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Apple

Staff Applied Scientist, UI Control Models

Cupertino, CA$216,200 – $324,800Posted 28 days ago

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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.

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 as a tech lead, leading teams of size 5-10.

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.

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.

Pay & Benefits

At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $216,200 and $324,800, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

About Apple

Working at Apple means doing more than you ever thought possible and having more impact than you ever imagined.

Size: 10,000+ employees
Industry: Technology

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