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TikTok · 2 weeks ago

Machine Learning Scientist Intern - Global E-Commerce Content Recommendation - 2026 Summer (PhD)

United States

Internship

Remote

Intern

Start in 2026 Summer

TikTok is the leading destination for short-form mobile video, and they are seeking a Machine Learning Scientist Intern for their Global E-Commerce Content Recommendation team. This role involves building industry-leading recommendation systems and exploring generative recommendation techniques to enhance user experience and platform security.

Content CreatorsContent DiscoveryMedia and EntertainmentSocial MediaVideo

H1B Sponsor Likely

Responsibilities

Build industry-leading recommendation system, improving user experience, content ecosystem and platform security

Explore generative recommendation techniques, including Diffusion Models, prompt learning, and multimodal content generation, to unlock new capabilities in content discovery

Build multi-model and cross-scenario systems enabling unified recommendation across livestreams, short videos, and search

Deliver end-to-end machine learning solution to address critical product challenges

Own the full stack machine learning system and optimize algorithms and infrastructure to improve recommendation performance

Work with cross functional teams to design product strategies and build solutions to grow TikTok in important markets

Qualification

Deep learning frameworksMachine learning researchRecommendation systemsC/C++ programmingPython programmingData structuresSoft skills

Required

Currently pursuing a PhD with a background in computer science, machine learning, or similar fields

Good knowledge of theoretical and empirical research in addressing research problems

Solid knowledge and experience with at least one popular deep learning framework (e.g., PyTorch, TensorFlow) and familiarity with deep neural network architectures

Preferred

Research experience in one or more of the following fields: applied machine learning, machine learning infrastructure, large-scale recommendation system, market-facing machine learning product

Strong first-author publications record in top AI conferences or journals(e.g., NeurIPS, ICML, ICLR, ACL, EMNLP, NAACL etc.)

Proficient in C/C++, Python, and shell programming languages, and have a deep understanding of data structure and algorithm design

Internship experience in an AI research organization

Benefits

Day one access to health insurance

Life insurance

Wellbeing benefits

10 paid holidays per year

Paid sick time (56 hours if hired in first half of year, 40 if hired in second half of year)

Housing allowance

Company

TikTok

Glassdoor3.4

TikTok is a short-form video entertainment app and social network platform. It is a sub-organization of ByteDance.

Founded in 2003

Los Angeles, California, USA

10001+ employees

https://www.tiktok.com

H1B Sponsorship

TikTok has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

Represents job field similar to this job

Trends of Total Sponsorships

2025 (979)

2024 (601)

2023 (387)

2022 (322)

2021 (133)

2020 (72)