[Hiring] Principal Software Engineer @ServiceTitan

Role Description

ServiceTitan is the operating system for the trades. Our mobile platform puts that operating system in the hands of technicians and business owners in the field, and it has to work flawlessly, at scale, every time. We're looking for a Principal Software Engineer to set the technical direction for that platform — across iOS and Android — and raise the bar for how our mobile engineers build, ship, and scale software.

You'll own platform architecture, drive the long-term technical vision for mobile, and lead major investments in performance, reliability, observability, and developer productivity. You'll influence mobile strategy across multiple product teams and build systems that scale to millions of users in the field.

What you'll do

• Own the short- and long-term technical vision for the mobile platform, end to end.
• Design, build, and improve the critical systems powering ServiceTitan's iOS and Android apps.
• Improve the security, availability, reliability, and performance of our mobile products.
• Drive and participate in major architectural and strategic decisions, especially those related to scale.
• Build tools and systems that increase the efficiency of every mobile engineer.
• Identify opportunities to extract or build shared systems that benefit multiple mobile teams.
• Mentor and guide engineers across the mobile organization and beyond.
• 60% development, 40% everything else.
• Partner with Recruiting on interviewing candidates and co-own lead generation (tech talks) and screening.
• Contribute to the mobile roadmap and resource planning.
• Define metrics for success and track them consistently.
• Communicate clearly with cross-functional partners — engineers, product managers, customers, and other stakeholders.

Qualifications

• 15+ years of industry experience, including building large-scale, consumer or enterprise mobile applications.
• 10+ years in senior engineering roles, designing APIs, abstractions, and tools used by other engineers.
• Expert-level knowledge of native iOS development (Swift, UIKit/SwiftUI, Xcode) and/or native Android development (Kotlin, Jetpack, Android Studio).
• Proven experience architecting mobile apps for scale: modularization, offline-first design, dependency injection, and clean separation of concerns.
• Experience taking existing mobile codebases from monolithic to modular, domain-based architectures.
• Strong background in mobile performance engineering — app startup time, memory and battery efficiency, rendering performance, and crash-free rates.
• Experience with mobile observability and monitoring tools (e.g., Firebase Crashlytics, Datadog, New Relic, or Application Insights).
• Experience with mobile CI/CD pipelines and release automation (e.g., Fastlane, Bitrise, GitHub Actions, or TeamCity).
• Deep familiarity with version control, unit and UI testing, debugging, and profiling tools standard to mobile development.
• Experience integrating large-scale third-party SDKs and APIs into mobile apps.
• Working knowledge of cloud infrastructure supporting mobile backends (Azure, AWS, or similar).
• Ability to empathize with our users and champion their experience.
• Strong communication and technical writing skills.
• B.S., M.S., or Ph.D. in Computer Science, Engineering, or a related technical field.

Benefits

• Flextime, recognition, and support for autonomous work.
• Flexible time off with ample learning and development opportunities.
• Comprehensive onboarding program and leadership training for Titans at all levels.
• Holistic health and wellness benefits including company-paid medical, dental, and vision.
• Parental leave and support, fertility services, surrogacy, and adoption reimbursement.
• On-demand maternity support through Maven Maternity and free breast milk shipping through Maven Milk.
• Pet insurance, legal advisory services, financial planning tools, and more.

Company Description

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.

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.