Drimva

TikTok

Research Scientist Graduate (Conversational AI) - 2027 Start (PhD)

San Jose, California · Full-time · Posted Oct 28, 2026

Experience
No specific number of years stated.
Education
Completing or recently completed a PhD degree in Computer Science, Electrical Engineering, Mathematics, Statistics or a related discipline.

About the job

Build and improve TikTok’s production conversational AI agent system for global e-commerce customer service, including its runtime, training, evaluation, and experimentation systems.

What you'll do

  • Develop agent runtime, context and memory management, tools, skills, and production safety controls.
  • Build post-training and data-flywheel systems that turn conversations into training, evaluation, and retrieval signals.
  • Create rigorous evaluation, self-improvement, and online experimentation systems for agent changes.

What they ask for

  • Completing or recently completed a PhD in Computer Science, Electrical Engineering, Mathematics, Statistics, or a related discipline.
  • Strong Python plus one of C++ / Go / Rust / Java.
  • Solid ML / DL / NLP fundamentals and hands-on experience with LLMs or agents.
  • Basic statistical literacy and ability to turn research papers or engineering blogs into working code.

Nice to have

  • Built an agent runtime, memory/context system, RAG or tool-use agent, or fine-tuned/post-trained model.
  • Relevant hands-on experience in post-training, agent systems, evaluation, self-improving systems, inference/serving, or multilingual NLP; publications, competition results, or notable open-source contributions are also valued.

Tools

Python, C++, Go, Rust, Java, vLLM, TensorRT-LLM, MCP

AI focus

Build a self-evolving conversational AI agent system, including agent runtime and memory, LLM post-training, tools, evaluation, and online experimentation.

Model-written summary · the original posting is authoritative

First seen Oct 28, 2026 · Last verified Nov 6, 2026 (UTC)