Machine Learning iOS Platform Engineer

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., 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

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

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

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 $175,000 and $308,500, 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

Join Us in Shaping the Future of Generative AI at Apple!