Machine Learning Engineer, Recommendations - USDS

TikTok is a leading destination for short-form mobile video, and they are seeking a Machine Learning Engineer to join their U.S. Data Security division. The role involves developing large-scale recommendation algorithms and systems to enhance user engagement and satisfaction through innovative machine learning techniques. Responsibilities Participate in building large-scale (10 million to 100 million) recommendation algorithms and systems, including commodity recommendations, live stream recommendations, short video recommendations etc in TikTok Build long and short term user interest models, analyze and extract relevant information from large amounts of various data and design algorithms to explore users' latent interests efficiently Design, develop, evaluate and iterate on predictive models for candidate generation and ranking(eg. Click Through Rate and Conversion Rate prediction) , including, but not limited to building real-time data pipelines, feature engineering, model optimization and innovation Design and build supporting/debugging tools as needed Skills Bachelor's degree or higher in Computer Science or related fields Strong programming and problem-solving ability This role requires a PhD or Master's degree with relevant experience in applied machine learning, familiar with one or more of the algorithms such as Collaborative Filtering, Matrix Factorization, Factorization Machines, Word2vec, Logistic Regression, Gradient Boosting Trees, Deep Neural Networks, Wide and Deep etc Experience in Deep Learning Tools such as tensorflow/pytorch Experience with at least one programming language like C++/Python or equivalent Experience in recommendation system, online advertising, information retrieval, natural language processing, machine learning, large-scale data mining, or related fields Publications at KDD, NeurlPS, WWW, SIGIR, WSDM, ICML, IJCAI, AAAI, RECSYS and related conferences/journals, or experience in data mining/machine learning competitions such as Kaggle/KDD-cup etc Benefits Medical, dental, and vision insurance 401(k) savings plan with company match Paid parental leave Short-term and long-term disability coverage Life insurance Wellbeing benefits 10 paid holidays per year 10 paid sick days per year 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure) 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.