Sr. Machine Learning Engineer - Answers, Knowledge & Information (AKI)
Core
Building and deploying machine learning models to improve search quality, query understanding, and document ranking for local business discovery in Siri and Spotlight.
Role type
Senior IC machine learning engineer (search & recommendation)
Builds
Production ML models for retrieval, ranking, and reranking in Apple's search ecosystem
Domain
Consumer technology, search, natural language processing
Deliverable
production ML models
Required skills
information retrieval, natural language processing, deep learning, learning-to-rank, embedding models, contrastive learning, multi-task learning, reinforcement learning, A/B testing, distributed systems
Preferred skills
advanced AI research, mathematics
Technologies
LLMs, ranking models, embedding frameworks
Responsibilities
Own the full ML development cycle from prototyping to production deployment; Lead development of models for retrieval, ranking, and query understanding; Mentor junior engineers and architect ML systems; Translate product requirements into modeling and engineering tasks
Seniority
Senior, hands-on IC with technical leadership
