Software Engineer (Foundation Agents)

Fieldguide

United States Posted October 2, 2026

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On-site Full-time Mid level
Salary Range

$190,000 - $220,000

Job Description

Join the Foundation Agents team at Fieldguide, where you'll work on the cutting edge of AI product development. As a Software Engineer, you'll build and maintain agent knowledge and evaluation infrastructure, develop the next generation of agents, and perform error analysis to improve quality. Your work will have a platform-level impact, shaping the reliability and quality of every agent built on top of it.

  • Construire et maintenir l'infrastructure de connaissance et d'évaluation des agents pour les agents à long terme de Fieldguide.
  • Collaborer avec des ingénieurs seniors pour exécuter la feuille de route de fiabilité et de qualité de la plateforme.
  • Effectuer une analyse des erreurs sur le comportement des agents et aider à transformer les résultats en améliorations concrètes de la qualité.
  • If you're excited by long-horizon agents that do real-world work, this is the team for you
  • 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
  • You've built AI products, not just called an LLM API
  • Backend engineering experience
  • Hands-on experience building AI products
  • Working knowledge of evals and error analysis
  • Platform engineering skills
  • Frontend experience
  • Distributed systems experience
Required Skills
software development agents LLM distributed systems valuation
How to apply

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