Senior Software Engineer, Agents (Foundation Agents)

📋 Description

• Evals strategy and error-analysis practice, shaping how the team measures and improves agent quality
• Design and build agent knowledge and evaluation infrastructure for Fieldguide's long-horizon agents
• Lead error analysis on agent behavior, turning findings into concrete platform-level reliability
• Build and harden backend systems that support agent execution, evaluation, and monitoring at scale
• Drive the AI platform's reliability and quality roadmap forward, working closely with the broader
• Mentor engineers on the team, raising the bar on eval rigor and error-analysis practice

🎯 Requirements

• 1+ years working specifically on agents
• Strong experience working on an AI platform
• Demonstrated experience building evals and performing error analysis
• Backend engineering experience
• Built AI products end-to-end, with real ownership over agent quality outcomes
• Think in evals and error analysis as a discipline; dig into why an agent failed and fix the

🎁 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.