MindFort AI (YC X25) | Backend Software Engineer, AI Researcher | Los Angeles, CA | Full-Time I'm a founding engineer at MindFort ( https://www.mindfort.ai ). We build autonomous AI security agents that pen test your software before attackers do: finding, exploiting, and patching vulnerabilities. Backed by YC, Soma Capital, etc. - Software Engineer (Backend + AI) | $150k–$250k + Equity: Architect and scale our agent systems from scratch. Python, Postgres, Docker, K8s, LangChain/LangGraph. Cybersecurity background a plus but not needed. - AI Researcher | $150k–$250k + equity: Own the research behind how our agents reason, plan, and chain exploits. LLM fine-tuning, RL, eval design, multi-agent systems. Security or red-teaming background a plus. Both roles include founding-level equity, 100% health coverage and unlimited PTO. More Info + Apply At: https://www.ycombinator.com/companies/mindfort