The board
- Where
- Los Altos
- Posted
- Sep 2
Los Altos, CA · Engineering · Internship · Semester/quarter or summer · Fully in-person
Company Overview
In July 2026, Cheiron announced an $8 million seed round led by Menlo Ventures, bringing total funding to $13 million to date, with the backing and strategic support of industry veterans including Moderna co-founder and MIT Institute Professor Robert Langer, former Pfizer Chief Medical Officer Freda Lewis-Hall, Chai Discovery co-founder and CEO Josh Meier, former Starbucks CEO Laxman Narasimhan, and former Apple AI chief John Giannandrea.
Cheiron is building the first AI-native operating system designed to represent an entire drug program as a single connected system.
What you'd do
- Design and implement new agent workflows with explicit state, task decomposition, tool use, and typed outputs.
- Build retrieval and citation paths that ground important outputs in source evidence.
- Add evaluation, tracing, retries, observability, and recovery behavior for multi-step execution.
- Build the backend services, data models, APIs, and focused product surfaces required to make the workflow useful.
- Test agent behavior against realistic success cases, failure cases, and incomplete evidence.
- Work directly with engineers and domain experts, demonstrate progress frequently, and make pragmatic scope decisions.
What they want
- Currently pursuing an undergraduate or master's degree in computer science, computer engineering, or a related technical field.
- Strong programming fundamentals and experience building a substantial software project, developer tool, backend system, or open-source contribution.
- Hands-on experience building a nontrivial agent, retrieval system, tool-using workflow, evaluation harness, or multi-step automation system.
- Clear personal ownership of the work: you can explain what you implemented, the decisions you made, and what you would improve.
- Ability to reason about state, failure modes, grounding, evaluation, and engineering tradeoffs—not only prompts and model selection.
- High agency and comfort working through ambiguous problems in a fast-moving environment.
- Ability to work fully in person in Los Altos. Semester or quarter interns must commit at least 20 hours per week; summer interns should be available full time.
About Cheiron · Engineering
We're looking for an Agent Engineering Intern to build new agent-driven workflows inside Cheiron's product. Cheiron's agents do more than generate an answer. They break complex objectives into steps, retrieve evidence, call tools, maintain state across long-running work, recover from failures, and produce structured results that a person can review and trust.