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Apple Senior Machine Learning Engineer - Large 
United States, California, Sunnyvale 
506012541

Today
As a Senior Machine Learning Engineer, your mission will be to lead advancements in Siri’s language understanding capabilities using state-of-the-art LLM technologies. Your responsibilities will include:
  • Designing and developing the foundational agentic system that enables Siri to translate natural language queries into tool calls and engage in multi-turn conversations with users.
  • Collaborating with researchers, software engineers, and product designers to integrate AI innovations into Siri’s user experience.
  • Staying at the forefront of research in LLMs, NLP, and AI, and converting cutting-edge advancements into practical, user-facing improvements.If you are passionate about pushing the limits of conversational AI and want to see your work impact millions of users globally, we’d love to hear from you.
    • Advanced degree (MSc/PhD) in Machine Learning, Computer Science, or a related quantitative field; or a BSc with 3+ years of relevant industry experience.
    • Strong proficiency in Python and ML frameworks such as PyTorch and Hugging Face.
    • Proven ability to design and implement scalable ML pipelines, including preprocessing, training, and deployment in production.
    • Excellent problem-solving, analytical, and collaborative skills.
    • Solid understanding of NLP evaluation metrics, with experience benchmarking and optimizing model performance.
    • Hands-on experience building and deploying large-scale machine learning models, particularly in generative AI, LLMs, Retrieval-Augmented Generation (RAG), or agentic systems.
    • Expertise in data generation and augmentation, including synthetic data creation, active learning strategies, and constructing robust datasets for model training.
    • Published research or notable contributions in LLMs, NLP, or AI is highly desirable.
    Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.