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SearchApi

Browser / Kernel Engineer

SearchApi

Browser / Kernel Engineer maintaining in-house browser automation for stealth technology. Responsibilities include patching Chromium/Firefox and fixing browser fingerprinting signals.

Posted 6/22/2026full-timeRemote • 🇱🇹 LithuaniaMid-LevelSeniorWebsite

Tech Stack

Tools & technologies
Cloud

About the role

Key responsibilities & impact
  • Own the browser stack. Maintain and evolve our in-house patched-browser cloud and its per-OS fingerprint profiles, kept continuously rebased onto new stable Chromium without regressing the evasions.
  • Patch the engine. Fix navigator, WebGL, canvas, fonts, and Client Hints at the implementation level so spoofed values look native, not bolted on.
  • Kill CDP leaks. Find and eliminate the signals that give automation away, without breaking normal control.
  • Get the details right. Align geolocation, timezone, and locale so the whole picture is consistent.
  • Chase detection. When something starts getting flagged, figure out why at the source and fix it.
  • Build the tooling. Write the harnesses that test and validate evasions so regressions get caught before customers do.
  • You define the work. We don't hand you a ticket queue. You tell us what's getting detected, what's brittle, and what to fix next.

Requirements

What you’ll need
  • Strong C++.
  • Hacker mindset.
  • Browser internals.
  • Persistent.
  • Great writer.
  • Self-directed.
  • Fluent in English, written and spoken.
  • 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 HTTP fingerprinting awareness.
  • Experience running browsers at scale.
  • Contributions to open-source stealth or browser tooling.

Benefits

Comp & perks
  • 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).

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
C++browser internalsbrowser fingerprintingCDPheadless automationheadful automationChromium build infrastructureFirefox build infrastructureTLS fingerprintingHTTP fingerprinting
Soft Skills
hacker mindsetpersistentgreat writerself-directedfluent in English