470 jobs for "Data Scientist I"

Research Scientist - TikTok Search (Generative AI) - Global Frontier Tech Recruitment Program - 2027 Start (PhD)

At TikTok - San Jose

Posted on Apr 17

View job Apply on company site

Research Scientist - E-commerce Recommendation(LLM Applications) - Global Frontier Tech Recruitment Program - 2027 Start (PhD)

At TikTok - San Jose

Posted on Apr 17

View job Apply on company site

Research Scientist - E-commerce Recommendation(LLM Applications) - Global Frontier Tech Recruitment Program - 2027 Start (PhD)

At TikTok - Seattle

Posted on Apr 17

View job Apply on company site

Research Scientist - Risk Control Vertical LLM Foundation and Agent - Global Frontier Tech Recruitment Program - 2027 Start (PhD)

At TikTok

Posted on Apr 16

View job Apply on company site

Research Scientist - End-to-End Generative Search Technology Based on Pre-Trained Foundation Models - Global Frontier Tech Recruitment Program - 2027 Start (PhD)

At TikTok

Posted on Apr 16

View job Apply on company site

Applied Scientist - Business Integrity - Global Frontier Tech Recruitment Program - 2027 Start (PhD)

At TikTok

Posted on Apr 16

View job Apply on company site

Research Scientist Graduate (TikTok Recommendation-Large Recommender Models) - 2026 Start (PhD)

At TikTok - San Jose

Posted on Jun 17

View job Apply on company site

Applied Scientist- TikTok E-Commerce Recommendation

At TikTok - Seattle

Posted on Oct 19

View job Apply on company site

Research Scientist, TikTok E-Commerce Recommendation

At TikTok - San Jose

Posted on Jul 24

View job Apply on company site

Research Scientist, TikTok E-Commerce Recommendation

At TikTok - Seattle

Posted on Jul 24

View job Apply on company site

TikTok

Research Scientist - TikTok Search (Generative AI) - Global Frontier Tech Recruitment Program - 2027 Start (PhD)

San Jose$218,400 – $480,000Posted Apr 17, 2026

Apply on company site View full job

Why you should apply for a job to TikTok:

4.5/5 in overall job satisfaction
4.5/5 in supportive management
100% say women are treated fairly and equally to men
100% would recommend this company to other women
100% say the CEO supports gender diversity

Ratings are based on anonymous reviews by Fairygodboss members. See all reviews ›

Responsibilities

About the team
The TikTok Search team is responsible for delivering a world-class search experience across TikTok's global ecosystem. Our mission is to connect users with the most relevant and high-quality content through advanced technologies in search ranking, recommendation, and multimodal understanding. As a campus hire, you will collaborate with top engineers and researchers to solve challenging problems at scale, working across the full stack of search-from content understanding and retrieval to ranking and user experience optimization.

Project Overview, Challenges & Value
With the rapid evolution of pre-trained large models, TikTok Search is advancing toward a new paradigm of AI-native search. Traditional search systems face increasing limitations when handling massive-scale data, multimodal content (video, text, image), and complex user intents. This project focuses on building a next-generation generative search system powered by large models to significantly enhance search intelligence and user experience.
Key focus areas include:
- Integrating large models with ranking systems to improve personalization and relevance.
- Developing end-to-end generative search models based on multimodal pretraining.
- Exploring large model-driven agent frameworks to better support complex, ambiguous, and multi-turn search scenarios.
Key challenges include:
- Personalized ranking: Fully leveraging multimodal signals beyond traditional model capacity.
- Ultra-large-scale retrieval and ranking: Scaling search systems to efficiently handle hundreds of billions of candidates.
- Complex query understanding: Accurately interpreting long, ambiguous, and multi-turn queries to improve user satisfaction.
Project Value:
- Technical Value: Drive innovation in large model-powered search architecture and enable agent-based AI search systems.
- Business Value: Significantly improve search relevance and user satisfaction, strengthening TikTok's search engagement and long-term growth.

We are looking for talented individuals to join our team in 2027. As a graduate, you will get opportunities to pursue bold ideas, tackle complex challenges, and unlock limitless growth. Launch your career where inspiration is infinite at our Company.

Successful candidates must be able to commit to an onboarding date by end of year 2027. Please state your availability and graduation date clearly in your resume.

Responsibilities
- Develop next-generation AI search systems using large models (LLMs).
- Improve ranking, personalization, and relevance in search.
- Build generative and multimodal search models (video, text, image).
- Explore LLM-based agents for complex and multi-turn queries.
- Optimize large-scale retrieval and ranking performance.
- Collaborate cross-functionally to ship research into production.

Qualifications

Minimum Qualifications
- Individuals who are completing or recently completed a PhD in Software Development, Computer Science, Computer Engineering, or a related technical discipline.
- Solid foundation in machine learning, deep learning, or information retrieval.
- Experience in at least one of the following areas: LLMs, search/recommendation systems, ranking, NLP, or multimodal learning.
- Strong programming skills in Python and familiarity with ML frameworks (e.g., PyTorch, TensorFlow).
- Demonstrated research ability through publications, projects, or internships.
- Strong problem-solving skills and ability to work in a fast-paced, collaborative environment.

Preferred Qualifications
- Track record of research contributions through publications, open-source projects, or impactful research work.
- Hands-on experience with large-scale systems, distributed training, or real-world ML deployment.
- Experience with search, recommendation, or ads ranking systems in industry or research.
- Experience with multimodal models (video, image, text) or generative AI applications.
- Familiarity with LLM fine-tuning, alignment (e.g., RLHF), or agent-based systems.
- Strong interest in building end-to-end AI systems from modeling to production.
- Internship or research experience at leading technology companies or research organizations.
- Modeling experience in one or more of the following areas: Ads, Search engine, Recommender System, NLP/CV.
- Have a solid foundation in algorithms related to LLMs, including but not limited to comprehensive learning and practical experience in areas such as single-modal/multi-modal LLM application and deployment.
- Strong publications record in accredited conferences or journals (e.g., ICLR, NeurIPS, ICML, ACL, EMNLP, NAACL, CVPR, ICCV and ECCV) .

Job Information

[For Pay Transparency] Compensation Description (annually)

The base salary range for this position in the selected city is $218400 - $480000 annually.

Compensation may vary outside of this range depending on a number of factors, including a candidate's qualifications, skills, competencies and experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.

Benefits may vary depending on the nature of employment and the country work location. Employees have day one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short-term and long-term disability coverage, life insurance, wellbeing benefits, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).

The Company reserves the right to modify or change these benefits programs at any time, with or without notice.

For Los Angeles County (unincorporated) Candidates:

Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state, and local laws including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Our company believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of the conditional offer of employment:

1. Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues;

2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and

3. Exercising sound judgment.

Responsibilities

Qualifications

Qualifications

Minimum Qualifications
- Individuals who are completing or recently completed a PhD in Software Development, Computer Science, Computer Engineering, or a related technical discipline.
- Solid foundation in machine learning, deep learning, or information retrieval.
- Experience in at least one of the following areas: LLMs, search/recommendation systems, ranking, NLP, or multimodal learning.
- Strong programming skills in Python and familiarity with ML frameworks (e.g., PyTorch, TensorFlow).
- Demonstrated research ability through publications, projects, or internships.
- Strong problem-solving skills and ability to work in a fast-paced, collaborative environment.

Preferred Qualifications
- Track record of research contributions through publications, open-source projects, or impactful research work.
- Hands-on experience with large-scale systems, distributed training, or real-world ML deployment.
- Experience with search, recommendation, or ads ranking systems in industry or research.
- Experience with multimodal models (video, image, text) or generative AI applications.
- Familiarity with LLM fine-tuning, alignment (e.g., RLHF), or agent-based systems.
- Strong interest in building end-to-end AI systems from modeling to production.
- Internship or research experience at leading technology companies or research organizations.
- Modeling experience in one or more of the following areas: Ads, Search engine, Recommender System, NLP/CV.
- Have a solid foundation in algorithms related to LLMs, including but not limited to comprehensive learning and practical experience in areas such as single-modal/multi-modal LLM application and deployment.
- Strong publications record in accredited conferences or journals (e.g., ICLR, NeurIPS, ICML, ACL, EMNLP, NAACL, CVPR, ICCV and ECCV) .

About TikTok

TikTok is the leading destination for short-form mobile video and our mission is to inspire creativity and bring joy.

Size: 10,000+ employees
Industry: Technology: Consumer Internet

View company profile