Browser / Kernel Engineer - SearchApi

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.

About SearchApi

SearchApi is a real-time SERP API delivering structured data from 100+ search engines and sources, including Google Search, Google Shopping, Google Jobs, Bing, Baidu, YouTube, Amazon, and more. We're a lean, profitable, bootstrapped team with no VC pressure, no bloat—just people shipping real products to real customers.

🎯 Why Join Us?

• The deep end of the stack: Work below the browser in C++.
• Own the moat: The browser is one of our hardest advantages. Own it end to end.
• Real impact: Close detection gaps and watch thousands of customer requests succeed immediately.
• Rare problems: Solve challenges very few engineers touch.
• Bootstrapped and Profitable: We answer to customers, not investors.

💻 Tech Stack

• Chromium and Firefox source (C++)
• The Chromium build system (gn, ninja) and continuous rebasing
• Chrome DevTools Protocol (CDP)
• Per-OS fingerprint profiles (navigator, WebGL, canvas, audio, fonts, Client Hints)
• Open-source stealth ecosystem (camoufox, rebrowser-patches, patchright, nodriver, ungoogled-chromium)
• Ruby, Node.js, or Python for tooling, plus AWS

💪 What You'll Do

• Own the browser stack: Maintain and evolve our in-house patched-browser cloud and per-OS fingerprint profiles.
• Patch the engine: Fix navigator, WebGL, canvas, fonts, and Client Hints at the implementation level.
• Kill CDP leaks: Eliminate signals that give automation away.
• Get the details right: Align geolocation, timezone, and locale for consistency.
• Chase detection: Figure out why things get flagged at the source and fix them.
• Build the tooling: Write test harnesses and validation tools to catch regressions.

✨ About You

• Strong C++: Comfortable reading and modifying large, unfamiliar codebases and build systems.
• Hacker mindset: Enjoy reverse engineering and analyzing system leaks.
• Browser internals: Understand fingerprinting and engine-level spoofing.
• Persistent & self-directed: Highly motivated and resilient when facing complex blocks.
• Great writer: Document changes clearly so the team learns.

Required Experience:

• Shipped or contributed to a browser-engine patch, fork, or stealth tool (Chromium, Firefox, camoufox, etc.).
• Deep understanding of browser fingerprinting and engine-level spoofing.
• Hands-on with CDP and headless/headful automation internals.

🎁 What You Get

• Fully Remote work environment
• Equity share
• Profit sharing
• Annual team retreats