Principal Software Engineer, Platform (DevEx)

Posted 2 Hours Ago
Be an Early Applicant
Hiring Remotely in US
Remote or Hybrid
247K-396K Annually
Expert/Leader
Artificial Intelligence • Cloud • Fintech • Machine Learning • Mobile • Software
The operating system for the trades.
The Role
Build and set the technical direction for ServiceTitan’s AI-native Developer Experience platform. Responsibilities include designing agent orchestration infrastructure, coding-agent runtimes, harnesses, CI/CD and developer platforms; establishing safety, compliance, RBAC, and secrets-management guardrails; delivering complex systems autonomously; influencing engineering teams and industry practices; and mentoring senior engineers.
Summary Generated by Built In

Ready to be a Titan?
ServiceTitan is building the Developer Platform for enterprise-scale SaaS. DevEx is a newly formed, lean, highly agile team (3–4 people) building AI-enabled platform infrastructure — pioneering AI-assisted development tools and coding agent runtimes (like Codex) to help engineering teams operate at "AI speed."

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.

What You'll Bring

  • 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.

Be Human With Us:
Being human isn’t about checking every box on a list. It’s about the experiences we have, people we meet, and the perspectives we share. So, if you have the skills but are hesitant to apply because of your background, apply anyway. We need amazing people like you to help us challenge the conventional and think differently about the problems that we’re solving. We’re in this together. Come be human, with us. 


Use of AI Technology:

We use technology, including automated and AI-assisted tools, to support certain aspects of our recruitment process. These tools are designed to improve efficiency and enhance the candidate experience. AI tools are not used to make hiring decisions; all hiring decisions are made by our hiring teams.


What We Offer:

When you join our team, you’re not just accepting a job. You’re making a career move. Here’s how we’ll support you in doing some of the most impactful work of your career:

  • Flextime, recognition, and support for autonomous work: Flexible time off with ample learning and development opportunities to continue growing your career. We offer a comprehensive onboarding program, leadership training for Titans at all levels, and other programs and events. Great work is rewarded through Bonusly, peer-nominated awards, and more.
  • Holistic health and wellness benefits: Company-paid medical, dental, and vision (with 100% employer paid options and 90% coverage for dependents), FSA and HSA, 401k match, and telehealth options including memberships to One Medical.
  • Support for Titans at all stages of life: 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, and more.

At ServiceTitan, we celebrate individuality and uniqueness. We believe that the convergence of fresh perspectives and experiences from all walks of life is what makes our product and culture so great. We strongly encourage people from underrepresented groups to apply. We do not discriminate against employees based on race, color, religion, sex, national origin, gender identity or expression, age, disability, pregnancy (including childbirth, breastfeeding, or related medical condition), genetic information, protected military or veteran status, sexual orientation, or any other characteristic protected by applicable federal, state or local laws.

ServiceTitan is committed to fair and equitable compensation for all of our employees. We thoughtfully consider a wide range of factors when determining individual compensation, which may change over time. We comply with all applicable minimum wage laws. For candidates in the United States, the good faith salary ranges estimate for this role is Zone 1: $263,800 USD - $395,600 USD Applicable for: CA, CT, DC, MD, MA, NJ, NY, VA, and WA Zone 2: $246,500 USD - $369,700 USD Applicable for: All other US locations. International Compensation for candidates residing outside the United States will vary by location and will be discussed during the hiring process. Actual compensation within a range is determined by factors including relevant experience, skill set, qualifications, and performance. In addition to base salary, our total compensation package includes an annual bonus, equity, and a holistic suite of benefits.

Skills Required

  • 15-20+ years of software engineering experience
  • Recent hands-on experience within the last 6-12 months building coding-agent-runtime infrastructure, including agent orchestration, harnesses, or LLM reasoning loops
  • Principal-level track record of technical decisions and architecture adopted by other teams or organizations
  • Deep experience shipping and operating build systems, CI/CD, or internal developer platforms at scale
  • Ability to set technical direction and define plans with minimal oversight
  • Experience with RBAC, secrets management, and compliance gates for autonomous or semi-autonomous coding agents
  • Experience using coding agents as a core part of the daily engineering workflow
  • Experience representing engineering direction externally through blog posts or conference talks, or influencing practice changes across an organization

ServiceTitan Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about ServiceTitan and has not been reviewed or approved by ServiceTitan.

  • Healthcare Strength Healthcare coverage is positioned as a major strength, with multiple plan features emphasizing broad medical, dental, and vision support plus telehealth-style access. Additional elements like HSA/FSA options and employer contributions reinforce perceived value beyond base pay.
  • Parental & Family Support Parental leave and family-forming support appear notably robust, with repeated references to paid leave and meaningful adoption/fertility assistance. The package is described as supportive across different family paths, though specifics can vary by plan and location.
  • Fair & Transparent Compensation Compensation is portrayed as generally competitive in several functions, particularly in engineering and experienced roles, contributing to an overall sense of being paid fairly. Equity and bonus components are also described as meaningful parts of total rewards for many roles.

ServiceTitan Insights

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The Company
HQ: Glendale, CA
2,760 Employees
Year Founded: 2012

What We Do

ServiceTitan is the world’s leading and fastest-growing software technology platform for the trades, a trillion-dollar global industry. We help small business entrepreneurs run and grow their businesses and aim to democratize the power of technology. The trades industry approaches $800B in North America alone and was significantly underserved by traditional software industry leaders prior to ServiceTitan’s entrance to the market. Today, ServiceTitan powers the businesses of more than 5,000 customers, is backed by the world’s leading venture capitalists, and continues to target triple-digit growth annually. ServiceTitan unlocks for small business, the tools and support that big business has enjoyed for decades; helping everyday entrepreneurs run and grow their businesses so they can build better lives for themselves and their families.

Why Work With Us

Not only do we change the lives of our customers, but we strive to create an environment full of opportunities that will change the lives of our employees. We are committed to giving extraordinary talent, extraordinary opportunity, and we prioritize investing in Titans, through a suite of benefits, learning and growth opportunities, and more.

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