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# Principal Software Engineer, Platform (DevEx)

- **Company:** ServiceTitan, Inc.
- **Location:** United States
- **Salary:** $247,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Software as a Service, Code Review, Continuous Integration, Key Management, Software Engineering, Large Language Models, Multi-Agent Systems, AI Coding Agents, Build Tools
- **Published:** October 31, 2026
- **Apply:** https://www.builtincolorado.com/job/principal-software-engineer-platform-devex/12000971?handler=ApplyRedirect

## About the Role

* 15-20+ years of software engineering experience, with recent (last 6-12 months) hands-on work building coding-agent-runtime infrastructure - agent orchestration, harnesses, or LLM reasoning loops. This is a hard filter: process automation or AI-assisted code review experience does not meet this bar.
 * A track record consistent with Principal-level scope: technical decisions and architecture that other teams and orgs build on, not just your own team's roadmap.
 * Deep experience with build systems, CI/CD, or internal developer platforms shipped and operated in production at real scale.
 * Comfort setting direction with minimal oversight - this is a small, high-trust team; you're expected to define the plan, not receive it.
 * Strong instincts for environment safety (RBAC, secrets management, compliance gates) as applied to autonomous or semi-autonomous coding agents specifically.

Preferred Experience

 * Prior experience where coding agents are already core to daily engineering workflow, not a pilot.
 * Experience representing engineering direction externally (blog posts, conference talks) or influencing practice change across an org.

## Description

* Domain Expertise & Influence: Proactively identify where your expertise on coding-agent infrastructure could help teams across R&D, not just within DevEx - and contribute to the wider industry conversation on agent-runtime architecture.
 * Delivery: Deliver complete, comprehensive system designs and lead autonomous delivery of the projects that come from them, in partnership with R&D peers. Remove barriers that are widely felt across the engineering org, not just your pod.
 * Independence & Decision Making: Operate self-directed and unsupervised. Act as the key technical consultant on agent-runtime architecture across multiple teams; your judgment and timeliness on hard calls is what people rely on.
 * Complex System Understanding: Anticipate technical problems before they surface in major platform initiatives; identify ServiceTitan's technology needs on a 1-3 year horizon for AI-native developer tooling and drive the milestones to get there.
 * Leading by Example: Your work (harness code, orchestration patterns, agent-safety guardrails) becomes the thing other engineers copy to hit the quality bar you've set.
 * Mentor and raise the technical bar for engineers at Staff level and below on the team.