
Autonomous security testing for AI systems
What they do: Autonomous security testing for web apps, APIs, infrastructure, and AI systems
Headquarters: San Francisco, California
Stage & size: Seed; ~5 employees
Founders: Rene Brandel (CEO) and Ian Saultz (CTO)
Application and AI system security (vulnerability discovery, verification, and agentic penetration testing)
2025
Cybersecurity
Seed round closed mid‑2025; reported participation in Y Combinator support program earlier in 2025
“Y Combinator participation reported in 2025”
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We're looking for a Customer Success Engineer who is obsessed with making our customers’ software secure. You will be the technical bridge between our customers and our security and engineering teams. This isn't a traditional customer success role where you just close tickets. You are a security success engineer, a trusted advisor for all things application security. You'll manage the onboarding lifecycle, answer deep technical questions, and ensure our customers are getting maximum value from Casco.
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