Senior Staff Software Engineer, Mobile

About the Role

We're building the next generation of ServiceTitan's iOS mobile applications, engineered to deliver unmatched performance, elegant design, and powerful capabilities for field technicians. As a Senior Staff Software Engineer, iOS, you'll lead the technical vision for our mobile organization, drive architectural alignment, and push Apple's ecosystem to its fullest potential.

Responsibilities

• Define and own the multi-year technical vision for ServiceTitan's iOS platform, establishing architecture principles, engineering standards, and platform frameworks.
• Lead the design of next-generation mobile frameworks and foundational systems serving tens of thousands of field technicians daily.
• Partner with executive and VP-level stakeholders across product, design, data, and backend to shape long-range roadmaps.
• Serve as the definitive technical authority for iOS, establishing alignment across engineering orgs and resolving complex cross-functional ambiguities.
• Identify and drive strategic technical investments, evaluating emerging Apple frameworks and industry trends.
• Architect scalable integrations with backend services via GraphQL, defining data access patterns.
• Champion and evolve ServiceTitan's use of The Composable Architecture (TCA) for shared state management, performance optimization, and modular design.
• Define the AI-assisted development strategy for iOS engineering, integrating tools like Claude, GitHub Copilot, Cursor, and Windsurf.
• Grow and mentor staff and senior engineers, setting the engineering bar for code quality, performance, and architectural integrity.

Qualifications

• Bachelor's degree in Computer Science or related field, or equivalent practical experience.
• 12+ years of mobile application development experience, with deep specialization in iOS.
• Expert-level mastery of Swift, with deep understanding of language internals, performance, and idiomatic design.
• Proven track record of defining and delivering architecture for large-scale mobile platforms.
• Strong hands-on experience with GraphQL and defining scalable data access patterns.
• Deep command of TCA, including shared state patterns, performance optimization, and modular decomposition.
• Exceptional ability to lead without authority, shaping technical direction through credibility and engineering judgment.
• Outstanding written and verbal communication skills, articulating complex technical trade-offs to diverse audiences.

Preferred Qualifications

• Prior experience at the Senior Staff level, setting platform strategy across large engineering organizations.
• Track record of influencing company-wide engineering culture, authoring standards, or shaping engineering practices.
• Deep familiarity with large-scale distributed systems design and mobile/backend interfaces.
• Strong proficiency with SwiftUI and experience leading its adoption in complex iOS codebases.

Nice to Have

• Familiarity with MVI architecture patterns and evaluating architectural trade-offs.
• Experience designing or owning CI/CD systems using tools like Bitrise or GitHub Actions.
• Experience establishing end-to-end test automation strategies.
• Open source contributions or public technical writing shaping iOS engineering practices.

Why ServiceTitan

Our mobile platform empowers tradespeople across North America, and your work will have a direct impact on their businesses. As a Senior Staff Engineer, you'll shape not only what we build but how we build it and grow as an engineering organization. You'll work with a team that values craft, purpose, and mentorship, using modern tooling and encouraging bold bets.

Benefits

• Flextime, recognition, and support for autonomous work, including flexible time off and learning opportunities.
• Holistic health and wellness benefits, including company-paid medical, dental, and vision, 401k match, and telehealth options.
• Support for life stages, including parental leave, fertility services, pet insurance, and legal advisory services.

Pay

For candidates in the United States, the salary ranges are:

• Zone 1 (CA, CT, DC, MD, MA, NJ, NY, VA, WA): $218,300 - $327,500 USD
• Zone 2 (All other US locations): $204,000 - $306,000 USD

International compensation varies by location and will be discussed during the hiring process. Total compensation includes an annual bonus, equity, and benefits.