iOS Engineer, Ad Formats

About the Role

We’re looking for an iOS Engineer to help build the native iOS experiences and client-side systems that power how ads are structured, rendered, and delivered across OpenAI’s ads ecosystem. This role sits within the Ads Formats team, which owns the creative rendering and presentation layer for next-generation ads experiences across different surfaces and media types.

You’ll help build the iOS infrastructure and tooling that support formats such as text, image, video, native, conversational, and interactive ads, while ensuring they render reliably and perform efficiently across platforms. You’ll work closely with backend, Product, Design, Research, and Safety partners to shape iOS architecture that supports user-first, privacy-preserving monetization experiences within ChatGPT and OpenAI’s broader mobile ecosystem.

In this role, you will

• Build and ship ads format experiences on iOS, including text, image, video, native, conversational, and interactive ad surfaces.
• Design and maintain shared iOS frameworks and primitives for ad rendering, creative presentation, media handling, format validation, and policy-aware UX patterns.
• Own complex iOS systems end-to-end across UI architecture, networking, local persistence/state, observability, rendering performance, and release processes.
• Build robust integrations with Apple platform and ecosystem components, including media playback, deep links, app lifecycle behavior, accessibility, privacy controls, and device capabilities.
• Optimize performance, reliability, and responsiveness at global scale, including rendering quality, scrolling performance, startup time, media load latency, network resiliency, battery usage, and crash-free sessions.
• Establish and evolve testing and quality systems, including unit, integration, snapshot/UI, automated regression, and release validation workflows.
• Collaborate with Product, Design, Research, backend, and Safety to deliver ads experiences that meet OpenAI’s highest standards for safety, privacy, fairness, and policy compliance.
• Provide technical leadership through architecture reviews, mentoring, and setting engineering standards across iOS ads formats and monetization surfaces.

You might thrive in this role if you

• Have 4+ years of professional software engineering experience with significant iOS ownership.
• Have a proven track record shipping high-quality iOS applications in production, especially for user-facing, performance-sensitive, or trust-sensitive experiences.
• Are fluent in Swift and experienced with Apple’s ecosystem, including Xcode, SwiftUI, UIKit, and modern iOS architecture patterns.
• Have owned complex mobile systems end-to-end across architecture, delivery, instrumentation, quality, and operations.
• Have experience building polished mobile UI systems, media-rich experiences, rendering frameworks, design systems, or reusable product infrastructure.
• Enjoy making pragmatic architectural tradeoffs while keeping systems maintainable, testable, and scalable.
• Care deeply about performance, reliability, privacy, and user experience, and you bring a high bar for polish.
• Thrive in 0→1 environments where systems, architecture, and user experiences must be defined from scratch.
• Bonus: Have experience with ads formats, creative rendering systems, media delivery, native ads, conversational products, mobile monetization, or large-scale consumer mobile applications.

Location

This role is exclusively based in our San Francisco HQ. We offer relocation assistance to new employees.