TikTok
Machine Learning Engineer - E-commerce Recommendation
Seattle, Washington · Full-time · Posted Oct 28, 2026
- Education
- Bachelor’s degree or higher in Computer Science or related fields.
About the job
Build and improve large-scale TikTok Shop recommendation systems for products, live streams, and short videos to increase user engagement and satisfaction.
What you'll do
- Develop recommendation algorithms and systems, including candidate generation and ranking models for click-through and conversion prediction.
- Build models of users’ long- and short-term interests and analyze data to identify latent interests.
- Create and iterate on predictive models, real-time data pipelines, features, optimization methods, and supporting or debugging tools.
What they ask for
- Bachelor’s degree or higher in Computer Science or a related field.
- Strong programming and problem-solving ability.
- Applied machine learning experience and familiarity with one or more listed algorithms, such as Collaborative Filtering, Logistic Regression, or Deep Neural Networks.
- Experience with TensorFlow or PyTorch and at least one programming language such as C++ or Python, or equivalent.
Nice to have
- Experience in recommendation systems, online advertising, information retrieval, NLP, machine learning, or large-scale data mining.
- Relevant publications or experience in data-mining or machine-learning competitions.
Tools
TensorFlow, PyTorch, C++, Python, Collaborative Filtering, Matrix Factorization, Factorization Machines, Word2vec
AI focus
Applied machine learning for large-scale e-commerce recommendations, user-interest modeling, candidate generation, ranking, and click-through and conversion prediction.
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