Summary

🔹 NLP Data Scientist specializing in Large Language Models (LLM), focusing on model development and deployment, with expertise in fine-tuning, alignment, deployment, and quantization.

🔹 Develops scalable and efficient LLM solutions for e-commerce, leveraging foundational models to enhance buyer experience and improve customer service efficiency.

Years of Experience

3 years

Residence

Singapore

Title

Senior Engineer | NLP Data Scientist (LLM)

Work Experience

Shopee

Senior Machine Learning Engineer | NLP Data Scientist (LLM)

August 2022 - Now

Shopee - Marketplace Intelligence - Chatbot

  • Led the development of Shop AI Assistant, a seller-facing chatbot powered by Large Language Models (LLMs), deployed across 8 key markets and supporting millions of stores.
  • Highlighted by Sea Group’s CEO in the Q1 2025 financial earnings call as a core innovation enhancing seller productivity. Delivered measurable business impact: +70% CSAT, +2.00% order conversion, +10.00% deflection rate, significantly reducing live agent workload.

Tencent

Machine Learning Engineer (Intern)

April 2021 - October 2021

Tencent News - Recommendation Algorithm Center

Worked on rerank model optimization and feature improvements to enhance personalization and CTR.

Projects

LLM Shop AI Assistant - Topic Recognition

Senior Engineer | Data Scientist

Developed a Prompt-Guided Multi-Classification Model to route customer inquiries efficiently, achieving 80.44% in-topic accuracy and increasing deflection rate by 10.72%, reducing unnecessary agent transfers.

LLM Shop AI Assistant - Product Q&A

Engineer | Data Scientist

Designed an LLM-powered Product Q&A to answer buyers' product-related inquiries, ensuring buyer satisfaction exceeded 70%. Handled 33.9% of chatbot traffic, improving CSAT and reducing live agent escalations.

LLM Shop AI Assistant - Sales Guide

Engineer | Data Scientist

Implemented Function Call-based query parsing for personalized product recommendations, boosting conversion rate by +2% and increasing recommendation CTR by 5%, enhancing the shopping experience.

News Recommendation Model Optimization

Engineer (Intern)

undefined 2021 - undefined 2021

Optimized the double tower model structure, filtered and added effective features, resulting in a 0.8% increase in click-through rate (CTR).

Education

Institute of Automation, Chinese Academy of Sciences (CASIA)

Computer Science and Technology - Master's

2019 - 2022

  • First-Class Scholarship ; GPA: 3.71/4.0
  • Research & Publications: "Sleep Stage Classification Using Single-Channel EEG based on CNN and Transformer"
  • Granted Patent: "Human-Computer Interaction Method and System Based on Electrooculography (EOG) Signals"

China University of Mining and Technology

Electronic Information Science and Technology - Bachelor's

2015 - 2019

  • Outstanding Graduate Award ; First-Class Scholarship ; GPA: 3.75/4.0 (Top 5%)
  • Research & Publications: ""Near-infrared spectrum of coal origin identification based on SVM algorithm"
  • Competitions & Awards: Honorable Mention, MCM/ICM Contest in Modeling (COMAP)

Skills

  • Programming Languages

    Python (proficient, including experience with PyTorch and TensorFlow)

    SQL (Presto)

    Familiar with Shell, Bash, and common scripting languages

  • Large Language Model

    Model fine-tuning (SFT) & alignment (DPO, KTO)

    Quantization, inference acceleration, multimodal models

    Mainstream open-source LLM frameworks

Languages

Language

Chinese

Mother Tongue

Language

English

Professional (C1-Level)