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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer, Platform (DevEx) - **Company:** ServiceTitan, Inc. - **Location:** United States (Remote available) - **Salary:** $263,800.0 - **Contract:** Permanent contract - **Skills:** Reference Implementation, Artificial Intelligence, Code Review, Continuous Integration, Key Management, Role-Based Access Control, Software Engineering, Apex Code, Large Language Models, Multi-Agent Systems, Build Tools - **Published:** August 19, 2026 - **Apply:** https://servicetitan.wd1.myworkdayjobs.com/ServiceTitan/job/US-Remote/Principal-Software-Engineer--Platform--DevEx-_JR115781 ## 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 This is a Principal Engineer role per ServiceTitan's engineering leveling framework: 10+ years of experience, SME & Systems Design Expert level, with broad R&D impact and an 18-month planning horizon. You are not just building within DevEx - you're setting technical direction that other teams and eventually the APEX platform build against. What You'll Build * AI-Native Tooling: Agent orchestration layers, harnesses, and LLM reasoning loops - infrastructure other engineers will treat as the reference implementation for how ServiceTitan builds with coding agents. * Environments, Build & CI/CD, Developer Portal, Guardrails & Compliance, Velocity Harness - the full DevEx platform surface, where your architectural calls set the pattern others follow. What You'll Do * 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. ## Related Videos - [AI Won't Fix Your Engineering Culture](https://www.wearedevelopers.com/videos/100266-ai-won-t-fix-your-engineering-culture) - [Modern Data Architectures need Software Engineering](https://www.wearedevelopers.com/videos/1030-modern-data-architectures-need-software-engineering) - [Are Code Reviews Worth It? Insights from 16 Years of Review Data](https://www.wearedevelopers.com/videos/1135-are-code-reviews-worth-it-insights-from-16-years-of-review-data) - [Designing for Agents Will Make You Better at Designing for Humans](https://www.wearedevelopers.com/videos/100278-designing-for-agents-will-make-you-better-at-designing-for-humans) - [Building a framework-independent component library](https://www.wearedevelopers.com/videos/1679-building-a-framework-independent-component-library) - [Build a CI/CD pipeline to automate code reviews and ensure code quality](https://www.wearedevelopers.com/videos/349-build-a-ci-cd-pipeline-to-automate-code-reviews-and-ensure-code-quality) ## Related Articles - [What is Agentic Programming and Why Should Developers Care?](https://www.wearedevelopers.com/magazine/625-what-is-agentic-programming-and-why-should-developers-care) - [Never delegate the understanding](https://www.wearedevelopers.com/magazine/749-never-delegate-the-understanding) - [What is Software Engineering in the Age of AI?](https://www.wearedevelopers.com/magazine/640-what-is-software-engineering-in-the-age-of-ai) - [From Prototype to Production: Build AI Agents with This Free 4-Course Learning Path](https://www.wearedevelopers.com/magazine/655-from-prototype-to-production-build-ai-agents-with-this-free-4-course-learning-path) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [Transforming Software Development: The Role of AI and Developer Tools](https://www.wearedevelopers.com/magazine/527-transforming-software-development-the-role-of-ai-and-developer-tools)