Zhennan Z
Data Development Engineer
Shanghai, Shanghai, China
Summary
👤
Senior🎓
Top SchoolZhennan Z is a data development engineer with eight years of experience and over five years focused on data engineering, specializing in SQL, Python, ETL and cloud data warehouses. He has led large-scale ETL initiatives — including migrating 20TB from Hadoop to Snowflake and building pipelines that process 50M+ daily records — and improved SQL Server performance by 40% through index and stored-procedure redesign. His background spans financial domains (securities retail, fixed income, asset securitization) where he built production reporting, automated data-quality toolchains, and ensured core metric accuracy to 99.9%. Comfortable in English work environments and cross-department coordination, he also drove data SLA adoption and operationalized BAU monitoring. Notable for combining deep procedural SQL expertise with Python automation, he balances hands-on optimization and system-level design to support trading, risk, and quantitative teams.
8 years of coding experience
2 years of employment as a software developer
Bachelor's degree, Computer Science and Communication Engineering, Bachelor's degree, Computer Science and Communication Engineering at Jiangsu University of Science and Technology
Github Skills (22)
langchain9
bgi9
security9
database9
gpt9
llm8
mongodb7
nodejs6
vue5
typescript5
nuxt4
vue-typescript4
penguin3
refactoring2
tricks2
Programming languages (4)
Github contributions (5)
LiuyueOvO/xindong
Dec 2019 - Dec 2019
Contributions:34 commits in 2 days
Lyall-X/IndieCamp
Oct 2019 - Jun 2020
Contributions:37 commits, 11 pushes in 7 months
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