> Markdown version of [/jobs/ext/4389909-software-engineer-ios](https://www.wearedevelopers.com/jobs/ext/4389909-software-engineer-ios). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer, iOS - **Company:** Xoxo AI Inc - **Location:** San Francisco, CA, United States - **Experience:** Expert - **Salary:** $250,000 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, IOS Applications, Apple IOS, Software Quality, Machine Learning, Software Engineering, Data Streaming, Systems Integration, Pixel Perfect, React Native, Real-time Rendering - **Published:** October 31, 2026 - **Apply:** https://www.careerbuilder.com/job-details/software-engineer-ios-san-francisco-ca--3a508611-06c9-4690-be66-0c9557849b0b ## About the Role Software Engineering, iOS, iOS, Mobile Devices, React Native, Prototyping, Artificial Intelligence (AI), Product Development, Startup, Memory Hardware, * 3+ years shipping production mobile apps with a consistently elite quality bar. * Deep expertise in React Native and Swift, with strong instincts for architecture and long-term maintainability. * Demonstrated ability to turn a highly visual design system into a fast, pixel-perfect product UI (components, interaction patterns, accessibility). * Proven track record making mobile apps feel instant under real-world constraints (startup time, rendering, memory, battery, networking) and knowing where to look when things slow down. * High-ownership builder who moves quickly without sacrificing code quality, reliability, or craft. * Excited to work in-office in San Francisco 5 days a week., * Experience at an early-stage startup (company outcome doesn't matter). * Experience shipping in high-velocity consumer categories with rapid growth (consumer social, gaming, other consumer apps). * Comfort bridging into native iOS/Android when React Native needs it. * Experience integrating ML/AI-powered functionality into mobile product experiences. * Advanced mobile media/graphics experience (3D, real-time rendering, audio, video, streaming). A link to shipped apps, code samples, or technical writing is strongly encouraged. ## Description We're hiring a seasoned iOS engineer to build XOXO's consumer app with a groundbreaking interface for intelligence. This role is for a truly strong engineer who can own the full mobile surface area end-to-end: architecture, performance, polish, and a highly visual design system that feels intentional in every interaction. You don't need a specific background-what matters is your drive: you're relentlessly high-ownership, you move fast without cutting corners, and you want to build a mobile product that sets a new bar for craft and performance. What You'll Do * Design and ship the first versions of our React Native app, taking it from prototype to production. * Translate a highly visual design system into reusable components, motion, and interaction patterns with fluid performance. * Build new product surfaces that incorporate modern AI/ML capabilities in ways that feel natural on mobile. * Drive performance work across the app: rendering, startup, memory, battery, networking, and perceived speed. * Set the bar for mobile engineering quality (testing, instrumentation, release discipline) and partner closely across the stack to ship end-to-end.