Senior Software Engineer, Agents (Foundation Agents)

Posted 3 Hours Ago
Be an Early Applicant
San Francisco, CA, USA
Hybrid
225K-250K Annually
Senior level
Artificial Intelligence • Software
We Power the People that Power Trust through Agentic Solutions
The Role
Owns evaluation strategy, error analysis, agent knowledge infrastructure, and backend systems for long-horizon AI agents. The role improves agent quality, reliability, execution, monitoring, and platform scalability while mentoring engineers and shaping the AI platform roadmap. Candidates need hands-on experience building AI products and agents, developing evaluations, analyzing failures, and delivering backend or platform systems.
Summary Generated by Built In
About Us

Fieldguide is establishing a new state of trust for global commerce and capital markets by automating and streamlining the work of assurance and audit practitioners—specifically in cybersecurity, privacy, and financial audits. We build software for the people who enable trust between businesses.

We're based in San Francisco, CA, and backed by Goldman Sachs Alternatives, Bessemer Venture Partners, 8VC, Floodgate, Y Combinator, and more. Over 50 of the top 100 accounting and consulting firms trust Fieldguide to power mission-critical work.

 
About the Role

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. As a Senior Software Engineer, Agents, you'll take ownership of how the team measures and improves agent quality, and help drive the platform forward.

 
What You’ll Own
  • 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 improvements

  • 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 AI team

  • Mentor engineers on the team, raising the bar on eval rigor and error-analysis practice

Who You Are
  • You've built AI products end-to-end, with real ownership over agent quality outcomes

  • You think in evals and error analysis as a discipline; you dig into why an agent failed and fix the systemic cause

  • You're strong in the backend and comfortable owning platform-level systems

  • You're motivated by long-horizon agents that do real work in production

  • You multiply the people around you, not just your own output

Experience

Must-have:

  • 1+ years working specifically on agents

  • Strong experience working on an AI platform

  • Demonstrated experience building evals and performing error analysis

  • Backend engineering experience

Nice-to-have:

  • Strong platform engineering skills

  • Frontend experience

  • Distributed systems experience

What Should Excite You
  • Long-horizon agents: Working on agents that do real, sustained work

  • Evaluation as a craft: Evals and error analysis are core to how this team improves quality, not an afterthought

  • 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 have established playbooks yet

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

Our Values
  • Fearless — Inspire and break down seemingly impossible walls

  • Fast — Launch fast with excellence; iterate to perfection

  • Lovable — Deliver happiness and 11-star experiences

  • Owners — Execute and run the business with ownership

  • Win-win — Create mutual value and earn trust for life

  • Inclusive — Scale the best ideas with inclusive teams

Skills Required

  • At least 1 year of experience working specifically on AI agents
  • Strong experience working on an AI platform
  • Demonstrated experience building evaluations and performing error analysis
  • Backend engineering experience
  • Strong platform engineering skills
  • Frontend experience
  • Distributed systems experience

Fieldguide Compensation & Benefits Highlights

  • Healthcare Strength Health coverage is described as comprehensive across medical, dental, vision, and mental health, with wellness benefits that start day one and a bundle of free therapy sessions on some roles. HSA/FSA options and life/disability insurance are also included in the package.
  • Leave & Time Off Breadth Flexible PTO and flexible work schedules are emphasized, with paid holidays and sick leave noted alongside remote or hybrid options depending on the role. Twice‑yearly in‑person offsites complement the remote setup.
  • Equity Value & Accessibility Meaningful equity/stock options are positioned as a core component of total rewards and appear broadly included across postings. Some roles also indicate performance bonuses in addition to competitive cash compensation.

Fieldguide Insights

Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: San Francisco, California
230 Employees
Year Founded: 2020

What We Do

Build the expertise the rest of the industry will follow. Fieldguide is establishing a new state of trust for global commerce and capital markets by automating and streamlining the work of assurance and audit practitioners. We build agentic software for the people who enable trust between businesses. This is where deep professional expertise meets cutting-edge AI. Our team is reimagining how the world's trust is earned, and we're building the people who define how AI works in a domain with real stakes and high data complexity. If you want a career the rest of your industry hasn't caught up to yet, you'll find it here. Backed by top investors including Growth Equity at Goldman Sachs Alternatives, Bessemer Venture Partners, 8VC, Floodgate, and Y Combinator, we are on a growth journey few companies realize.

Why Work With Us

You'll matter here. We're an early-stage company where your work has outsized impact. We've already launched Field Agents, agentic AI that transforms audit and advisory workflows, and we're just getting started. What you build here will be followed by the rest of the industry.

Fieldguide Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: Not Specified
HQSan Francisco, California

Similar Jobs

Fieldguide Logo Fieldguide

Software Engineer

Artificial Intelligence • Software
Hybrid
San Francisco, CA, USA
230 Employees
190K-220K Annually

Fieldguide Logo Fieldguide

Product Manager

Artificial Intelligence • Software
In-Office or Remote
2 Locations
230 Employees
220K-250K Annually
In-Office or Remote
2 Locations
230 Employees
180K-245K Annually

Fieldguide Logo Fieldguide

Fp&a Manager

Artificial Intelligence • Software
In-Office or Remote
2 Locations
230 Employees
150K-180K Annually

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account