Weixin Liu
Senior Data Scientist
Singapore
Summary
👤
Senior🎓
Top SchoolWeixin Liu is a Senior Data Scientist based in Singapore with 8 years of experience building production-grade machine learning and risk systems across fintech and e-commerce. He has led teams at SeaMoney to deliver a knowledge graph platform and realtime fraud/risk models for retail and SME finance across Asia, and previously architected end-to-end ML platforms and transformer-based transaction forecasting at Airwallex. His background spans reinforcement learning for multi-armed bandit A/B optimization, scorecard credit screening, recommender systems, and high-precision anomaly detection that improved defect screening to 99.7%. Comfortable both as a hands-on modeler and a technical lead, he blends physics-trained analytical rigor with practical ML engineering to turn complex data into revenue-protecting systems. Notably, he has repeatedly deployed realtime risk pipelines and knowledge-graph-driven user embeddings to strengthen fraud detection and customer management at scale.
9 years of coding experience
6 years of employment as a software developer
Master's degree, Computer Science, Master's degree, Computer Science at University of Illinois at ChicagoBachelor's degree, Physics, Bachelor's degree, Physics at Shenzhen University
Chinese, English, cantonees
Github Skills (14)
representation-learning7
self-attention5
natural-language-understanding3
roberta3
foundation-models3
bert3
vision-transformer3
arxiv3
language-model3
clip2
scale2
multimodal2
deep-learning2
pytorch2
Programming languages (1)
Github contributions (5)
stevenliu000/time-series-domain-adaptation
Feb 2020 - Aug 2020
Contributions:375 commits, 364 pushes, 2 branches in 6 months
stevenliu000/Y3T2_ECE353
Jan 2018 - Jun 2018
Contributions:55 pushes, 1 branch in 4 months
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