Founding Engineer ($180k-$270k + Equity) at Stealth AI-native Cybersecurity Startup

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Job Title Founding Engineer Salary $180k-$270k + Equity Company Description Stealth cybersecurity startup automating enterprise vulnerability management through AI agents Job Description Join a high-caliber team of five in San Francisco as the third engineer. You will build an AI-native platform that replaces legacy security stacks by automating vulnerability research, verification, and remediation. You'll develop autonomous agents that simulate CVEs and manage complex entity graphs to protect organizations at machine speed. Location San Francisco, USA Why this role is remarkable Ship production-grade autonomous systems that go beyond prototypes to drive real-world remediation for Fortune 500 organizations. Join an elite founding team in a 5-days-a-week in-person culture located in a premium SF office overlooking the Ferry Building. Significant ownership and equity (40-80 bps) in a company tackling the massive $20B+ vulnerability management market with a live AI brain. What You Will Do Architect and scale the distributed scanning runtime and CVE reproduction labs using sandboxed research agents. Build a live entity graph that maps messy enterprise asset data across cloud providers and internal systems to business context. Design auditable provenance systems that ensure agent-led decisions meet the highest standards of engineering taste and quality. The ideal candidate 3-6 years of experience building autonomous AI agents with multi-step reasoning and tool use in production environments. Expert-level proficiency in distributed compute, workflow pipelines, and managing high-scale data infrastructure. A high bar for engineering quality and an ownership mentality suited for a fast-moving, early-stage founding team. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. How does this work? Jack's an AI agent for job searching and career coaching. He works for you. Jill is the AI recruiter working for the company. She recruits from Jack's network. If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives. We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.