Staff Machine Learning Performance Engineer

Job Description

Apple is seeking a Machine Learning Performance Engineer to optimize machine learning models used by Siri and improve user experience.

Requirements

• Understanding of Transformer and LLM architectures
• Strong understanding of Operating System, Compiler, and Computer Architecture fundamentals
• Experience in analyzing, identifying, and optimizing performance bottlenecks
• Bachelors degree in Computer Science, Engineering, or related discipline, or 10+ equivalent industry experience

Responsibilities

• Analyze and optimize the performance of machine learning models and systems used by Siri
• Develop and implement strategies for model tuning, parameter optimization, and efficient resource usage
• Conduct performance benchmarking and develop tooling and metrics to measure model performance
• Collaborate with feature and product teams to consult on modeling decisions
• Collaborate with hardware and software teams to integrate research findings into product implementation

Benefits

• Employees at Apple are often offered comprehensive benefits that support physical and mental well-being—flexible medical plans, confidential counseling, onsite wellness centers at major campuses, and resources for fitness and daily life. Families typically receive fertility support, paid parental leave with gradual return, caregiving leave, and dependent-care guidance, while financial perks commonly include stock grants (with purchase discounts), 401(k) matching, and income-protection coverage. Employees also see robust time off, Apple University learning and tuition reimbursement, donation matching and paid volunteer hours, and deep product and partner discounts.