Staff Software Engineer, App Platform

or 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 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 As a Staff Platform Engineer at Fieldguide, you will design and build the foundational platform that powers Fieldguide, including core platform services and tooling that make it fast, safe, and consistent to deliver new capabilities to customers. This is the platform on which every product surface and AI agent at Fieldguide is built. You will operate as a technical leader across teams, defining standards and reducing complexity for product, AI, and infrastructure engineers. Your work will directly shape how Fieldguide can ship quickly for our largest enterprise customers while keeping our systems reliable and scalable. What You’ll Own Lead the design and evolution of Fieldguide's core platform services, including the foundational systems, APIs, and shared primitives that every product surface and agent depends onBuild platform capabilities that compound the leverage of product and AI engineers, turning hard problems into reusable building blocksDefine the architecture for how new product capabilities get delivered across our SaaS, enterprise single-tenant, and government-cloud environmentsPartner directly with product, design, and AI engineering leaders to understand customer needs and translate them into platform investmentsDrive cross-team initiatives that improve product velocity, system reliability, and consistency across the applicationOwn the standards for service design, data modeling, and platform integration patterns used across FieldguideMaintain and evolve the internal developer platform that supports the team, including deployment tooling, and agentic engineering capabilitiesMentor senior and mid-level engineers across the org and raise the bar for platform engineering at Fieldguide Who You Are 10+ years of experience in software engineering, with significant time spent building product-facing platforms or foundational application servicesStrong product instincts and a track record of shipping platform capabilities that unlocked meaningful customer outcomesDeep experience designing APIs, services, and shared systems that other engineers build on top ofStrong fluency with modern cloud platforms (AWS preferred), Kubernetes, and distributed systemsTrack record of operating as a technical leader across multiple teams without owning them directlyExcellent judgment on what to build into the platform, what to leave to product teams, and what to buyStrong software engineering fundamentals and the ability to contribute to and review complex codebasesExcellent written and verbal communication, with the ability to drive alignment across engineering, product, and designHigh agency and a bias toward owning problems end-to-end Bonus Points Experience building platforms that power AI-native products, including agent frameworks, model orchestration, or LLM-powered application surfacesExperience designing platforms that support both multi-tenant SaaS and single-tenant enterprise deploymentsExperience as a founding or early platform engineer at a vertical SaaS or enterprise AI company Benefits Competitive compensation with equityComprehensive health and wellness benefitsFlexible time off and work schedulesTechnology reimbursements401(k) planTwice-yearly in-person offsites across the U.S.Wellness benefits starting on your first day Our Values Fearless — Inspire and break down seemingly impossible wallsFast — Launch fast with excellence; iterate to perfectionLovable — Deliver happiness and 11-star experiencesOwners — Execute and run the with ownershipWin-win — Create mutual value and earn trust for lifeInclusive — Scale the best ideas with inclusive teams Skills: Software Engineering