Mercor
Member of Technical Staff, iOS
About the opportunity
Mercor’s mission is to organize human intelligence for the AI economy. We build the infrastructure that enables frontier AI labs and enterprises to train, evaluate, and improve AI on real-world professional work. More than five million experts have joined our network, and we pay out over $5 million daily for their knowledge and expertise.
We built our training and evaluation infrastructure alongside the world’s leading AI labs. Now, we’re bringing those capabilities to enterprises across industries, enabling them to train, evaluate, and improve AI using their own expertise and standards. Our APEX benchmarks measure how AI performs on economically valuable work, while our enterprise evaluations and post-training capabilities turn those insights into measurable improvements across real-world workflows.
Our work sits at the intersection of frontier AI, human expertise, and real-world application. We’re solving problems few companies have encountered, with the opportunity to influence what the world’s most advanced AI systems become capable of doing. We’re looking for people who bring different perspectives, take ownership, exercise sound judgment, and hold themselves to an exceptionally high standard. You’ll have the opportunity to do consequential work alongside talented colleagues who challenge one another, collaborate openly, and share a commitment to excellence.
Mercor is profitable and recently raised a $750 million Series D at a $20 billion valuation. We work in person five days a week in San Francisco, New York, and London.
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
Mercor is an Equal Opportunity Employer and is committed to providing equal opportunity to all employees and applicants. Mercor does not discriminate based on actual or perceived race, color, creed, religion, national origin, ancestry, citizenship status, age, sex or gender (including pregnancy, childbirth, related medical conditions and lactation), gender identity or gender expression, sexual orientation, marital status, military service and veteran status, disability, protected medical condition as defined by California or local law, genetic information, or any other characteristic protected by applicable federal, California, or local laws and ordinances. Further, Mercor prohibits discrimination, harassment, and retaliation based on any combination of protected characteristics. This Policy applies to all areas of employment, including recruitment, hiring, training, promotion, compensation, benefits, discipline, termination, and all other privileges, terms, and conditions of employment. This Policy and the law prohibit employment discrimination against any employee or applicant based on any legally protected status.