Software Engineer, Agents (Foundation Agents)

Fieldguide is establishing a new state of trust for global commerce and capital markets by automating and streamlining the work of assurance and audit practitionersspecifically in cybersecurity privacy and financial audits. We build software for the people who enable trust between businesses.

Were based in San Francisco CA and backed by Goldman Sachs Alternatives Bessemer Venture Partners 8VC Floodgate Y Combinator and more. Over 50 of the top 100 accounting and consulting firms trust Fieldguide to power mission-critical work.

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 youre excited by long-horizon agents that do real-world work this is the team for you.

• Build and maintain agent knowledge and evaluation infrastructure for Fieldguides 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 platforms reliability and quality roadmap

• Youve built AI products not just called an LLM API

• Youre curious about evals and error analysis. You want to understand why an agent failed not just that it did

• Youre comfortable in the backend with a bias toward reliable systems

• Youre motivated by long-horizon agents that do real work in production

Must-have:

• Hands-on experience building AI products

• Working knowledge of evals and error analysis

• Backend engineering experience

Nice-to-have:

• Platform engineering skills

• Frontend experience

• Distributed systems experience

• Long-horizon agents: working on agents that do real sustained work and not one-shot demos

• Evaluation as a craft: Evals and error analysis are core to how this team improves quality

• Platform-level impact: Your work shapes the reliability and quality of every agent built on top of it

• Frontier problems: Youre working on open problems in agent reliability that dont yet have established playbooks

• 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

• Fearless Inspire and break down seemingly impossible walls

• Fast Launch fast with excellence; iterate to perfection

• Lovable Deliver happiness and 11-star experiences

• Owners Execute and run the business with ownership

• Win-win Create mutual value and earn trust for life

• Inclusive Scale the best ideas with inclusive teams

Required Experience:

Unclear Seniority