Member of Technical Staff, iOS

Location: San Francisco, CACompany Stage of Funding: Series C AI Infrastructure Company ($10B Valuation)Office Type: Onsite (5 Days Per Week)Salary: $130,000–$300,000 + Equity

Company Description

We're representing one of the fastest-growing AI infrastructure companies building the connection between human expertise and frontier AI models. Their platform enables millions of experts to contribute to AI development while helping leading AI labs and Fortune 500 companies capture, evaluate, and operationalize human knowledge at scale.

As mobile becomes an increasingly important part of the expert experience, the company is investing in a world-class native iOS platform. This engineer will help build the mobile applications that thousands of experts use daily to discover opportunities, complete onboarding, collaborate with AI-powered workflows, and engage with the platform. You'll join a small, high-impact team with significant ownership and help establish the future of the company's mobile engineering organization.

What You Will Do

• Design, build, and maintain high-quality native iOS applications using Swift and SwiftUI.
• Own features end-to-end, from product discovery and technical design through implementation, testing, deployment, and iteration.
• Collaborate closely with Product, Design, AI, and Backend Engineering to deliver polished mobile experiences.
• Build reusable SwiftUI components and contribute to scalable mobile architecture.
• Optimize application performance, reliability, testing, and release processes.
• Develop intuitive, high-quality user experiences that improve engagement and retention.
• Leverage modern AI-assisted development tools to accelerate engineering productivity while maintaining high quality.
• Contribute to long-term mobile architecture, engineering standards, and platform evolution.
• Continuously improve the mobile experience through customer feedback, experimentation, and rapid iteration.
• Help shape the future of the company's mobile platform as it scales globally.

Ideal Background

• 2–5+ years of professional software engineering experience building native iOS applications.
• Strong proficiency with Swift and SwiftUI.
• Experience shipping and maintaining production applications through the Apple App Store.
• Strong understanding of modern iOS architecture, application lifecycle, and mobile engineering best practices.
• Experience building high-quality user interfaces with a strong attention to performance and usability.
• Solid software engineering fundamentals including testing, debugging, profiling, and performance optimization.
• Familiarity with AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, Codex, or similar.
• Excellent product instincts with a passion for creating exceptional mobile user experiences.
• Comfortable working in fast-paced startup environments with evolving priorities.
• High ownership mindset and ability to independently drive projects to completion.

Preferred

• Experience building consumer-facing or marketplace mobile applications.
• Familiarity with modern mobile architecture patterns and reusable UI component libraries.
• Experience collaborating closely with product managers, designers, and backend engineers.
• Startup experience with significant ownership across the full product lifecycle.
• Experience integrating AI-powered features or intelligent workflows into mobile applications.
• Strong understanding of mobile performance optimization, testing, and release automation.
• Passion for building intuitive, polished mobile experiences with exceptional attention to detail.
• Interest in AI infrastructure, developer productivity, and rapidly evolving technology platforms.

Compensation and Benefits

• Base salary: $130,000–$300,000.
• Generous equity package vested over four years.
• Bi-annual performance bonus.
• Up to $15,000 relocation assistance.
• $10,000 housing bonus for employees living within 0.5 miles of the office.
• $1,500 monthly meal stipend.
• Complimentary Equinox membership.
• $200 monthly laundry reimbursement.
• $200 monthly wellness reimbursement.
• Comprehensive medical, dental, and vision insurance.
• Opportunity to build the native mobile experience for one of the world's fastest-growing AI companies while helping define the future of its mobile platform alongside world-class engineers, product leaders, and AI researchers.