Kai Jiang
Staff Software Engineer at Alibaba Cloud
Chaoyang District, Beijing, China
Summary
🤩
Rockstar🎓
Top SchoolKai Jiang is a Staff Software Engineer with 7+ years building high-performance networking and security systems at Alibaba Cloud, backed by a Master's in Computer Science from Harbin Institute of Technology. He combines deep protocol and Unix expertise with hands-on experience in network engineering, fast packet forwarding, and cloud security (Aliyun Shield). An active Apache Doris committer, he contributes to real-time analytics, indexing and hybrid search—implementing inverted index writers and resolving core memory and performance issues in a widely used analytics database. Kai’s background spans carrier-grade networking at Juniper and NSFOCUS to large-scale Hadoop DevOps and security engineering at Alibaba, giving him a rare blend of low-level systems optimization and cloud-scale product delivery. Colleagues rely on him for pragmatic solutions that tighten performance and reliability across both networking stacks and analytics back ends.
7 years of coding experience
7 years of employment as a software developer
Master's degree, Computer Science, Master's degree, Computer Science at Harbin Institute of Technology
English
Github Skills (14)
algorithm10
inverted-index10
data-structures10
algorithms10
databases10
datastructures-algorithms10
c-language10
cprogramming-language10
back-end-development10
relational-databases10
data-structure10
sql-database10
database10
performance-optimization9
Programming languages (3)
Github contributions (5)
apache/doris
Mar 2022 - Jan 2023
Apache Doris is an easy-to-use, high performance and unified analytics database.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:833 reviews, 11 commits, 801 PRs in 9 months
Contributions summary:Kai primarily contributed to the back-end functionality of the Apache Doris database, focusing on performance and optimization. Their work included fixing coredump issues in aggregate functions, adding an inverted index writer API for the back-end, and implementing an inverted index writer for numeric types using a BKD index. Furthermore, the user integrated clucene for inverted index support and resolved memory leak issues related to it. The contributions indicate involvement in core data processing and indexing capabilities.
dbmsapache-dorisdbtreal-timehudi
airborne12/doris-thirdparty
Jan 2023 - Apr 2025
Self-managed thirdparty dependencies for Apache Doris
Contributions:1 release, 2 PRs, 118 pushes in 2 years 3 months
dependenciesdorisapache-dorisapacheself-managed
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