Senior Software Engineer, AI

Lassie is building the AI for every health practice. One million health practices spend $100B+ a year on admin staff, and still can't find enough people. Since COVID, offices are chronically short-staffed. Patients feel it every day in unanswered calls and confusing bills. We believe the doctor's office of the future is run by AI. An agent that runs the business, handles the administration, and becomes the interface patients use to interact with their doctor's office. Founded by Steijn Pelle and Frédéric Renken, we're bringing consumer product DNA to healthcare and reimagining how a million doctors and 300 million patients interact with the doctor's office. About the roleWe're hiring an engineer to build the AI agents that run doctor's offices. These are production systems handling real money and real patient data for thousands of practices. You'll work across the full stack: agent architectures, data pipelines, evals, and the infrastructure that makes it all reliable. You will be a great fit if you…Are excited to work with frontier modelsEngineer for reliability and correctness, not just functionalityDiagnose and resolve live production incidents with minimal disruptionAutomate away repetitive work and build tooling that makes engineering faster and saferDesign schemas and pipelines for large-scale datasets to power applied AIAre comfortable working across databases, caches, proxies, and job orchestration systemsSome things we've builtData pipelines processing $1B+ in insurance claimsSystems that eliminate thousands of hours of paperwork every monthA sync engine backed by encrypted SQLite in the browser, enabling 100ms experiences for healthcare payments and patient ledgersTechnology we useWe invest heavily in productivity. Engineers should have the best tools for the job and the freedom to choose them. Python (Django, Pydantic AI), Postgres, RedisTypeScript, React, TailwindGoogle Cloud Platform, VercelLinear, Slack, NotionJoining usTo start, you'll have a handful of conversations with our founders and team. If there is mutual excitement, we'll invite you for an in-office work trial where you'll collaborate on real problems we're solving and meet the team.#J-18808-Ljbffr