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I am a Machine Learning Engineer with over 6 years of experience in data modeling, machine learning, deep learning, and natural language processing. I also bring more than 7 years of experience solving problems with data analytics and am adept at turning insights into action by collaborating with cross-functional teams to deliver impactful solutions for diverse business cases.…

Xin

Data Scientist, AI Engineer, AI Developer

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I am a Machine Learning Engineer with over 6 years of experience in data modeling, machine learning, deep learning, and natural language processing. I also bring more than 7 years of experience solving problems with data analytics and am adept at turning insights into action by collaborating with cross-functional teams to deliver impactful solutions for diverse business cases.…

Available to hire

I am a Machine Learning Engineer with over 6 years of experience in data modeling, machine learning, deep learning, and natural language processing.

I also bring more than 7 years of experience solving problems with data analytics and am adept at turning insights into action by collaborating with cross-functional teams to deliver impactful solutions for diverse business cases.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Chinese

Fluent

Work Experience

Machine Learning Engineer at TikTok

November 1, 2023 - April 1, 2026

Enhance cross-language accessibility by SFT Qwen3-8B and other internal models to reduce external API costs while achieving comparable cross-language translation quality on subtitles and related scenarios. Predict users' next-step actions on short videos from past interactions using user behavior sequence models (DSIN, BST, DIN, DIEN) and LLMs (Qwen-3, GPT-2) to optimize experience while controlling cost, achieving 72.2% accuracy and AUC 0.94 with Qwen-3. Forecast CTR and stay time on live streams' For You Page (FYP) using DeepFM, MLP, and LightGBM to better allocate bandwidth for livestream pre-load. Identify high-purchase audiences from Live Room comments using BERT with 94% accuracy, 95% precision and 93% recall.

Senior Data Scientist at SeaMoney

November 1, 2022 - October 1, 2023

Built a Credit Score Card model by studying offline features (purchasing behavior, payment behavior, device/app information, phone book information) and real-time features (3rd party credit reports) to gauge borrowing willingness and payback ability; leveraged LightGBM and Logistic Regression to balance risk and lending resource utilization.

Data Scientist (Analytics) at Grab

March 1, 2021 - November 1, 2022

Applied propensity score matching to generate pseudo control and treatment groups via KNN to understand AutoInvest impact. Designed A/B tests including rollout plan, experiment variants, and key success metrics; analyzed results to inform product iterations.

Data Scientist at DBS Bank

August 1, 2019 - February 1, 2021

Led junior analysts to architect and deploy a personalized article recommendation system for private banking/treasure customers to promote investments; deployed results to SAS to aid marketing targeting. Collaborated with business teams to build topic classification models for Singaporean and Indonesian customer reviews using LightGBM and BERT, achieving accuracy above 72% and 80% respectively.