Software Engineer (Foundation Agents)

Fieldguide; United States; On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Health

Dental

PTO

Job summary

Fieldguide is seeking engineers for the Foundation Agents team to build and maintain the knowledge and evaluation infrastructure powering its long-horizon agents. You will work on backend systems that support agent execution, evaluation, and monitoring.

Join a collaborative effort to improve reliability and quality at scale, tackle frontier problems in agent reliability, and partner with senior engineers on the platform roadmap.

Qualifications

• Hands-on experience building AI products.
• Experience with evals and error analysis in production systems.
• Backend-focused with some frontend exposure and distributed systems know-how.

Responsibilities

• Build and maintain agent knowledge and evaluation infrastructure for Fieldguide’s long-horizon agents.
• Build backend systems that support agent execution, evaluation, and monitoring.
• Partner with senior engineers to execute the platform’s reliability and quality roadmap.

Skills

Backend engineering

AI product experience

Evals and error analysis

Platform engineering

Frontend experience

Distributed systems

Job description

• 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
• 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
• 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

Benefits

• Health
• Dental
• PTO

If you’re excited by long-horizon agents that do real-world work, this is the team for youYou’re curious about evals and error analysis. You want to understand why an agent failed, not just that it didYou’re comfortable in the backend, with a bias toward reliable systemsYou’re motivated by long-horizon agents that do real work in productionYou’ve built AI products, not just called an LLM APIBackend engineering experienceHands-on experience building AI productsWorking knowledge of evals and error analysisPlatform engineering skillsFrontend experienceDistributed systems experience