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Open positions
Founding Software Engineer
Founding Software Engineer at Helicon, a defense/aerospace advanced-materials startup, building Argos — an in-house operating system for a composite manufacturing facility covering supply chain, pricing, inventory, robotics orchestration, AI post-training/simulation and a 24/7 digital twin. Full-stack TypeScript with Python or Go backends, on-site in Los Angeles.
Full-Stack Engineer
Full-stack engineer at Helium, an AI startup whose SDK auto-generates and tests product experiences (onboarding/paywalls) for consumer apps like Calm. You'll ship Next.js frontend features and scalable Go backends serving millions daily, design data/ML training infrastructure, and own features end to end in-office in San Francisco Mon-Fri. Salary $150k-$250k plus 0.5-1.5% equity.
Member of Technical Staff
At Bluejay (voice AI agent platform), a Member of Technical Staff builds simulation, analysis and evaluation systems for conversational AI, plus resilient AWS infrastructure handling millions of real-time calls, with full-stack ownership and on-site customer work. Stack: Python, FastAPI, Supabase, AWS, LLM and voice tooling; 5 days/week in San Francisco.
Member of Technical Staff, Head of Quality
Plato, an applied research lab building simulated environments and data infrastructure for training specialized AI agents, is hiring a hands-on Head of Quality in San Francisco. They review datasets and environment outputs, build automated QA/evaluation systems that catch reward hacking and broken verifiers, and hire and lead the QA team.