Founding Software Engineer

About the Role This is a founding-level engineering role at a seed-stage, YC-backed insurtech startup building AI agents that automate complex claims operations for insurance carriers and TPAs. You'll take true end-to-end ownership of the core platform — from eval pipelines and model reliability to document parsing and agent execution infrastructure — on a small, high-velocity team where your architectural decisions shape the product directly. What You'll Do Own entire platform components end-to-end, including evaluation pipelines, model reliability, document parsing, and agent execution infrastructure. Build and maintain reliability systems: retries, circuit breakers, failover, observability, and canary deployments. Design and ship an eval platform that catches regressions before customers encounter them, including per-run evals and automated regression detection. Collaborate closely with forward-deployed engineers to rapidly spec, build, and ship solutions driven by real customer pain points. Shape developer platform tooling, CI/CD workflows, and coding agent integrations to increase team velocity. What We're Looking For 4+ years of software engineering experience, with 3+ years owning a core platform component end-to-end at a VC-backed startup with measurable business outcomes. TypeScript and SQL as primary production languages — must be clearly evidenced on resume or public profile. Hands-on AWS experience in a production environment; familiarity with GCP is a plus. Proven backend expertise: REST APIs, PostgreSQL, vector databases, Docker, and system architecture. Experience in a regulated or security-sensitive domain (insurtech, fintech, or healthtech) where auditability and traceability were hard requirements. A public engineering artifact (GitHub repository, personal technical site, or published technical content) demonstrating genuine interest beyond day-to-day employment. Technical degree (Computer Science, Engineering, or equivalent). Nice to have: experience shipping AI/LLM agent infrastructure (tool orchestration, eval pipelines, session lifecycle); background in voice AI, insurance platforms, or fintech; product engineering or PM experience; early-stage startup or founding experience. US work authorization required; visa sponsorship is not available. Compensation & Benefits Salary: $165,000 – $270,000 USD annually Equity participation expected at founding-engineer level Visa sponsorship: not available Location On-site in Los Angeles, CA (also open to New York, NY or San Francisco, CA). Remote work is not available for this role.