FieldGuide
Senior Software Engineer, Agents (Foundation Agents)
$225K–$250K
San Francisco, CA · Hybrid · Senior · Full-time · Posted Sep 16, 2026
- Experience
- 1+ years working specifically on agents; no other duration stated.
About the job
Own the evaluation, reliability, and backend infrastructure for Fieldguide’s long-horizon AI agents.
What you'll do
- Set evaluation strategy and lead error analysis to improve agent quality.
- Build agent knowledge, evaluation, execution, and monitoring infrastructure.
- Advance the AI platform’s reliability roadmap and mentor engineers.
What they ask for
- Experience working specifically on agents.
- Strong experience working on an AI platform.
- Demonstrated experience building evaluations and performing error analysis.
- Backend engineering experience.
Nice to have
- Strong platform engineering skills.
- Frontend or distributed systems experience.
Pay
$225K – $250K (base salary)
AI focus
Develop long-horizon agents and improve their knowledge, evaluation, quality, and reliability in production.
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