[Remote] Machine Learning Scientist Intern (TikTok-Content Ecology—LLM application) - 2026 Start (PhD)

Note: The job is a remote job and is open to candidates in USA. TikTok is the leading destination for short-form mobile video. The Content Ecology Algorithm Team is seeking a Machine Learning Scientist Intern to contribute to AI innovations in LLMs, NLP, and Computer Vision, enhancing TikTok’s growth and user engagement through advanced algorithms and models.

Responsibilities

• Develop and optimize LLM, NLP, CV, and recommendation models to improve TikTok’s content ecosystem
• Implement multimodal AI solutions, integrating video, text, and speech understanding
• Optimize LLM-powered search, discovery, and content recommendation systems for better user engagement
• Train and fine-tune deep learning models using TensorFlow, PyTorch, or other ML frameworks
• Deploy and scale machine learning solutions in a distributed computing environment
• Work closely with AI researchers, software engineers, and business teams to apply AI technologies effectively

Skills

• PhD in Computer Science, Machine Learning, AI, or a related field
• Strong programming skills in Python, C++, or similar languages
• Hands-on experience with deep learning frameworks such as TensorFlow or PyTorch
• Solid understanding of machine learning, NLP, CV, or recommendation algorithms
• Experience with distributed computing and optimizing AI models for real-world applications
• Ability to apply machine learning techniques to enhance business and user experiences
• Publications in top AI/ML conferences (NeurIPS, ICML, CVPR, ACL, etc.) or strong contributions to open-source AI projects

Benefits

• Interns have 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)
• Interns who are not working 100% remote may also be eligible for housing allowance

Company Overview

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