LLM & Multimodal AI Scientist Intern

TikTok; San Jose, Northern (CA, KY); Hybrid; USD 50,000 - 83,000; Full time

Benefits offered by this job

Health insurance

Life insurance

Wellbeing benefits

10 paid holidays per year

Housing allowance

Job summary

TikTok is offering an internship as a Machine Learning Scientist Intern in Content Ecology with a 2027 start for PhD students. The role focuses on developing LLM/MLLM, agent frameworks, and multimodal AI solutions to enhance TikTok’s content ecosystem.

Strong Python/C++ skills and experience with TensorFlow/PyTorch are required. Located in San Jose, this 12-week summer internship provides health insurance benefits, paid holidays, and housing support where applicable.

Qualifications

• PhD in Computer Science, Machine Learning, AI, or a related field.
• Able to commit to working for 12 weeks during Summer 2027.
• 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 fundamentals and the modern AI stack.
• Strong proficiency in integrating AI tools into knowledge discovery and research workflows.

Responsibilities

• Develop and optimize LLM/MLLM, Agent, NLP, CV, and recommendation models to improve TikTok’s content ecosystem.
• Design, build, and optimize advanced Agentic AI frameworks, focusing on core components like planning, tool use, skills, and memory.
• Implement multimodal AI solutions, integrating video, text, and speech understanding.
• 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

Python

C++

TensorFlow

PyTorch

LangChain

Education

PhD in Computer Science/Machine Learning/AI

Tools

LlamaIndex

Distributed Computing

Job description

TikTok is offering an internship as a Machine Learning Scientist Intern in Content Ecology with a 2027 start for PhD students. The role focuses on developing LLM/MLLM, agent frameworks, and multimodal AI solutions to enhance TikTok’s content ecosystem.

Strong Python/C++ skills and experience with TensorFlow/PyTorch are required. Located in San Jose, this 12-week summer internship provides health insurance benefits, paid holidays, and housing support where applicable.