AI Agent Engineer

We're looking for an AI Engineer to build the LLM-powered systems at the core of our product. Our product runs on agents. They decide what work needs to happen for each customer, do a lot of that work autonomously, check the quality of what got done, and assist the people on our team who handle the rest. You'll own that layer. Concretely, you'll build agentic systems that carry multi-step work from start to finish, the evaluation infrastructure that tells us whether they're any good, the retrieval layer that gives them accurate knowledge to reason over, and the AI features our internal users rely on every day. The surface is wide and still being defined, so there's a lot of room to shape what gets built. You'll work directly with the founders. We don't have a strong opinion about which corner of AI engineering you came from; agents, RAG, evals, fine-tuning, and retrieval all translate. What matters is that you're genuinely fluent with modern LLMs, that you treat them as a backend you can build reliable systems on, and that you've shipped something real to real users.

Responsibilities:

• Build agents that do real work. Design and ship LLM-powered systems that take a multi-step task and see it through, deciding what to do, taking action across our systems and third parties, and knowing when to hand off to a human.
• Own quality and evaluation. Build the infrastructure that measures how well our AI performs, catches regressions before users feel them, and turns production signals into better prompts, retrieval, and models. Make quality a number we can move, not a vibe.
• Build the knowledge layer. Design the retrieval systems our agents reason over and solve the harder half: keeping that knowledge accurate, versioned, and fresh as the underlying sources change.
• Build AI into the product. Ship copilots and assistive features that make our users meaningfully faster, with clear judgment about when the model should act and when it should ask.
• Close the loop on real usage. Deploy to production, watch how the systems behave with real users, and improve from what actually happens in days, not quarters.
• Shape the technical roadmap. Work with the founders on what to build next. Bring a sharp sense of what current models can and can't do, and help us make smart bets on where the technology is heading.
• Lay the foundation for scale. Make architectural decisions that hold up as usage grows by orders of magnitude, and build with the next engineer in mind.

Requirements:

• You've built LLM-powered systems or agents and shipped them to production, not demos, but systems handling real usage by real people.
• Strong overall AI fluency.
• You can reason concretely about prompting, tool use, context management, retrieval, latency, cost, and failure modes.
• You've built evaluation into your work, designed metrics, captured signal from production, and used it to systematically improve quality.
• You've monitored and debugged AI systems in production, and you know what it takes to keep them reliable when real people depend on them.
• Solid software engineering fundamentals. You write code others can maintain, and you own what you ship.
• You're comfortable with ambiguity. The playbook doesn't exist yet, and you're excited to build it.

Nice to Have:

• Depth in retrieval systems: RAG, vector databases, and keeping a knowledge corpus fresh over time.
• Experience with feedback-driven improvement loops for LLM systems (RLHF, reward modeling, or similar).
• Experience in healthcare or another regulated industry (HIPAA, PII/PHI handling).
• Python and TypeScript; our stack is FastAPI, Next.js, and Postgres.

Execution:

• Beyond technical skills, we're looking for someone who embodies the attributes that make great engineers at an early-stage company:
• Proactive. You move quickly and take a forceful stand without being abrasive.
• You act without being told what to do and bring new ideas to the company.
• Analytically sharp. You structure and process qualitative or quantitative data and draw penetrating insights.
• You learn quickly and absorb new information with ease. High standards with attention to detail.
• You expect nothing short of the best from yourself and your team. You don't let important details slip through the cracks or derail a project.
• Passionate and open.
• You exhibit enthusiasm and a can-do attitude in your work. You solicit feedback often and react calmly to criticism or negative feedback. Insist on the Highest Standards. We hold ourselves and our teams to nothing short of the best in clinical quality, in operational execution, in how we show up for patients and partners. We raise the bar continuously.
• Question Everything, Unapologetically. We reason from first principles, not precedent.