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. What the day-to-day looks like: 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. 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