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🥝 Principal Vulnerability Engineer

Xact Placements | Reading, United Kingdom | Posted June 04, 2026

Principal Vulnerability Engineer

Job Description

| High-Growth Cybersecurity Scale-Up | Fully Remote (UK)

  • Remote – UK Based

  • Up to £110,000 + benefits

  • Permanent – Full time

    • Got a track record of 0-day discoveries, public CVEs, and a reputation for finding bugs that actually move the needle? 🚀


    Join a research-driven, venture-backed cybersecurity scale-up trusted by Fortune 500 enterprises and critical infrastructure providers. Recognised by Gartner, $29M funded, and scaling fast worldwide.


    As a Principal Vulnerability Engineer, you’ll own the full vulnerability lifecycle – from discovery, through detection, to deployment – building production-grade tooling and pioneering LLM-powered offensive security workflows.


    What you’ll be doing:

  • Leading deep research across 0-days and n-days, with patch diffing across source-available and binary-only targets

  • Designing tooling for automated vulnerability discovery, exploit valid...

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