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Full-time
postgraduate degree
Posted 8d ago
~40 hrs/week
Responsibilities
Lead the design and delivery of compact LLMs to power Siri's UI control and conversational capabilities on mobile hardware. Collaborate with cross-functional teams to move AI innovations from prototype to production while setting the team's technical direction.
Requirements
Requires a Master's or PhD in Computer Science or ML with over 7 years of industry experience shipping ML products. Must have deep expertise in LLM post-training methods and proficiency in Python and deep learning frameworks.
Full job description
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 Staff 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 collaborate closely with researchers, software engineers and product teams to move innovations from prototype to production. This includes identifying and applying post-training techniques, advancing model efficiency and contributing to the end-to-end model lifecycle process.
This position emphasizes technical leadership through action, hands-on innovation and impact. You will be responsible for setting technical directions for the team. Our team values rapid iteration and delivering impactful results. The ideal candidate will have a passion for applied research, strong modeling expertise, good software engineering skills and a desire to get things done.
Minimum Qualifications
Masters or PhD in Computer Science, Machine Learning Engineering or equivalent professional experience
7+ years of hands-on industry experience and a proven track record of shipping ML-powered products or features, ideally involving LLMs. Extensive experience with the ML development loop, with expertise in model architectures, data curation, training policies and evaluation.
Deep expertise in LLM/VLM post-training methods, including supervised fine-tuning, and reinforcement learning.
Proficiency in Python and one of the deep learning frameworks (such as PyTorch, JAX, or TensorFlow).
Excellent communication: strong interpersonal, verbal and written skills.
Preferred Qualifications
Experience developing AI agents capable of complex reasoning, planning, tool use and UI control in diverse environments.
Experience developing small LLMs for constrained or edge devices.
Experience building thoughtful benchmarks and environments to evaluate UI control agents.
Deep understanding of model efficiency and deployment trade-offs in production environments.
Experience with multi-modal foundation models.
Experience developing ML systems for natural language understanding or digital assistants.
We’re a diverse collective of thinkers and doers, continually reimagining what’s possible to help us all do what we love in new ways. And the same innovation that goes into our products also applies to our practices — strengthening our commitment to leave the world better than we found it. This is where your work can make a difference in people’s lives. Including your own.
Apple is an equal opportunity employer that is committed to inclusion and diversity. Visit apple.com/careers to learn more.
Offices: 1 Apple Park Way, Cupertino, California 95014, US
How much do Science & Research jobs in California pay?
Based on 11509 listings with disclosed salaries, most science & research jobs in California pay between $101k–$250k per year. Individual offers vary with seniority, company size, and specialization.
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