Senior ML Engineer: LLM & Multimodal (E-commerce)

TikTok USDS Joint Venture; San Jose (CA); On-site; USD 187,000 - 360,000; Full time

Job summary

TikTok USDS Joint Venture LLC is hiring for a senior ML/NLP engineer to build LLM-based systems for e-commerce content, risk governance, and merchant interactions. You will work on processing diverse data and advancing multimodal models used in video and product contexts.

Ideal candidates have strong ML/NLP/CV background, experience with large language models, and a passion for secure, scalable systems in a fast-growing tech environment.

Qualifications

• MS or PhD in CS/AI/Math.
• 5+ years in ML/NLP/CV.
• Proficiency in C++, Python, Go or Java.

Responsibilities

• Architect and develop LLM-based systems for high-dimensional unstructured data.
• Define and implement semantic understanding frameworks (intent classification, entity extraction).
• Apply techniques like Instruction Tuning, RLHF/DPO, Contextual Prompt Engineering.

Skills

Machine Learning

NLP

Computer Vision

System Design

Research

Education

MS or PhD in Computer Science / AI / Mathematics

Tools

C++

Python

Go

Java

Job description

TikTok USDS Joint Venture LLC is hiring for a senior ML/NLP engineer to build LLM-based systems for e-commerce content, risk governance, and merchant interactions. You will work on processing diverse data and advancing multimodal models used in video and product contexts.

Ideal candidates have strong ML/NLP/CV background, experience with large language models, and a passion for secure, scalable systems in a fast-growing tech environment.