Jian Zhang
Software Engineer
Beijing, United States
Summary
🤩
Rockstar🎓
Top SchoolJian Zhang is a seasoned software engineer and engineering manager with 11 years of experience building and evolving distributed databases and SQL engines. He has led TiDB and TiKV teams at PingCAP, driving SQL-layer improvements, session/privilege management, DDL, charset/collation, and distributed execution while growing product and community. Hands-on in backend and database engineering, Jian has contributed to the widely used TiDB project—rewriting string functions to handle Unicode code points, improving time zone handling, and adding robust tests—and continues to work on LeanStore in his spare time. Earlier work at Alibaba Cloud focused on MaxCompute runtime optimization, LLVM-based codegen and SIMD vectorized execution, reflecting deep systems and query execution expertise. Based in Beijing, he blends technical depth with people leadership and a sustained commitment to open-source database engineering.
11 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Electrical, Electronics and Communications Engineering, Bachelor's degree, Electrical, Electronics and Communications Engineering at University of Electronic Science and Technology
Github Skills (10)
text-manipulation10
databases10
go10
strings10
sql10
relational-databases10
mysql10
sql-database10
database10
testing9
Programming languages (14)
Github contributions (5)
pingcap/tidb
Jun 2017 - Mar 2021
TiDB - the open-source, cloud-native, distributed SQL database designed for modern applications.
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:4 releases, 569 reviews, 429 commits in 3 years 8 months
Contributions summary:Jian primarily focused on enhancing the database's capabilities by implementing features and addressing related issues. They modified code to improve the return types used by scalar functions. They rewrote built-in string functions (REPEAT, FROM_BASE64, BIN, CHAR, SUBSTR, LEFT, RIGHT, INSTR, REVERSE) to manipulate code points, and also incorporated the concept of handling time zones and preventing errors when inserting data. The user also added tests to verify the functionality of new code.
ai-poweredtidbserverlesshtapreal-time
pingcap/tidb-bench
Mar 2018 - Apr 2020
A Simple Benchmark For TiDB
Contributions:27 commits, 15 PRs, 24 pushes in 2 years 1 month
benchmarktidb
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