Over 8 years of experience, specializing in big data analysis, extracting valuable insights, and developing end-to-end machine learning solutions to address diverse business challenges. A proven track record of successfully delivering data science projects and driving substantial business impact.
Hi, I’m
Biwei Jiang
San Jose,United States
Summary
Overview
8
years of professional experience
Work History
eBaySan Jose + Shanghai
Data Scientist 2
02.2022 - Current
Job overview
- End-to-end built a user relevance module in eBay Unified Experience Platform, to rank messages from diverse sources within eBay based on user relevance, resulting in substantial success in production. Achieved: 1. $10 million increase in gross revenue, boost of 420K visits in the United States. 2. $5 million annual growth in gross revenue, 6% increase in click-through rate and 18% reduction in opt-out rate in German market.
- End-to-end developed a recommendation model to address cold-start challenges on user-category level. Demonstrated a 50% improvement in precision metric compared to the current production system. Significantly enhancing personalized recommendations by targeting user potential activities including view+search+purchase+bbowac.
- Mentored new team members and interns, enabling them to independently complete large-scale projects for production.
eBayShanghai
Data Scientist 1
03.2018 - 08.2022
Job overview
- Led a team in constructing an AI-Powered User-Centric Review System designed to extract crucial factors influencing buyers' product judgments. This initiative aimed to enhance the overall buyer experience and convenience when providing reviews, ultimately facilitating the creation of high-quality feedback from buyers. As a result, an eBay patent application was filed and is currently under examination.
- Developed a stratified model to predict user interests in eBay Topics, incorporating insights from user-interacted Topics, similar Topics, and non-linearly connected Topics. This model demonstrated notable success in production, resulting in a 30% increase in Click-Through Rate and a 40% boost in Purchase Intent.
- Conducted big data analysis and data mining to understand customer behaviors, extracting information for making or adjusting business strategies.
- Developed and maintained automated end-to-end pipelines for big data, encompassing source data ingestion, data cleaning, feature engineering, data preprocessing, model training/tuning, inference with pretrained models, production deployment, and performance monitoring.
Dingcheng Financial Information Service Co.,Ltd.Shanghai
Data Analyst
06.2016 - 02.2018
Job overview
- Conducted 360-degree data analysis and asset stratification for supply chain finance projects.
- Led the development of a trade-behavior-based scorecard model focused on risk assessment and control, enhancing decision-making processes.
Education
City University of Hong KongHongkong
Master of Science from Quantitative Analysis For Business
07.2016
University Overview
Henan University of Economics And LawZhengzhou
Bachelor of Science from Finance
06.2015
University Overview
Skills
- SQL
- Big Data Analysis
- Apache Spark
- Hadoop
- Statistics
- Data Mining
- Machine learning
- Python
- Tableau
- Scala
Timeline
Data Scientist 2
eBay
02.2022 - Current
Data Scientist 1
eBay
03.2018 - 08.2022
Data Analyst
Dingcheng Financial Information Service Co.,Ltd.
06.2016 - 02.2018
City University of Hong Kong
Master of Science from Quantitative Analysis For Business
Henan University of Economics And Law
Bachelor of Science from Finance