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Sr. Machine Learning Engineer - Answers, Knowledge & Information (AKI)

Apple· Machine Learning and AI
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Santa Clara, CA$184.7k - $324.8kFull-timePosted 1mo ago

About the role

Senior ML engineer role focused on search, ranking, and knowledge QA for Apple’s Geo domain within Siri, Spotlight, and Maps. Involves end-to-end ML development, deployment at scale, and leadership in ML systems for local information retrieval and query understanding.

Responsibilities

  • Own the entire ML development cycle from opportunity analysis, exploration, and prototyping to data collection, feature engineering, training, evaluation, and deployment in production.
  • Lead the development of machine learning models to improve search quality across retrieval, ranking, reranking, and query understanding.
  • Improve search quality and experience by leveraging techniques such as learning-to-rank, embedding models, contrastive learning, multi-task learning, and reinforcement learning where appropriate.
  • Mentor junior engineers and provide technical leadership in architecting ML systems and designing ML models.
  • Understand product requirements, then translate them into modeling tasks and engineering tasks.

Qualifications

  • 5+ years of experience in information retrieval, natural language processing, machine learning, or deep learning.
  • Deep understanding of machine learning theory, including supervised learning, ranking models, embeddings, representation learning, and evaluation metrics.
  • Proven ability to apply advanced ML techniques to improve search relevance and retrieval quality at scale.
  • Comfortable leading experimentation, offline evaluation, and online A/B testing for iterative improvements in search quality.
  • Excellent interpersonal skills, the ability to work independently as well as as part of a team.
  • Master’s Degree in Computer Science or equivalent experience in machine learning or a related field.

Skills

Required:Information retrievalNatural language processingMachine learning theoryExperimentation & A/B testing

Benefits

  • Various Apple benefits including comprehensive medical and dental coverage, retirement benefits, discounted products and free services, and reimbursement for certain educational expenses.
  • Stock programs including discretionary RSU awards and Employee Stock Purchase Plan.
  • Potential discretionary bonuses or commission payments and relocation assistance.
Last updated Oct 2, 2026. Interested? Apply on the company site.

About Apple

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

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