Senior Machine Learning iOS Platform Engineer — Responsible AI and Safety

Apple Inc.; Seattle (WA); On-site; USD 216,000 - 325,000; Full time

Benefits offered by this job

Medical & dental coverage

Apple stock programs

Tuition reimbursement

Job summary

Apple Inc. in the San Francisco Bay Area is seeking a Senior Machine Learning iOS Platform Engineer — Responsible AI and Safety to own the integration of safety mitigation assets across on-device foundation models and server-side inference.

You will bridge Swift client engineering with ML deployment, shaping architecture and delivering high-performance, safe experiences for users worldwide. You will lead a team of engineers, collaborate with design, legal and regulatory stakeholders, and drive

Qualifications

• 12+ years of professional experience, with at least 5+ years in iOS/macOS development.
• Experience shipping mobile frameworks used by teams outside your own.
• Proven ability to lead architecture of complex, high‑performance production systems.
• Excellent analytical, problem solving and communication skills.

Responsibilities

• Define and evolve the technical architecture for multimodal workflows with focus on safety.
• Lead design and implementation of features leveraging hardware and software capabilities.
• Mentor engineers and foster best development practices.
• Collaborate with cross‑functional teams to translate safety needs into performant software.
• Optimize performance for large‑scale image processing and real‑time interactions.
• Contribute to deployment pipelines and tooling as needed.

Skills

iOS/macOS development

Swift

Objective-C

System architecture

Mentorship / leadership

Multimodal workflows

Education

Bachelor's degree in CS/Math/Statistics or related field

Tools

Core ML

ML runtimes

LLM token streaming

On-device to cloud deployment

Job description

Senior Machine Learning iOS Platform Engineer — Responsible AI and Safety

San Francisco Bay Area, California, United States Machine Learning and AI

Join Us in Shaping the Future of Generative AI at Apple!Are you passionate about making AI systems safer, more inclusive, and globally representative? Apple is seeking an expert Client Engineer to own the integration of our Responsible AI mitigation assets across the full deployment surface, from on-device foundation models running on Apple Silicon to server-side inference on Private Cloud Compute (PCC).In this role, you will be a pivotal technical leader, bridging Swift client engineering and ML deployment, driving the architectural vision, design, and implementation of how safety classifiers, guardrail models, and mitigation policies are shipped, invoked, and streamed alongside our generative features. You will take end-to-end ownership, from initial concept and rapid prototyping to delivering robust, high-performance, and maintainable solutions that minimize unintended consequences across people, systems, and society while elevating feature capabilities and the overall user experience. Together, we’ll anticipate challenges, measure real-world impact, and deliver trusted, high‑quality AI experiences to users around the globe.

Description

Our team leads Responsible AI initiatives for global generative AI products, operating at the intersection of policy, product, and GenAI. We build the safety classifiers, content filters, and policy enforcement layers that protect users from unintended model behavior. This role is about getting those assets into users' hands reliably, on the device or in the cloud, at the latency and quality bar Apple expects. We are seeking candidates who will work closely with multiple stakeholders, ranging from design, engineering, legal and regulatory to ensure our safeguards advance both user protection and product innovation. You will work on defining mitigation architectures, owning the implementation and overseeing the integration in production. Additionally, you will contribute to modeling, tooling and frameworks, as well as dataset, and evaluation methods to monitor, diagnose failures, and improve the safety of generative models throughout the deployment lifecycle.

Responsibilities

• Architectural Leadership: Defining and evolving the technical architecture for complex multimodal workflows, ensuring scalability, performance, and future extensibility.
• Feature Innovation: Leading the design and implementation of cutting‑edge features that leverage Apple's unique hardware and software capabilities.
• Technical Mentorship & Growth: Guiding and mentoring a team of talented engineers, fostering best development practices, and contributing to the growth and culture of the team.
• Cross‑Functional Collaboration: Partnering closely with other engineering teams to translate Safety needs into same and performant software experiences.
• Performance Optimization: Ensure our features set the benchmark for speed and efficiency, by expertly optimizing for large‑scale image processing and real‑time interactions, resulting in an unparalleled user experience.
• Contribute to deployment pipeline and tooling efforts as needed

Minimum Qualifications

• 12+ years of professional experience, with at least 5+ years in iOS / macOS application development in both Objective C and Swift
• Expertise in Apple's Core iOS and Foundation frameworks
• BS in Computer Science, Mathematics, Statistics, or a related field, or equivalent industry experience
• Experience in shipping impactful mobile frameworks used by others outside your direct team
• Experience leading the architecture and development of complex, high‑performance production systems
• Demonstrated ability to technically lead projects, mentor engineers, and drive cross‑functional initiatives from concept to delivery
• Excellent analytical, problem solving and communication skills

Preferred Qualifications

• Working knowledge of on‑device ML runtimes (Core ML, MLX, or equivalent) and the model‑export lifecycle: converting trained models into shippable assets, and loading them efficiently at runtime
• Working knowledge of frontier/LLM models including token‑streaming inference, tokenization, and buffering strategies
• Experience building applications that utilize modern ML/AI technology

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.

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

At Apple, we believe accessibility is a fundamental human right. You’ll find that idea reflected in everything here — in our culture, our benefits and our digital tools. By welcoming as many perspectives as possible, we help you build a career where you feel like you belong.
Learn about accessibility in Apple’s workplace
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Apple accepts applications to this posting on an ongoing basis.