Tech Lead - TikTok Ecommerce Recommendation Algo
TikTok
San Jose, CA · Posted November 13, 2026
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TikTok has filed one layoff notice in the last twelve months, covering 250 workers, most recently August 2026. These are public filings with state labor departments, and an open role can sit alongside them. See the filings
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About the job
E-commerce is a new and fast growing business that aims at connecting all customers to excellent sellers and quality products on TikTok Shop, through E-commerce live-streaming, E-commerce short videos, and commodity recommendation. We are a group of applied machine learning engineers and data scientists that focus on E-commerce recommendations. We are developing innovative algorithms and techniques to improve user engagement and satisfaction, converting creative ideas into business-impacting solutions. We are interested and excited in applying large scale machine learning to solve various real-world problems in E-commerce.
Responsibilities: • Lead the team to design, build, optimize large-scale (10 million to 100 million) e-commerce recommendation algorithm pipeline • 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. • Build, expand and manage the global e-commerce recommendation team from scratch • Collaborate with strategy team, product managers, policy team and ops team to define products and drive initiatives from engineering viewpoints
Minimum Qualifications: • Bachelor's degree in Computer Science or related technical field • 3+ years of working experience in one of the following fields: recommendation system, online advertising, information retrieval, natural language processing, machine learning, large-scale data mining, or related fields. • Experience in leading an engineering team • Strong sense of responsibility and good at communication and teamwork • Passionate about solving complex and challenging problems