Staff Engineer - Stealth Security Startup - $200k-$350k + equity

🔒 Staff Engineer - Stealth Security Startup (SF) San Francisco · Onsite-first · $200k-$350k + equityThis is one of the strongest founding team opportunities I've come across in the San Francisco market right now. I'm working exclusively with a stealth security startup doing something that hasn't been done before - context-aware AI security agents built for a world where engineers are shipping AI-generated code straight to production.The founders are the real deal. They previously built and sold a company in one of the largest European acquisitions in the security space, then stayed on to scale that platform past $5b in revenue. Before that, the lead founder ran Apple's red team, hacking products and designing the protections that go on hundreds of millions of devices. They have since advised and invested in multiple successful tech companies, and now they're building again. Bigger.Backed by a significant stealth pre-seed and deeply embedded in the YC ecosystem, this team doesn't need to prove themselves. They've already done it. Now they're doing it again with a harder problem, a stronger team, and a longer runway. 🚀They are searching for a Staff Engineer, one of the first 10 people, to own the core backend and graph infrastructure that the entire security agent platform is built on. A rare seat at the founding table with serious founders.💰 $200k-$350k + equity 🌉 San Francisco, onsite-first, stunning new office from September ⚡ 2-3 stage interview process, 7 day turnaround 👥 ~8 people today, deliberately capped around 15What you'll work on:- Build and own the backend graph infrastructure, traversal, resolution, and cloud security data layers - Design the agentic platform running on top of the graph, backend architecture for business-context-aware AI security agents - Work directly with the founders and a small, elite team to define product and platform from zero - Ship production-grade, low-level systems where reliability and security are absolute table stakesWho we're looking for:- AI-native engineers who have shipped real agent systems, orchestration layers, production AI backends, eval infrastructure - Deep backend, distributed systems, and low-level platform engineering, not just familiarity, genuine craft - Has built graph infrastructure, traversal systems, or resolution architecture at scale - Security, cloud infra, or developer tooling background, the closer the better - Based in the Bay Area, ready for an onsite-first culture 🙌 - A builder and hacker at heart, motivated by the difficulty of the problem, the quality of the team, and the chance to do defining workThe team comes out of stealth soon. The window to join at founding stage is genuinely short. If you've been waiting for the right team solving the right problem with an unbelievably high performing + rich culture, this is worth a conversation. 🚨 Candidates must be based in the US and eligible to work without visa sponsorship to apply.