Member of Technical Staff, iOS
At a glance
Senior Software Engineering role at Mercor. San Francisco · full-time · $160,000–$400,000 base.
techroles summary, based on the employer's posting.
What you'll do
- Build native iOS features in Swift and SwiftUI, from early product and technical planning through testing and release
- Work with product, design, AI, and backend engineering partners on customer-facing mobile experiences
- Create reusable SwiftUI components and refine the app’s usability, performance, reliability, and release quality
- Use AI development tools to move faster while contributing to mobile architecture and engineering standards
- Improve how experts discover projects, complete onboarding, and use AI-powered workflows
What you bring
- Professional experience building production iOS apps, with at least two years in software engineering
- Strong Swift and SwiftUI skills, including experience releasing production apps through the App Store
- A solid grasp of mobile architecture, testing, debugging, and performance optimization
- Experience using modern AI coding tools to speed up software development
Who this fits
This suits a senior individual contributor who wants end-to-end feature ownership and input into technical decisions and product direction. The role is based in San Francisco and requires working in the office five days a week. You should be comfortable with a small team and priorities that can shift quickly.
From the employer
About Mercor
Mercor's mission is to organize human intelligence to power the AI economy. We're a leading AI data company, building the layer between human expertise and frontier models. Millions of domain experts on the platform are paid over $4 million per day to train frontier AI models. Mercor's APEX benchmark family measures AI's real-world impact on professional work. Mercor Enterprise brings this same infrastructure to Fortune 500 companies: helping companies capture how their best people actually work, translating that expertise directly back into agents.
Mercor is creating a new category of work where expertise powers AI advancement. Achieving this requires an ambitious, fast-paced and deeply committed team. You’ll work alongside researchers, operators, and AI companies at the forefront of shaping the systems that are redefining society. Mercor is a profitable Series C company valued at $10 billion. We work in-person five days a week in our San Francisco, NYC, or London offices.
About the Role
As a Member of Technical Staff, iOS, you'll help build the next generation of Mercor's mobile experience for tens of thousands of AI experts around the world.
Our mobile platform is becoming a core part of the expert experience—from discovering projects and completing onboarding to collaborating with AI-powered workflows. You'll work closely with Product, Design, AI, and Backend Engineering to build intuitive, reliable, and high-performance native iOS experiences that directly improve expert engagement, retention, and satisfaction.
You'll join a small, fast-moving engineering team with significant ownership. From your first week, you'll ship production code, contribute to technical decisions, and work directly with product leaders to shape the roadmap. This is an opportunity to help establish Mercor's US mobile engineering capability while building products used every day by thousands of AI experts.
What You'll Do
Design, build, and ship high-quality native iOS applications using Swift and SwiftUI.
Own features end-to-end—from product discussions and technical design to implementation, testing, and release.
Collaborate closely with Product, Design, AI, and Backend Engineering to deliver customer-facing experiences.
Build reusable SwiftUI components and create polished, intuitive user experiences.
Optimize application performance, reliability, testing, and release quality.
Leverage modern AI coding tools to accelerate development while maintaining a high engineering bar.
Contribute to the long-term architecture and engineering standards of Mercor's mobile platform.
Solve real customer problems and continuously improve expert engagement and experience.
What We’re Looking For
2–5+ years of professional software engineering experience building production iOS applications.
Strong proficiency in Swift and SwiftUI.
Experience shipping production applications through the App Store.
Strong understanding of modern mobile architecture and engineering best practices.
Comfortable building products using modern AI development tools (e.g. Cursor, Claude Code, GitHub Copilot, Codex, or similar) to accelerate software development.
Strong software engineering fundamentals, including testing, debugging, and performance optimization.
Excellent product intuition—you enjoy building products that people actually use.
Comfortable working in fast-moving environments with evolving priorities.
High ownership, curiosity, and a bias toward shipping.
Why Mercor
Impact: Build products used every day by tens of thousands of AI experts and directly shape the future of the AI workforce.
Ownership: Join a small, high-velocity engineering team where you'll own features end-to-end and influence product direction from day one.
Learning: Work alongside world-class engineers, product leaders, and AI researchers building products at the frontier of AI.
Growth: Rapid career progression with opportunities to expand ownership as the mobile platform and engineering organization scale.
Benefits
Bi-annual performance bonus structure
Generous equity grant vested over 4 years
Up to $15k Relocation bonus
$10K housing bonus (if you live within 0.5 miles of our office)
$1.5K monthly stipend for meals
Free Equinox membership
$200 monthly laundry reimbursement
$200 monthly personal wellness reimbursement
Health, Dental, Vision insurance
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