Founding Engineer

Benbase is on a mission to scale the trusted benefits advisor. As a Founding Engineer, you’ll architect and build our AI agent platform. You’ll work across the stack—from thinking how our agents interact human-in-loop to optimizing back-end infrastructure and model accuracy—ensuring speed, scalability, and impact. We are seeking builders who thrive on speed, iteration, and impact. What You’ll Do Build and ship our AI agents platform to help automate our brokerage's core internal workflows Develop and refine agentic middleware including prompt engineering and tool calls using Ruby and Python Design and optimize agentic automations for performance, security, and reliability Work closely with our brokerage team to translate ideas from prototypes to production-ready automations Own key technical decisions, ensuring maintainability and long-term impact Who You Are You love to code Have a strong portfolio or GitHub showcasing full-stack development expertise Proficient in at least two major languages (Ruby/Python/Typescript) and modern front-end/back-end frameworks Experience designing and working with Large Language Models, Embeddings and Prompt Engineering Deep understanding of debugging, performance optimization, multi-stage deployment, and best practices Comfortable in a fast-moving, high-performance startup environment The ideal candidate is based in San Francisco or New York and can be hybrid a few days a week, but we are open to a fully remote hire.