AI Engineer

ServiceTitan is hiring an AI Engineer (California onsite) to build core engineering primitives for the Agent OS platform.

Responsibilities

• Build the runtime for role-specific agents, including tool use, delegation, pause/resume, durable checkpoints, retries, and failure recovery.
• Create deterministic controls around non-deterministic reasoning, including governed reads, proposed writes, precondition checks, business invariants, scoped permissions, idempotency, audit trails, and rollback.
• Develop tenant-scoped context assembly with retrieval, freshness controls, provenance, transcripts, artifacts, tool results, and replayable evidence.
• Implement human‑in‑the‑loop gates with approval thresholds, reversibility, tenant policy enforcement, and audit history for financial, contractual, dispatch, warranty, and compliance‑sensitive workflows.
• Build offline and online evaluation systems, including scenario libraries, simulation, trajectory review, regression detection, and cost and latency telemetry with autonomy promotion gates.
• Help product teams package prompts, tools, context requirements, policies, evals, rollout controls, ownership, and rollback into governed capabilities for owners, CSRs, dispatchers, technicians, managers, and back‑office teams.
• Make practical tradeoffs across latency, cost, quality, structured outputs, caching, fallback behavior, provider choice, and model routing behind a shared platform layer.
• Design and implement core Agent OS platform services.
• Write production code and review implementation details from other engineers.
• Build reliable APIs, workflows, tools, and services for agent execution.
• Inspect traces, debug failures, and improve production behavior.
• Design evaluation scenarios and regression suites for agent workflows.
• Work through real agent failure modes, including stale context, wrong tool calls, missing permissions, unsafe actions, poor retrieval, latency spikes, and cost regressions.
• Partner with domain teams to turn agent use cases into reusable platform patterns.
• Help define platform contracts for tools, actions, approvals, context, memory, evidence, and evaluation.
• Contribute to technical direction while staying grounded in what can ship quickly and safely.
• Communicate clearly with engineers, product managers, architects, security partners, and engineering leadership.

Salary

• USD 137,900 - 221,400 per year

Benefits

• Flexible time off with ample learning and development opportunities
• Comprehensive onboarding program
• Leadership training for Titans at all levels
• Bonusly, peer‑nominated awards, and more
• Company‑paid medical, dental, and vision (with 100% employer paid options and 90% coverage for dependents)
• FSA and HSA
• 401k match
• Telehealth options including memberships to One Medical
• Parental leave and support
• Up to $20k in fertility services (i.e. IUI and IVF), surrogacy, and adoption reimbursement
• On demand maternity support through Maven Maternity
• Free breast milk shipping through Maven Milk
• Pet insurance
• Legal advisory services
• Financial planning tools

What We Offer

• Flextime, recognition, and support for autonomous work
• Holistic health and wellness benefits
• Support for Titans at all stages of life

Recruitment Notes

• We use technology, including automated and AI‑assisted tools, to support certain aspects of the recruitment process.
• AI tools are not used to make hiring decisions; all hiring decisions are made by our hiring teams.