate Chrome DevTools Protocol leaks that reveal automation
- Align geolocation, timezone, and locale for consistency
- Investigate and resolve new detection flags at the source
- Build harnesses to test and validate evasion techniques
What you'll need
- Strong C++ skills for large, unfamiliar codebases
- Experience shipping or contributing to browser engine patches
- Deep understanding of browser fingerprinting and spoofing
- Hands-on experience with CDP and automation internals
- Familiarity with Chromium or Firefox build infrastructure
- Ability to document changes and reasoning clearly
- Fluent in written and spoken English
Nice to have
- Awareness of TLS and HTTP fingerprinting
- Experience running browsers at scale
- Contributions to open-source stealth or browser tooling
- Familiarity with camoufox, rebrowser-patches, or similar
Stack
- Chromium
- Firefox
- C++
- gn
- ninja
- Chrome DevTools Protocol
- Ruby
- Node.js
- Python
- AWS
How you'll work
- Fully remote
- Work from anywhere
- Use of AI tools like Cursor and Claude
What you get
- Equity share
- Profit sharing
- Annual team retreats
- Bootstrapped and profitable company
Hiring process
- 45-minute interview call
- Take-home challenge
- 60-minute technical interview
- 30-minute team meeting
- Reference check and offer