iOS Engineer, Applied Foundations

About this role

OpenAI is hiring a Senior iOS Engineer for the Applied Foundations team to build core mobile experiences powering user authentication, account management, payments, and safety features across their apps. You'll own critical client-side systems and create reusable iOS frameworks that enable product teams to ship reliably and securely at global scale.

What you'll do

• Build and ship new iOS experiences showcasing AI capabilities
• Optimize app performance, reliability, and responsiveness globally
• Design and maintain shared iOS frameworks for account, trust, and commerce flows
• Establish testing frameworks and refine architecture for long-term maintainability
• Collaborate with product, design, research, and backend teams on high-impact features
• Provide technical leadership for OpenAI's iOS platform strategy

What they're looking for

• Swift and iOS development (4+ years professional experience)
• UIKit and SwiftUI
• Xcode and Apple ecosystem
• Complex mobile systems architecture and design
• Payment integrations and Apple platform integrations
• Performance optimization and security best practices
• Testing frameworks and code quality
• Cross-functional collaboration