Apple · 4 days ago
Swift LLM API Engineer
Cupertino, CA
Full-time
Onsite
Mid Level
$181K/yr - $318K/yrApple is seeking a Swift LLM API Engineer to join the Swift AI Frameworks team and create APIs for AI models. The role involves implementing new features, designing APIs, and collaborating with various experts within the company to enhance the Foundation Models framework.
AppsArtificial Intelligence (AI)BroadcastingDigital EntertainmentFoundational AIMedia and EntertainmentMobile DevicesOperating SystemsTVWearables
Responsibilities
Implement new features in the Foundation Models framework
Craft elegant APIs that surprise and delight developers
Bring ideas to life through all stages of development: from initial research, to API design, to model evaluation, to testing and development in Swift, to documentation and internal dogfooding
Engage in energetic discussions of each other’s work and ideas alongside collaborators with diverse perspectives and domain expertise
Collaborate with experts throughout Apple including ML researchers, systems engineers, user interface designers, tools engineers, and technical writers
Qualification
Required
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)
Preferred
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
Benefits
Comprehensive medical and dental coverage
Retirement benefits
A range of discounted products and free services
Reimbursement for certain educational expenses — including tuition
Discretionary bonuses or commission payments
Relocation
Company
Apple
Apple is a technology company that designs, manufactures, and markets consumer electronics, personal computers, and software.
Founded in 1976
10001+ employees
H1B Sponsorship
Apple has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (6998)
2024 (3766)
2023 (3939)
2022 (4822)
2021 (4060)
2020 (3656)
Funding
Current Stage
Public CompanyTotal Funding
$5.67BKey Investors
Berkshire HathawayMicrosoftSequoia Capital
2025-05-05Post Ipo Debt· $4.5B
2025-01-16Post Ipo Debt· $0.31M
2021-04-30Post Ipo Equity
Leadership Team
Tim Cook
CEO
Craig Federighi
SVP, Software Engineering
Recent News
Venrock
2025-12-01
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Mac Daily News
2025-09-25
Company data provided by crunchbase