AI Engineer (LLM/Multimodal) Graduate（TikTok Search） - 2027 Start (PhD)
Core
Building and optimizing large-scale search engine systems using information retrieval, NLP, Computer Vision, and foundation models to enhance user search experience.
Role type
PhD-level AI Engineer (LLM/Multimodal Search)
Builds
Full-stack search engine system including query understanding, retrieval, ranking, reranking, and relevance modeling
Domain
Search technology, Large Language Models, Multimodal learning
Deliverable
production ML models
Required skills
Python, C++, Machine Learning, Deep Learning, Search/Retrieval, Ranking, NLP, Multimodal learning, LLMs
Preferred skills
Research experience, Publications, Open-source contributions, Generative search, RAG, Search agents, Long-context understanding
Technologies
Foundation models, Generative search, RAG, Search agents
Responsibilities
Develop algorithms for query understanding, retrieval, ranking, and relevance modeling; Apply ML and foundation models to improve search relevance; Explore LLM-powered search technologies; Build multimodal search capabilities; Collaborate on technical solutions and drive production deployment; Conduct data analysis and model evaluation.
Seniority
PhD, Research-to-Production IC
