Principal Engineer

ServiceTitan•US CA Remote, CA

9d•$246,500 - $395,600

About The Position

ServiceTitan is seeking a seasoned technical leader to shape the technical direction of company-wide initiatives while remaining hands-on in design, coding, and delivery. The role supports a platform serving home and commercial service businesses, including ML- and AI-driven scheduling, dispatch automation, and real-time operational workflows. The Principal Engineer will own technical vision and delivery for their domain, establish engineering standards and reusable systems, guide architecture and strategy, and help grow the engineering team.

Requirements

15+ years of industry experience in large-scale enterprise web or SaaS applications.
7+ years in senior individual-contributor roles designing and building systems used by other engineers at scale.
Proven track record of designing and shipping large-scale distributed systems.
Deep expertise in at least one primary technology stack, such as C#/.NET, Java, C++, or equivalent, and ability to quickly ramp up on and contribute to technologies in ServiceTitan’s stack.
Strong command of distributed systems fundamentals, including event-driven architecture, asynchronous programming, concurrency, fault tolerance, and performance tuning.
Hands-on experience with cloud infrastructure such as Azure, AWS, or GCP, including architecture, automation, and operational practices.
Grounding in data architecture, including relational, NoSQL, vector databases, and distributed persistence.
Familiarity with AI/ML systems and LLM-based architectures, including orchestration, retrieval, and agentic patterns.
Experience leading monolith-to-microservices or service-oriented migrations through completion.
Command of modern engineering practices and tools, including Git, CI/CD, Docker, RESTful services, and observability tooling such as Elasticsearch, DataDog, or Prometheus.
B.S., M.S., or PhD in Computer Science, Engineering, or a related technical field.

Nice To Haves

Bias for execution and comfort working both at the architecture whiteboard and in the codebase, with accountability for both.
Ability to communicate complex technical decisions clearly to engineers, product managers, and leadership, in writing and in person.
Coaching mindset and investment in improving engineers, teams, codebases, and architectures.
Breadth across engineering with deep mastery in at least one area and curiosity to develop credibility in new domains.
Habit of identifying risks, dependencies, and improvement opportunities early, with ownership to address them.
Empathy for end users and practice of grounding technical decisions in customer impact.

Responsibilities

Define the technical vision for a domain, plan at least 18 months ahead, write code, lead implementation, and take end-to-end accountability for quality and outcomes.
Produce production-ready system designs and help build them; write code and lead others in producing high-quality code.
Drive and participate in architectural decisions involving scale, reliability, and security.
Set engineering standards through implementations, code reviews, and technical decisions; conduct architecture reviews, identify systemic risks, and introduce improvements to engineering effectiveness.
Identify opportunities for shared systems and reusable patterns that reduce duplication and inconsistency across teams.
Coach and mentor Staff and Senior engineers in technical design, architecture, and systems thinking; create growth opportunities and lead cross-team knowledge-sharing sessions.
Partner with engineering leadership on roadmaps and resource planning for company-wide initiatives.
Advocate for scalability, resilience, security, and performance requirements and ensure teams account for them in planning and execution.
Align technical direction with ServiceTitan’s business priorities.
Assess candidates for senior technical roles, design interview plans, make hiring recommendations, and help uphold the engineering bar.

Benefits

Flexible time off and flextime.
Learning and development opportunities, comprehensive onboarding, leadership training, programs, and events.
Recognition through Bonusly, peer-nominated awards, and other rewards.
Company-paid medical, dental, and vision coverage, including 100% employer-paid options and 90% dependent coverage.
Flexible Spending Account (FSA) and Health Savings Account (HSA).
401(k) match.
Telehealth options, including One Medical memberships.
Parental leave and support.
Up to $20,000 in fertility services, 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.
Annual bonus and equity.