TikTok
Senior Machine Learning Engineer - Search Recommendation, E-commerce Search Growth (Seattle)
Seattle, Washington · Senior · Full-time · Posted Oct 28, 2026
- Experience
- 5+ years of work experience in machine learning.
- Education
- Bachelor or advanced degree in computer science or a related technical discipline.
About the job
Develop and optimize TikTok E-commerce search recommendation systems and machine learning models to improve search traffic and user shopping experience.
What you'll do
- Improve search recommendation services and models across TikTok and TikTok Mall.
- Optimize hyperscale recommender systems across recall and ranking stages.
- Advance short-text and general recommendation, especially the intersection of recommendation and NLP, and mentor teammates.
What they ask for
- 5+ years of work experience in machine learning.
- Good product sense focused on user experience and e-commerce.
- Domain knowledge or work experience in modern recommendation, search, advertising, or e-commerce.
- Bachelor or advanced degree in computer science or a related technical discipline.
Nice to have
- Excellent coding skills and solid knowledge of data structures and algorithms.
- Strong analysis, modeling, and problem-solving skills.
Tools
machine learning, NLP, CV
AI focus
Build and optimize machine learning-based e-commerce search recommendation systems, including hyperscale models and recommendation-NLP interactions.
Model-written summary · the original posting is authoritative