Collaboration with language experts and QA to refine modeling approach in consideration of language-specific requirementsMS or PhD in Computer Science or related field with at least 2 years of industry experience Strong Python programming skills, with experience developing production-quality Python modules Solid background in machine learning, data science, natural language processing, or statisticsExperience building and maintaining model pipelines end-to-end, from data curation to evaluation Ability to design and perform experiments that bring ML and NLP research ideas to production Familiarity with LLMs, such as SFT, RHLF, prompt engineering, data synthesis, automatic evaluation, and RAG Excellent written and verbal communication skills History of developing in Python and / or Swift Record of publications, innovations, and/or leadership. We are responsible for the machine learning and software (non-UI) development for several user-facing Apple Intelligence features, including Writing Tools, Summarization, Found In Apps, and Messages/Mail Smart Replies.