Zhenxing Jiang
Technical Director at Reyun
Chaoyang District, Beijing, China
Summary
🤩
Rockstar🎓
Top SchoolZhenxing Jiang is a Technical Director based in Chaoyang District, Beijing with 13 years of experience building scalable systems in the computer networking and data domains. He brings deep hands-on expertise in Hadoop, Hive, Python, Java, and Linux, and has advanced from senior developer to technical lead and now director at Reyun. Beyond leadership, he remains an active backend engineer — contributing to Apache DataFusion by extending its DataFrame.describe capabilities and adding statistical aggregates like stddev and median, reflecting a practical focus on query execution and data analysis. Trained in computer science at Beijing Institute of Technology, he pairs strong academic foundations with long-term industry experience and a knack for turning core data infrastructure needs into production features.
13 years of coding experience
7 years of employment as a software developer
College, Business English, College, Business English at Delter International Business Institute, BeijingBachelor's degree, Computer Science and Technology, Bachelor's degree, Computer Science and Technology at Beijing Institute of Technology University
English, Chinese
Github Skills (13)
dataframes10
query-engine10
rust10
sql10
dataframe10
data-analysis10
arrow-js9
arrow-keys9
arrows9
aggregate-functions9
query-optimization8
data-structures8
data-structure8
Programming languages (7)
Github contributions (5)
apache/datafusion
Nov 2021 - Nov 2021
Apache DataFusion SQL Query Engine
Role in this project:
Back-end Developer
Back-end DeveloperContributions:48 reviews, 1 commit, 39 PRs in 1 day
Contributions summary:Zhenxing primarily contributed to the `datafusion` query engine by implementing new features and extending existing functionalities. They added a `describe` method to the `DataFrame` class, similar to Polars, providing summary statistics for data analysis. Furthermore, the user integrated aggregate functions such as `stddev`, `median`, and other statistical measures to the `describe` method. The user's work involved modifications to core data structures and example code in the codebase, indicating a focus on query execution and data manipulation capabilities of the query engine.
querypythonquery-enginedataframerust
Reyun/reyun-java
Nov 2013 - Aug 2015
Contributions:12 commits, 1 PR, 1 push in 1 year 8 months
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