LLM/Multimodal AI Engineer Intern (TikTok Search) - 2027 Start Singapore Technology - Algorithm Undergraduate/Master Intern - 2027 Start

TikTok; Singapore; On-site; SGD 20,000 - 31,000; Part time

Job summary

TikTok is seeking an LLM/Multimodal AI Engineer Intern (TikTok Search) to contribute to planning, memory, tool-use, and evaluation modules for search-related tasks under mentorship.

You will work on LLM-based query understanding, multimodal learning, and RAG optimization, collaborating with cross-functional teams on real-world product improvements for TikTok Search.

Qualifications

• Currently pursuing an Undergraduate/Master's in Software Development, Computer Science, or a related technical discipline.
• Proficient in at least one programming language such as C++ or Python, with a solid foundation in algorithms and data structures.
• Basic understanding of machine learning and deep learning fundamentals, with coursework, projects, or research in NLP, CV, multimodal learning, recommendation, search, or related domains.
• Familiarity with LLM fundamentals, such as prompt engineering, supervised fine-tuning, retrieval-augmented generation, or model evaluation.
• Strong analytical and problem-solving skills, with curiosity and willingness to learn new technologies.
• Able to commit to an internship and collaborate effectively in a fast-paced, cross-functional environment.

Responsibilities

• Participate in the development of AI Search Agent components under mentor guidance, including planning, memory, tool-use, and evaluation modules for search-related scenarios.
• Support LLM-based query understanding tasks, such as intent analysis, multi-turn conversation understanding, prompt optimization, and offline evaluation of model outputs.
• Assist in experiments related to LLM adaptation for search scenarios, including data preparation, model fine-tuning, reinforcement learning feedback analysis, and metric tracking.
• Contribute to multimodal search projects by supporting visual representation learning, video understanding, data processing, and model evaluation tasks.
• Help optimize RAG and LLM pipelines, including retrieval data construction, ranking feature analysis, answer quality evaluation, and structured result presentation.
• Work closely with mentors and cross-functional partners to prototype, validate, and iterate on algorithm modules, contributing to product and system improvements in TikTok Search.

Skills

C++

Python

ML basics

NLP

CV

Multimodal

Prompt engineering

RAG

RLHF

Experimentation

Education

Undergraduate/Master's in CS/Software

Tools

Git

PyTorch

TensorFlow

Job description

Discover a career that energizes and excites you every day.

@2026 TikTok

Algorithm

LLM/Multimodal AI Engineer Intern (TikTok Search) - 2027 Start

Location:

Employment Type:

Intern

Job Code:

A105541A

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Responsibilities

• Participate in the development of AI Search Agent components under mentor guidance, including planning, memory, tool-use, and evaluation modules for search-related scenarios
• Support LLM-based query understanding tasks, such as intent analysis, multi-turn conversation understanding, prompt optimization, and offline evaluation of model outputs
• Assist in experiments related to LLM adaptation for search scenarios, including data preparation, model fine-tuning, reinforcement learning feedback analysis, and metric tracking
• Contribute to multimodal search projects by supporting visual representation learning, video understanding, data processing, and model evaluation tasks
• Help optimize RAG and LLM pipelines, including retrieval data construction, ranking feature analysis, answer quality evaluation, and structured result presentation
• Work closely with mentors and cross-functional partners to prototype, validate, and iterate on algorithm modules, contributing to product and system improvements in TikTok Search

Qualifications

Minimum Qualifications

• Currently pursuing a Undergraduate/ Master's in Software Development, Computer Science, Computer Engineering, or a related technical discipline
• Proficient in at least one programming language such as C++ or Python, with a solid foundation in algorithms and data structures
• Basic understanding of machine learning and deep learning fundamentals, with coursework, projects, or research experience in NLP, CV, multimodal learning, recommendation, search, or related domains
• Familiarity with LLM fundamentals, such as prompt engineering, supervised fine-tuning, retrieval-augmented generation, or model evaluation
• Strong analytical and problem-solving skills, with curiosity and willingness to learn new technologies
• Able to commit to an internship and collaborate effectively in a fast-paced, cross-functional environment

Preferred Qualifications

• Experience with relevant lab research, coursework projects, or personal projects in LLM, Agent, RAG, multimodal learning, search, recommendation, or advertising systems
• Hands-on exploration of LLM/Agent-related technologies, such as RAG optimization, SFT/RLHF experiments, Agent framework development, planning or memory modules, or evaluation pipelines
• Experience participating in technical competitions, open-source projects, research prototypes, or other practical explorations in AI-related fields is a plus
• Familiarity with search, recommendation, information retrieval, ranking, or large-scale machine learning systems is a plus
• Strong learning ability, ownership, and communication skills, with enthusiasm for applying cutting-edge AI technologies to real-world product scenarios

Job Information

About TikTok

TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok's global headquarters are in Los Angeles and Singapore, and we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

Why Join Us

Inspiring creativity is at the core of TikTok's mission. Our innovative product is built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and bring joy - a mission we work towards every day.

We strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. Every challenge is an opportunity to learn and innovate as one team. We're resilient and embrace challenges as they come. By constantly iterating and fostering an \"Always Day 1\" mindset, we achieve meaningful breakthroughs for ourselves, our company, and our users. When we create and grow together, the possibilities are limitless. Join us.

Diversity & Inclusion

TikTok is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At TikTok, our mission is to inspire creativity and bring joy. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach. We are passionate about this and hope you are too.