Swift LLM API Engineer

3 weeks ago• Cupertino, CA
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About Us

Working at Apple means doing more than you ever thought possible and having more impact than you ever imagined.
Size: 10000+ employees

Industry: Technology, Information Technology, Software, Consumer Goods & Services

Join the Swift AI Frameworks team and create the best APIs for AI models. You'll collaborate with passionate and creative colleagues to meet ambitious goals in an environment that not only encourages, but requires constant curiosity and growth.

Description:

As a member of the Swift AI Frameworks team, you will implement new features in the Foundation Models framework and craft elegant APIs that surprise and delight our developers. You will be responsible for bringing your ideas to life through all stages of their development: from initial research, to API design, to model evaluation, to testing and development in Swift, to documentation and internal dogfooding. You'll join us in energetic discussions of each other's work and ideas, alongside collaborators possessing a variety of different perspectives and domain expertises.

You'll also have the opportunity to collaborate with experts throughout Apple including: ML researchers, systems engineers, user interface designers, tools engineers, and technical writers. Curious and enterprising individuals who take an expansive view of their role will thrive in this multi-disciplinary environment!

Preferred Qualifications

Bachelorʼs Degree in Computer Science or equivalent experience

Experience with any of the following is a plus, but not required: LLM serving, On-device ML systems, Multi-modal LLMs, Swift API design patterns, User interface technologies (e.g. SwiftUI, UIKit), Programming language design and implementation, Technical writing and Open-source software projects

Minimum Qualifications:

Interest in machine learning, LLMs and generative AI

Proficiency with Swift (or the capacity to become proficient quickly)

The ability to work collaboratively and explain complex ideas clearly

High standards for quality and attention to detail

The desire to learn and grow, keeping pace with cutting edge technologies

Experience with at least one of the following: Framework and API development, LLM tool calling and agentic workflows, Model evaluation, LLM inference algorithms (e.g. constrained decoding, retrieval-augmented generation)

Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant .

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Client-provided location(s): Cupertino, CA

Job ID: apple-200636551-0836_rxr-660

Employment Type: OTHER

Posted: 2026-01-07T19:13:49
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Parental Benefits

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Financial and Retirement

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