StaffAI Engineer

About the role

ServiceTitan is looking for a StaffAI Engineer to join a small, senior AI platform team. You will build the core platform that powers role-specific agents and work closely with Product, Architecture, Security, Data Platform, Atlas and domain engineering teams. The role is based in Armenia, working Monday to Friday from 11am to 8pm.

Key responsibilities

• Build the agent runtime and workflow execution, including tool use, delegation, pause/resume, durable checkpoints, retries and failure recovery, so agents can resume safely without losing state.
• Build typed tools and action contracts with precondition checks, business invariants, scoped permissions, idempotency, audit trails and rollback.
• Build tenant-scoped context and memory systems, including retrieval, freshness controls, provenance, transcripts, artifacts and tool results.
• Build trust and approval infrastructure: human-in-the-loop gates, approval thresholds, reversibility, tenant policy enforcement and audit history for sensitive workflows.
• Build evaluation and observability: offline and online evals, scenario libraries, simulation, regression detection, cost and latency telemetry and autonomy promotion gates.
• Help product teams package prompts, tools, context, policies and evals into reusable capabilities for owners, CSRs, dispatchers, technicians, managers and back-office teams.
• Make trade-offs across latency, cost, quality, caching, fallback behavior, provider choice and model routing behind a shared platform layer.
• Write production code, review implementation details, build reliable APIs and workflows, inspect traces and debug failures.
• Design evaluation scenarios and regression suites, and partner with domain teams to turn use cases into reusable platform patterns.

What we offer

• Flexible time off, recognition and support for autonomous work, with a comprehensive onboarding program and leadership training.
• Company-paid medical, dental and vision coverage available day 1 to employees and dependents, plus parent and siblings' insurance, wellness benefit and office massage.
• Parental leave and support, financial planning tools, Employee Assistance Program services and Bonusly rewards.