**Role Number:** 200649857-0836

**Summary**
Join us at the forefront of redefining how people interact with their devices. On the Siri team we’re solving the challenge of building and shipping powerful LLMs that shape the way millions of Apple customers get things done every day. As a Senior Applied Scientist, you will craft the future of UI Control by developing powerful yet compact LLMs that bring personalized, private, and low-latency experiences to users. This is a high-impact role for a hands-on applied scientist who thrives at the intersection of cutting-edge AI development and product delivery.

**Description**
In this role you’ll drive the design, development and delivery of large language models that power the core of Siri. You will lead research and engineering efforts in model post-training techniques that create powerful UI control, tool calling and compelling conversational models that run within the constraints of mobile hardware.
You’ll collabo...