Principal AI Architect for Production-Grade Agents & RAG

Harnham in San Francisco seeks a senior technical leader to shape the architecture of AI agents and data infrastructure. You will define how multi-step agents, RAG pipelines, and knowledge retrieval systems are designed, built, and evaluated across the platform. You will own the AI coding capability from prompts to validation, mentor engineers, and drive production-grade decisions as the company scales toward its next funding round.