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Machine Learning Engineer Graduate (E-Commerce Content Recommendation - Generative & Large Recommendation Model) - 2027 Start (PhD)

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

Core

Building and rewriting an industrial recommendation system for TikTok Shop's global e-commerce video and image-text content using LLM foundations to serve hundreds of millions of users.

Role type

PhD-level Machine Learning Engineer (Generative Recommendation)

Builds

End-to-end recommendation stack (retrieval, ranking, blending) for short-video, livestream, and product scenarios

Domain

E-Commerce, Large Language Models, Recommendation Systems

Deliverable

production ML models

Required skills

LLMs/foundation models, NLP, CV, RL, recommendation/search/ads, math behind models, algorithms and data structures, problem decomposition

Preferred skills

CUDA/Triton kernel development, large-scale distributed training, LLM post-training (SFT/RLHF/DPO/GRPO), agent-system construction, inference acceleration, top-tier publications (KDD, NeurIPS, etc.)

Technologies

LLMs, MLLMs, RQ-VAE, SID, GRPO, CUDA, Triton, KV caching, speculative decoding

Responsibilities

Scale recommendation models to billions of parameters; build one-stage generative retrieval; inject world knowledge via reasoning models; optimize training/inference to hardware limits; implement coding agents for R&D; conduct original research on open problems

Seniority

PhD, Research/Engineering Lead

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