Hiring: Software Engineer, Agents (Foundation Agents) Company: Fieldguide Location: San Francisco, CA Job Posted Time: 2026-09-16 05:02:12 Target Skills & Keywords : HBase, LLM, Rust About the job Required Skills: •The Foundation Agents team stewards the long-horizon agents powering the Fieldguide AI platform. We work at the frontier of AI product development: agent knowledge, evaluations, and improving quality and reliability at scale. If you're excited by long-horizon agents that do real-world work, this is the team for you. •What You’ll Own •Build and maintain agent knowledge and evaluation infrastructure for Fieldguide's long-horizon agents •Build our next generation of agents at Fieldguide, solving increasingly complex customer use cases •Perform error analysis on agent behavior and help turn findings into concrete quality improvements •Build backend systems that support agent execution, evaluation, and monitoring •Partner with senior engineers on the team to execute the platform's reliability and quality roadmap Qualifications: •You've built AI products, not just called an LLM API •You're curious about evals and error analysis. You want to understand why an agent failed, not just that it did •You're comfortable in the backend, with a bias toward reliable systems •You're motivated by long-horizon agents that do real work in production Compensation: •Competitive compensation with equity •Comprehensive health and wellness benefits •Flexible time off and work schedules •Technology reimbursements •401(k) plan •Twice-yearly in-person offsites across the U.S. •Wellness benefits starting on your first day •Our Values •Fearless — Inspire and break down seemingly impossible walls •Fast — Launch fast with excellence; iterate to perfection Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!