PhD Research Scientist Intern: Global Ads ML & RL

TikTok Inc.; San Jose (CA); Hybrid; USD 68,000 - 97,000; Full time

Job summary

TikTok Inc. is seeking PhD interns to contribute to our Ads Core ML team, focusing on automatic delivery products and a world-leading ranking framework. You will work on ML/DL models, RL, and LLM-driven ad delivery systems, with cross-functional teams and global impact.

The internship blends hands-on research with professional development, industry collaboration, and exposure to production-grade delivery pipelines that scale across multiple markets.

Qualifications

• Pursuing a PhD in CS, Math, Statistics, or related field.
• Strong programming in C/C++ and Python; Linux experience.
• Solid knowledge of statistics and ML basics.
• Experience with ML frameworks (TensorFlow/PyTorch/MXNet).
• Strong analytical and problem-solving skills.

Responsibilities

• Assist in optimizing efficiency across the advertising funnel.
• Research and develop a global advanced advertising delivery system using ML/DL, RL, LLM.
• Design and set up system framework and standards to improve efficiency.
• Collaborate with product and business teams globally.

Skills

C/C++

Python

Statistics

Deep learning

Analytical thinking

Linux

Education

PhD in CS/Math/Statistics or related

Tools

TensorFlow

PyTorch

MXNet

Job description

TikTok Inc. is seeking PhD interns to contribute to our Ads Core ML team, focusing on automatic delivery products and a world-leading ranking framework. You will work on ML/DL models, RL, and LLM-driven ad delivery systems, with cross-functional teams and global impact.

The internship blends hands-on research with professional development, industry collaboration, and exposure to production-grade delivery pipelines that scale across multiple markets.