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Research Scientist - TikTok E-Commerce Recommendation Foundation

Seattle, United States of America💼 Full-time🗓 2026-09-28

Core

Building unified Foundation Models for multi-scenario recommendation systems, integrating LLMs, multimodal understanding, and generative capabilities to advance from retrieval to re-ranking.

Role type

Senior IC research scientist (generative recommendation & foundation models)

Builds

Unified Foundation Models and intelligent recommendation agents

Domain

E-commerce, Recommendation Systems, Large Language Models (LLMs), Generative AI

Deliverable

production ML models

Required skills

Machine learning theory, Deep learning, Information retrieval, Python, PyTorch, Model training, Inference optimization

Preferred skills

Large-scale recommendation system development, Large-model training, LLM/VLM research, Reinforcement learning, Pre-training and post-training of Foundation Models

Technologies

LLMs, VLMs, PyTorch, Reinforcement Learning

Responsibilities

Build and optimize cross-scenario shared Foundation Models; Advance event-sequence-driven generative recommendation paradigms; Apply LLM technologies across retrieval, ranking, and re-ranking stages; Explore integration of LLMs/VLMs with recommendation systems; Research end-to-end generative recommendation and system optimization methods.

Seniority

Senior, hands-on IC

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