Staff Applied Scientist, UI Control Models
Core
Design, develop, and deliver large language models (LLMs) for UI control, tool calling, and conversational capabilities within mobile hardware constraints for the Siri product.
Role type
Staff Applied Scientist (LLM/Model Efficiency)
Builds
Production LLMs for UI control and tool calling on mobile devices
Domain
Consumer AI / Mobile / Large Language Models
Deliverable
production ML models
Required skills
LLM/VLM post-training methods, supervised fine-tuning, reinforcement learning, model architectures, data curation, training policies, evaluation, Python, deep learning frameworks (PyTorch, JAX, TensorFlow), model efficiency, software engineering
Preferred skills
AI agents with reasoning and planning, small LLMs for edge devices, tech leadership, benchmarking environments, multi-modal foundation models, NLU systems
Technologies
PyTorch, JAX, TensorFlow
Responsibilities
Lead research and engineering in model post-training techniques, collaborate with researchers and engineers to move innovations to production, set technical directions for the team, advance model efficiency, contribute to the end-to-end model lifecycle
Seniority
Staff, technical leadership & hands-on IC