Senior Software Security Engineer

Posted 11 Hours Ago
Hiring Remotely in San Francisco, CA, USA
Remote or Hybrid
215K-230K Annually
Senior level
Artificial Intelligence • Software
We Power the People that Power Trust through Agentic Solutions
The Role
Build and scale Fieldguide’s security function across secure software design, identity and secrets management, cloud and Kubernetes security, and agentic AI security. Partner with engineering and product teams to identify risks, develop secure frameworks, harden cloud controls, enforce AI-agent permissions and tenant isolation, and promote secure development through design reviews and coaching.
Summary Generated by Built In
About Us

Fieldguide is establishing a new state of trust for global commerce and capital markets by automating 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 built remote-first. We’re 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

Our customers hand us their most sensitive audit and compliance data, and our product is built around trust. That means our own security practices are core to what we promise them. The Information Security & Compliance team protects Fieldguide’s systems and earns that trust every day.

As one of the first dedicated security hires, you’ll help build the security function from the ground up. As a Senior Software Security Engineer, you will make the secure path the easy path for every Fieldguide engineer. You’ll range across secure design, identity and secrets management, infrastructure security, and agentic AI security. We prioritize around the biggest risks rather than fixed specialties, so your focus will shift over time.

You’ll report to our Lead Security Engineer and work closely with both Product and Platform teams.

Our Stack
  • Cloud & Infra: AWS, Kubernetes, Terraform

  • Application: Python, TypeScript, GraphQL

  • AI: LLM gateway and agent orchestration across multiple model providers

  • Security Tooling: Socket, Chainguard, GitHub Advanced Security, frontier cyber models

What You’ll Own
  • Partnering with engineering to find the biggest risks in a system before it ships, and building secure frameworks and libraries that make control adoption the path of least resistance.

  • Building and maintaining identity and secrets management systems, including credential issuance, rotation, and workload authentication. We’re moving towards short-lived, workload-based identity across our cloud and Kubernetes environments.

  • Hardening our cloud security controls and contributing to continuous cloud security posture management through infrastructure-as-code scanning, misconfiguration detection, and automated remediation.

  • Building the security model for AI agents that perform audit work. You’ll design permission boundaries that enforce what agents can see and do, harden them against prompt injection in untrusted documents, and ensure strict tenant isolation across our agentic platform.

  • Raising the security bar across engineering through design reviews and coaching, helping teams build securely without a gate in the way.

Who You Are
  • You have 5+ years of software engineering experience building and maintaining security-relevant systems in production.

  • You’ve led a security initiative from design through adoption, and you can point to engineers who are safer and faster because of it.

  • You have hands-on experience with identity and secrets management, including protocols such as OAuth 2.0 and OIDC.

  • You’re familiar with Kubernetes security primitives, including RBAC, namespaces, network policies, and admission controllers.

  • You reason clearly about trust boundaries and threat models to prioritize risk.

  • You thrive on breadth, ambiguity, and evolving priorities rather than a single narrow lane.

Bonus Points

  • Experience with developer security tooling such as SAST, dependency scanning, or secure build infrastructure.

  • Experience with SAML or SPIFFE/SPIRE, or building workload authentication systems from scratch.

  • Experience securing LLM-based or agentic systems.

More about Fieldguide:

Fieldguide is a values-based company. Our values are:

  • Fearless - Inspire & break down seemingly impossible walls.

  • Fast - Launch fast with excellence, iterate to perfection.

  • Lovable - Deliver happiness & 11 star experiences.

  • Owners - Execute & run the business with ownership.

  • Win-win - Create mutual value & earn trust for life.

  • Inclusive - Scale the best ideas with inclusive teams.

Some of our benefits include:
  • Competitive compensation packages with meaningful ownership

  • Flexible PTO

  • 401k

  • Wellness benefits, including a bundle of free therapy sessions

  • Technology & Work from Home reimbursement

  • Flexible work schedules

Skills Required

  • 5+ years of software engineering experience building and maintaining security-relevant systems in production
  • Experience leading a security initiative from design through adoption
  • Hands-on experience with identity and secrets management
  • Knowledge of OAuth 2.0 and OIDC
  • Experience with Kubernetes security primitives, including RBAC, namespaces, network policies, and admission controllers
  • Ability to reason about trust boundaries and threat models
  • Experience with developer security tooling such as SAST, dependency scanning, or secure build infrastructure
  • Experience with SAML or SPIFFE/SPIRE, or building workload authentication systems
  • Experience securing LLM-based or agentic systems

Fieldguide Compensation & Benefits Highlights

  • Healthcare Strength — Benefits materials and employer profiles outline comprehensive medical, dental, vision, and mental-health coverage, alongside HSA/FSA and life/disability options. Some postings indicate wellness coverage beginning on day one.
  • Leave & Time Off Breadth — Company materials describe flexible or unlimited PTO with paid sick days and holidays, supported by flexible schedules and remote options. This structure is presented as supporting work–life balance.
  • Wellbeing & Lifestyle Benefits — Wellness benefits, including bundled therapy sessions, technology/work-from-home reimbursements, and regular company offsites, are highlighted across listings. These perks are positioned as part of a holistic total-rewards package.

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The Company
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
HQ575 Market St #2650, San Francisco, CA 94105
Company Office Image
HQSan Francisco Headquarters
Learn more

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