Drimva

TikTok

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

Seattle, Washington · Full-time · Posted Oct 28, 2026

Education
PhD in CS/AI/Math/Quantitative degree or a related discipline; completing or recently completed.

About the job

Build and ship production conversational AI agents for TikTok e-commerce customer service, improving their runtime, memory, training, evaluation, safety, and performance across 30+ languages.

What you'll do

  • Develop agent runtime, context and memory systems, tools, and safety controls.
  • Build post-training, evaluation, and self-improving workflows using conversation data and rigorous experimentation.
  • Own an end-to-end product surface and ship it to production, measuring outcomes such as CSAT and resolution or containment rate.

What they ask for

  • Completing or recently completed a PhD in CS, AI, Math, a quantitative degree, or a related discipline.
  • Strong Python and one of C++, Go, Rust, or Java.
  • Solid ML, DL, and NLP fundamentals, with hands-on LLM or agent experience.
  • Basic statistical literacy and ability to turn research or engineering writing into working code.

Nice to have

  • Experience building agent runtimes, memory or context systems, RAG or tool-use agents, or fine-tuned/post-trained models.
  • Relevant post-training, agent systems, evaluation, experimentation, self-improving systems, inference/serving, publications, competition results, or open-source contributions.

Tools

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

AI focus

Develop conversational AI agents, including agent runtimes, memory and context engineering, post-training, evaluation, tool use, safety, and self-improving feedback loops.

Model-written summary · the original posting is authoritative

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