Legion Health (YC S21) operates a psychiatric practice and is building the AI-native operations layer for mental health care. We focus on the operational backend: scheduling, intake, documentation, billing, and care coordination. These workflows—not diagnostics—are the main bottlenecks in mental health delivery.

We run our own clinic, so the systems you build ship directly into real patient care. Our agent infrastructure currently supports more than 2,000 patients with one human support lead.

We’re hiring a Founding Engineer (in-person, San Francisco). You’d work directly with the founders on:

event-driven backend systems (Node.js, TypeScript, Postgres/Supabase, AWS)

LLM agent tooling (tool use, retries, memory, context management)

internal operations tools for both humans and agents

state/coordination logic that represents a patient’s journey

HIPAA-compliant data and audit pipelines

We’re open to backend or full-stack/product engineers who think in systems and have owned real workflows end-to-end. Prior experience with LLMs is optional; interest is required.

Details: full-time, in-person SF, salary $130k–$180k, equity 0.1–0.6%.

Apply here: https://www.ycombinator.com/companies/legion-health/jobs/oc6...