AIML Researcher/Engineer - Foundation Model Post-Training

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Apple is a leading technology company seeking an AIML Researcher/Engineer to shape the future of their large language model efforts. The role involves transforming models into intelligent assistants and tackling core training challenges to enhance user experience across Apple products.


Responsibilities

  • Design and iterate on end-to-end post-training strategies (including Reinforcement Learning) to unlock model capacities toward achieving specific model behaviors
  • Pioneer novel algorithms for preference optimization, model steering, and safety
  • Drive our data strategy by researching methods for high-quality human and synthetic data generation, automated data filtering, and curriculum learning to improve instruction following and reasoning
  • Design robust evaluation methodologies to measure model helpfulness, factuality, and utility, moving beyond static benchmarks to accurately capture real-world performance
  • Partner closely with pre-training teams to inform architecture choices, and with product teams to translate user requirements into model capabilities

Skills

  • Demonstrated expertise in deep learning with a focus on LLMs, post-training, or reinforcement learning, backed by a strong record of academic or real-world accomplishments in these or closely related domains
  • Proficient programming skills in Python and a major deep learning framework such as JAX or PyTorch
  • Masters/PhD, or equivalent practical experience, in Computer Science, Machine Learning, or a related technical field
  • Experience training state-of-the-art large models at scale, with familiarity in distributed training challenges and trade-offs
  • Experience improving model performance on complex reasoning tasks (math, coding, logic)
  • Experience with various transformers architectures and its transformations
  • Strong communication skills and a passion for working cross-functionally across Research and Product teams

Company Overview

  • Apple is a technology company that designs, manufactures, and markets consumer electronics, personal computers, and software. It was founded in 1976, and is headquartered in Cupertino, California, USA, with a workforce of 10001+ employees. Its website is https://www.apple.com.

    • Company H1B Sponsorship

  • Apple has a track record of offering H1B sponsorships, with 1629 in 2026, 6535 in 2025, 3766 in 2024, 3939 in 2023, 4822 in 2022, 4060 in 2021, 3656 in 2020. Please note that this does not guarantee sponsorship for this specific role.

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