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Senior Staff Machine Learning Engineer, Apple Search & Knowledge Platforms

Santa Clara, United States of America💼 Full-time🗓 2026-04-01 → 2026-09-28

Core

Lead R&D and engineering to build and improve summarization capabilities for Apple users using on-device and cloud LLMs, including world knowledge-seeking and web page gist generation.

Role type

Senior Staff Machine Learning Engineer (Generative AI & Summarization)

Builds

On-device LLM models, cloud summarization models, groundedness models, safety models, and software frameworks for context integration.

Domain

Consumer Technology / Generative AI / Natural Language Processing

Deliverable

production ML models

Required skills

Leading engineering/applied research in NLP, delivering SOTA generative AI models, full ML life cycle delivery, on-device LLM development, cloud LLM inference, RAG, LLM post-training, RLHF/RLAIF, reward modeling, policy optimization, hallucination reduction

Preferred skills

LLM post-training, advanced RL-based methods, RLHF/RLAIF, reward model development, policy optimization algorithms, hallucination reduction methods, engineering implementation of RL models

Technologies

LLMs, RAG, RLHF, RLAIF, reward models, policy optimization algorithms

Responsibilities

Drive E2E R&D and engineering for high-quality summarization, develop SOTA LLM-based generative models, create software frameworks for fast and cost-efficient inference, integrate Apple ecosystem with LLM infrastructure, devise product vision and strategy, collaborate with organizational partners

Seniority

Senior Staff, hands-on IC with leadership

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