Applied Scientist, Search, E-Commerce Alliance
TikTok
Seattle, WA · Posted November 13, 2026
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Where Seattle, WA ranks
Where Seattle, WA placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Cities with the most jobs that do not need a four-year degree in the Pacific Northwest316 jobs · of 8
- #1Best cities for software and engineering jobs in the Pacific Northwest1,776 openings · of 14
- #2Best cities for energy and utilities pay after cost of living$180k · of 18
- #2Best cities for entry-level jobs that want AI skills in the Pacific Northwest17% · of 12
- #2Best cities for AI-skill jobs in the Pacific Northwest26% · of 17
- #2Best cities for software and engineering jobs in the West Coast1,776 openings · of 60
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Among data scientists, AI is already used for a large share of the tasks. Measured exposure for data scientists: 46% (high).
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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
The e-commerce alliance team aims to serve merchants and creators in the e-commerce platform to meet merchants' business indicators and improve creators' creative efficiency. By cooperating with merchants and creators, we aim to provide high-quality content and a personalized shopping experience for TikTok users, create efficient shopping tools at seller centers, and promote cooperation between merchants and creators.
Position Overview: We are looking for an Applied Scientist to join our Global E-Commerce Alliance Team. The individual will be responsible for driving innovative and practical solutions that impact our search system through machine learning models. As part of the role, the Applied Scientist will work with cross-functional teams, influencing decision-making across multiple teams within the business. The successful candidate will have strong expertise in machine learning and have the ability to leverage this to improve our search systems.
Responsibilities:
- Work collaboratively with cross-functional teams to develop and implement advanced machine learning algorithms to improve the search and recommendation systems. - Define the scope and design end-to-end machine learning models for search systems. - Analyze complex, large-scale data to extract insights and to identify potential areas where our search system can be improved. - Create, test, implement, and iterate on machine learning models to optimize search functions and improve the user experience. - Stay up-to-date with the latest developments in machine learning and search systems. - Present complex findings and algorithms to a non-technical audience and influence decision-making. - Follow strict data governance and privacy policies to ensure that user data is handled with the utmost care.
Minimum Qualifications - PhD, Master or Bachelor's degree in Computer Science, Statistics, Mathematics, or related quantitative field. - Extensive experience in machine learning, deep learning, data mining, or artificial intelligence. - Strong programming skills in Python, C++, Java, GO, or similar. - Strong knowledge of search algorithms, information retrieval, and ranking systems. - Excellent problem-solving and analytical skills. - Strong communication skills with the ability to explain complex concepts to a non-technical audience.
Preferred Qualifications - Experience with Natural Language Processing (NLP) techniques. -Proven modeling/algorithms competition records on Kaggle or top conferences’ challenges. -Proven programming competition records on ICPC, IOI or USACO. - Experience working with recommendation systems, computational advertising, search engine, E-commerce search systems. - Publication records in machine learning or related conferences or journals is a plus.