Wei-Hsuan Tsui
Verified Expert in Engineering
Data Engineer and Developer
Dallas, TX, United States
Toptal member since April 15, 2026
Wei-Hsuan is a certified data engineer with 6+ years of experience developing and maintaining robust data pipelines and analytics solutions. He has proven expertise in leveraging a diverse tech stack—including SQL, Python, Tableau, and Power BI—to drive data-driven solutions and resolve production issues to protect critical business SLAs. Wei-Hsuan built an automated data collection and anomaly detection tool designed to streamline data integrity for a utility company.
Portfolio
Experience
- Python 3 - 6 years
- SQL - 6 years
- Data Analytics - 6 years
- Data Engineering - 6 years
- Tableau - 6 years
- Microsoft Power BI - 6 years
- Snowflake - 5 years
- Windsurf - 1 year
Work Experience
Data Engineer
Capital One Financial
- Engineered a custom data lineage tool to identify upstream and downstream table dependencies during production issues, significantly reducing resolution time and saving critical SLAs.
- Designed and implemented interactive Tableau dashboards to track agent performance metrics and monitor call flow adherence.
- Implemented and managed CI/CD processes for data pipeline deployment, ensuring code quality and reliable automated testing.
- Leveraged generative AI tools, including Copilot, to accelerate the production of complex SQL scripts and data pipelines.
- Develop and maintain robust data pipelines to support auto loan call center operations using SQL and Snowflake.
Senior Data Analyst
Oncor Electric Delivery
- Automated web browser actions using Selenium, significantly reducing manual intervention and improving operational efficiency. Developed an internal data management system for operational use with MySQL and Python.
- Built and deployed a highly accurate predictive model using random forest and self-organizing map algorithms, achieving over 99% prediction rate for automating service order work group assignments.
- Translated complex business requirements into intuitive data visualizations and reports using Power BI and Python for the AMS operation team.
Project History
Stock investment Advisor Tool
https://github.com/tsuiwei1212/Stock-Investment-Advisor-Tool-Education
Master's Degree in Data Science
University of North Texas - Dallas, TX, USA
Bachelor's Degree in Kinesiology and Exercise Science
University of North Texas - Denton, TX, USA
Certifications
AWS Certified Solutions Architect
Amazon Web Services (AWS)
Skills
Tools
Slack, Tableau, Windsurf, Claude, Microsoft Power BI
Languages
SQL, Python 3, Snowflake
Platforms
MacOS, Jupyter Notebook, Databricks
Storage
Amazon S3 (AWS S3), MySQL
Other
Data Analytics, Machine Learning, Data Engineering, Sports, Biology, Statistics
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