Graduate AI Engineer - LLMs & Multimodal Search

TikTok; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

TikTok is seeking a PhD-level algorithm researcher to join our Search Team in Singapore. You will develop and optimize large-scale search systems, combining retrieval, ranking, and ML with NLP and multimodal signals.

You will collaborate with product, engineering, and research teams to translate research into production solutions, evaluate models, and drive impact ahead of onboarding by year-end. Strong Python/C++ and ML foundations are essential.

Qualifications

• PhD required or recent completion in a related technical field.
• Solid programming skills in Python or C++.
• Strong understanding of machine learning and deep learning fundamentals.
• Hands-on experience in search/retrieval, ranking, recommender systems, NLP or ML.
• Ability to translate research ideas into working solutions.

Responsibilities

• Develop and optimize algorithms for large-scale search systems, including query understanding, retrieval, ranking, reranking, and relevance modeling.
• Apply machine learning, deep learning, and foundation model technologies to improve search relevance, personalization, and user satisfaction.
• Explore LLM-powered search technologies, including generative search, retrieval-augmented generation, search agents, long-context understanding, and multi-turn search scenarios.
• Build and improve multimodal search capabilities by leveraging text, image, video, audio, user behavior signals.
• Collaborate with product, engineering, and research teams to identify key search quality issues and drive algorithm improvements from research to production.
• Conduct data analysis, model evaluation, and online/offline experiments to improve search experience and business impact.

Skills

Python

C++

Machine Learning

Search/Retrieval

NLP

LLMs

Research

Problem Solving

Education

PhD in Software Development / Computer Science / Computer Engineering

Job description

TikTok is seeking a PhD-level algorithm researcher to join our Search Team in Singapore. You will develop and optimize large-scale search systems, combining retrieval, ranking, and ML with NLP and multimodal signals.

You will collaborate with product, engineering, and research teams to translate research into production solutions, evaluate models, and drive impact ahead of onboarding by year-end. Strong Python/C++ and ML foundations are essential.