Senior Machine Learning Engineer, Apple Search & Knowledge Platforms

As a member of our fast-paced group, you’ll have the unique and rewarding opportunity to shape upcoming products from Apple. We are looking for highly motivated machine learning engineers and researchers having strong machine learning and deep learning fundamentals with hands-on experience in fine-tuning deep learning and large language models. Minimum Qualifications 2+ years of experience working with Deep learning or LLM model development for various NLP tasks and RAG applications including prompt engineering, training data collection and generation, model fine-tuning and model evaluation. Experience working with Python and at least one of the deep learning frameworks such as TensorFlow, PyTorch, or JAX. Master’s in Computer Science, Artificial Intelligence, Machine Learning, or a related field. Preferred Qualifications PhD in Computer Science, Artificial Intelligence, Machine Learning, or a related field. 4+ years of experience with large-scale model training, optimization, and deployment One or more scientific publications in various conferences and journals Outstanding communication and interpersonal skills with ability to work with cross-functional teams. 1+ year of experience in various state-of-the-art techniques related to LLM fine-tuning in 1 or more of the following areas: Supervised Fine-tuning (SFT) with Rejection Sampling Preference-based fine-tuning techniques (e.g RLHF, Reward model, DPO, PPO, GRPO etc.) Parameter efficient fine-tuning techniques (e.g LoRA) Hallucination reduction and factual accuracy improvements Designing and implementing safety guardrails