Browser / Kernel Engineer

Role Description

We are looking for the browser person. The one who patches Chromium and Firefox at the C++ source level, maintains our in-house patched-browser cloud, and owns the fingerprint surface that makes our automation indistinguishable from a real user on a real machine. The goal is simple and uncompromising: we own our stealth browser instead of renting one.

Qualifications

• Strong C++.
• Hacker mindset.
• Browser internals.
• Persistent.
• Great writer.
• Self-directed.
• Fluent in English, written and spoken.

Requirements

• Shipped or contributed to a browser-engine patch, fork, or stealth tool (Chromium, Firefox, camoufox, or similar).
• Understanding of browser fingerprinting and how to spoof it at the implementation level.
• Hands-on with CDP and headless or headful automation internals.
• Familiarity with the Chromium or Firefox build infrastructure and large-scale patch management.
• TLS and fingerprinting awareness.
• Experience running browsers at scale.
• Contributions to open-source stealth or browser tooling.

Benefits

• Fully Remote. Work from anywhere.
• Equity share. Own a piece of what you're building.
• Profit sharing. When we win, you win.
• Learn fast. Touch every part of a growing SaaS. Wear multiple hats. Ship real products to real customers.
• Annual team retreats (last one in Spain).