Chen Wei
UnavailableMachine Learning Engineer — NLP & Computer Vision
About
ML engineer with 6 years of experience building production machine learning systems — from data collection and model training through to deployment and monitoring. I care about models that work in the real world, not just on benchmarks. Currently at capacity but open to new projects starting April 2026.
Skills & Expertise
Work History
Legal Tech RAG System
February 2026Production RAG to extract structured data from contracts. LLaMA 2 fine-tuned on legal text. 94.2% accuracy. Replaced 2 FTEs of manual work.
Retail Computer Vision Deployment
December 2025Real-time object detection on in-store cameras for out-of-stock + pricing errors. 42% incident reduction, 97% pricing accuracy.
Shopify Recommendation Engine
October 2025Hybrid collaborative + content-based recommender via custom API. AOV up 23%, recommendation CTR 12.4%.
Reviews (27)
Amy L. · LaunchFast Pte.
February 2026
“Chen built an ML system that replaced a manual process costing us $18k/month. He was methodical, transparent about model limitations, and built in monitoring that caught a data drift issue before it affected production.”
Oliver N. · DataRoute BV
December 2025
“Hired Chen for a computer vision project. He was honest from the start about what was achievable and what wasn't — which is refreshing in ML consulting. Delivered exactly what was promised.”
Petra H. · ChainVault GmbH
October 2025
“Strong technical skills and good communication. Chen ran into some issues with our data quality mid-project, handled it professionally, and adjusted the timeline appropriately.”
Track record
Member since November 2022