Software Engineer, Agents (Foundation Agents) at Fieldguide in San Francisco, CA

Job description

• Application
• About Us
• 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.
• 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: You're working on open problems in agent reliability that don't yet have established playbooks

Responsibilities

• 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

Requirements

• 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
• Hands-on experience building AI products
• Working knowledge of evals and error analysis
• Backend engineering experience
• Platform engineering skills
• Frontend experience
• Distributed systems experience

Skills

Required

• Hands-on experience building AI products
• Backend engineering experience

Preferred

• Platform engineering skills
• Frontend experience
• Distributed systems experience

Benefits

• 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
• Fieldguide’s Total Rewards philosophy is to ensure holistic and competitive compensation that not only attracts and retains top talent but also fosters a culture of accountability and ownership in all the regions where we operate. Our salary ranges are determined by role, level, and location tier to ensure pay aligns with local market conditions and ensures fairness, transparency, and the recognition of employees' contributions. Job compensation ranges may span multiple career levels. The actual base pay for the successful candidate will depend on several factors, including location tier, transferable or job-related skills, work experience, relevant training/certifications, business needs, and market demands. The posted range is a good-faith estimate; actual offer is based on location, experience, skills, and qualifications.