Software Engineer - Model Performance - Special Projects

You'll work alongside a tight group of engineers, designers, and researchers to bring AI features from early prototype to product. This is 0-to-1 work - from a rough idea on a whiteboard to software running on real devices. You'll have a lot of autonomy in how you get there.

• You've shipped software that people relied on, and you learned something from every hard call along the way
• You're someone who unblocks yourself. When the path isn't clear, you figure it out - whether that means reading the source, building a prototype, or pulling in the right people
• Comfortable with ambiguity and excited by problems that don't have an obvious answer yet
• You work well across teams and build trust with partners in design and engineering
• You make the people around you better - through mentoring, shaping technical direction, and the way you approach hard problems
• You've already brought AI into how you write code - and you're always looking for the next way to use it
• 5+ years of development experience, strong CS fundamentals, and a B.S. in Computer Science or significant equivalent experience. iOS and Swift experience is a plus - but if you're strong in another platform, you'll ramp quickly here.

Preferred Qualifications

• Deep experience in one or more iOS/macOS domains: system services, UI frameworks, concurrent application architecture, or performance optimization
• Practical knowledge of how LLMs work at the lowest level of model design and execution
• Close to the frontier. You're the person your team comes to when a new model drops or a new technique emerges
• A sharp eye for detail. You notice what's off and you know when it's right

We're a small team at Apple betting on what comes next. We believe AI will fundamentally change how people interact with their devices - and we're looking for software engineers who want to build that future. We can't say much about what we're building for our customers. What we can say: the problems are genuinely new and the potential reach is enormous. Beyond the work, we're a collaborative, humble, and curious group that loves learning from each other and building together.