
XBOW brings AI to offensive security, augmenting the work of bug hunters and security researchers. It autonomously finds, exploits and reports vulnerabilities in web applications. It is the first…

XBOW brings AI to offensive security, augmenting the work of bug hunters and security researchers. It autonomously finds, exploits and reports vulnerabilities in web applications. It is the first…
What they do: AI-powered autonomous offensive security platform that finds, exploits, and validates web-app vulnerabilities
HQ: Seattle, Washington
Employees: 34
Funding: $117M total (including $75M Series B)
Founded: 2024 (public product announcements in 2024)
Web application security / offensive security / automated penetration testing
2024
Computer and Network Security
$20M
$75M
Series B increased total funding to $117M according to company blog
“Investors include Sequoia Capital, Altimeter Capital, and angel/co-investor Nat Friedman”
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About XBOW Build the future of offensive security with XBOW. Attackers are already using AI to move faster than defenders can react—we’re creating the platform that puts security ahead in the arms race. Our AI-powered system autonomously discovers, validates, and even exploits vulnerabilities, giving organizations proof-backed results in hours instead of weeks.
Founded by Oege de Moor, creator of GitHub Copilot, and backed by Sequoia, Altimeter, and other leading investors, XBOW is applying cutting-edge AI to one of the world’s most urgent problems. In just over a year, our AI, built by a world-class AI team and legendary security researchers — has uncovered thousands of real-world zero-days across the software billions rely on, and achieved the #1 ranking on HackerOne’s global leaderboard.
We’re a team of builders, hackers, and researchers who thrive on solving problems others think are impossible. If you want to push the boundaries of AI, reshape how security is done, and join the group defining this new era of defense — we’d love to talk.
Your Role: Software Engineer - Platform / Core Infrastructure We’re looking for a Software Engineer - Platform / Core Infrastructure who’s passionate about building scalable systems and solving hard problems in ambiguous environments. In this role, you’ll design and implement the complex distributed infrastructure that powers our core AI engine and distributed analysis systems, enabling XBOW to run seamlessly across multiple cloud providers (AWS, Azure, OCI etc.) and contexts (SaaS, on prem).
This is a role for someone who sees infrastructure as a product, loves clean abstractions, and knows how to dig into performance issues across layers. You’ll join a high-trust, high-velocity team where your work will have an immediate impact on both developer experience and product performance. If you like being at the intersection of deep tech and real-world impact, you’ll feel right at home.
What You Will Do
Essential Skills and qualifications
Advantageous
What We Offer
What Else You Should Know
Location: Remote in the US or EMEA (all team members are remote but we meet regularly and you’re supported to travel to collaborate with colleagues in person)
Contract: Full-time.
Hiring Process:
45-min introductory chat with our Talent team.
45 minutes with an Engineering Lead.
We aren't focused on seniority titles at XBOW—so if you’re worried about “leveling,” don’t be. We care a lot more about mission fit, capability, and impact than what’s on your LinkedIn headline.
We believe in people who are driven by curiosity and a willingness to learn. Even if you don't check every box, we encourage you to apply if you're excited about the role and our mission.
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2-3 hour pair programming session with two members from the team.
30-min final wrap-up call with an Engineering Lead.