Founding Engineer (In-Person) at Raycaster

Maintain the core: agent orchestration + document pipelines + versioning Ship end-to-end: Go backend + React UI (you’ll touch everything) Make it reliable: evals, guardrails, observability (no demo-only systems) Turn customer pain into product fast (you’ll talk to users) You’ve built and shipped real systems (Go/Rust preferred). You can own a subsystem. You’re strong on fundamentals: distributed systems, concurrency, performance You’ve shipped AI/LLM features in production , and you learn new things insanely fast and can prove it You have high attention to detail + high standards You have product taste: you notice UX/copy/states, not just code If you don’t know something, you figure it out in hours - not weeks Nice to have: interest in biotech, healthtech, or any regulated industry We’re working on agent / domain-specific evals, new embeddings and indexing benchmarks, and may publish benchmarks / deep dives and submit to conferences / journals. If you want to help set standards for this space, there’s room. Logistics NYC, in-person, 5 days/week (we build better together) Competitive base + founder-level equity (2–10%) Apply: send (1) GitHub / past systems you built, and (2) one par