Backend Engineer, Applied Agents (Los Altos)

Build the agent execution and backend systems that turn complex regulatory work into reliable, reviewable software workflows. Cheiron is building the governed execution layer for post-approval regulatory submissions, with its deepest reasoning in CMC change.

You will own substantial parts of the product: how an agent decomposes work, retrieves evidence, calls tools, preserves state, recovers from failure and produces a result a regulatory professional can inspect. The work spans agent runtimes, backend services, retrieval, data pipelines and production operations. You will work directly with founders, engineers, domain experts and customers to turn ambiguous needs into useful capabilities.