[Remote] Machine Learning Engineer Intern (Monetization Technology - Ads Core Global)- 2026 Start (PhD)

Note: The job is a remote job and is open to candidates in USA. TikTok is the leading destination for short-form mobile video, and they are seeking talented individuals for an internship in their Ads Core ML Team. The role involves optimizing advertising efficiency, researching advanced delivery systems, and collaborating with product and business teams globally. Responsibilities Assist in optimizing efficiency across the entire advertising funnel, including Recall&Rough-sort, Fine-sort(CTR/CVR), format/creative personalization and system resource allocation Research & develop a global advanced advertising delivery system through frontier technologies, including ML/DL, RL, LLM and also scaling law in ads recommendation Design & Set up system framework and standard to continuously improve overall efficiency and meet different vertical business needs Work with product and business teams from various scenarios with global impact Skills Currently pursuing a PhD Degree in Computer Science, Mathematics, Statistics, or a related technical discipline with 2+ years research or machine learning modeling experience Able to commit to working for 12 weeks during Summer 2026 Solid programming skills, proficient in C/C++ and Python Familiar with basic data structure and algorithms Familiar with Linux development environment Good analytical thinking capability Essential knowledge and skills in statistics Good theoretical grounding in deep learning concepts and techniques Familiar with architecture and implementation of at least one mainstream machine learning programming framework (TensorFlow/Pytorch/MXNet), familiar with its architecture and implementation mechanism PhD candidate focused on a statistical learning related field Graduating December 2026 onwards with the intent to return to degree program after the completion of the internship Good knowledge in one of the following fields: Factorization Machine, Uplift Modeling, Diffusion Models, Reinforcement Learning Basic understanding of large recommendation system and ads serving system concepts Benefits Day one access to health insurance Life insurance Wellbeing benefits 10 paid holidays per year Paid sick time (56 hours if hired in first half of year, 40 if hired in second half of year) Housing allowance Company Overview TikTok is a short-form video entertainment app and social network platform. It is a sub-organization of ByteDance. It was founded in 2003, and is headquartered in Los Angeles, California, USA, with a workforce of 10001+ employees. Its website is Company H1B Sponsorship TikTok has a track record of offering H1B sponsorships, with 979 in 2025, 601 in 2024, 387 in 2023, 322 in 2022, 133 in 2021, 72 in 2020. Please note that this does not guarantee sponsorship for this specific role.