Jack Tsai
Senior Software Engineer at Zilliz
Shanghai, Shanghai, China
Summary
🤩
Rockstar🎓
Top SchoolJack Tsai is a Senior Software Engineer with nine years of experience building high-performance distributed systems and developer tooling, currently working at Zilliz after a stint at Alibaba Cloud. He is an active Apache committer and maintainer in IoTDB and RocketMQ, contributing both back-end optimizations (time-series encoding, rebalancing algorithms) and front-end improvements to widely used projects. Jack combines pragmatic systems engineering—improving compression, batched ingestion and rebalancing reliability—with developer-facing work like Javadoc/XDoc enhancements and site UX fixes. His background includes production-grade extensions for Azure tooling and hospital informatics prototypes, showing a talent for shipping practical, cross-domain solutions. Based in Shanghai, he blends deep Java and distributed-systems expertise with a taste for open source community leadership and measurable performance wins.
9 years of coding experience
1 year of employment as a software developer
Bachelor of Science - BSc, Computer Science with Software Development, Bachelor of Science - BSc, Computer Science with Software Development at University of LiverpoolUniversity College London
English, Chinese
Stackoverflow
26reputation
56reached
4answers
0questions
Github Skills (29)
algorithm10
timeseries-database10
javascript10
static-analysis10
javadoc10
compress10
encoder10
software-quality10
java10
javas10
tsd10
apache-iotdb10
encoding10
compression10
encode10
Programming languages (8)
Github contributions (5)
apache/rocketmq-site
Aug 2020 - Jan 2023
Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:140 reviews, 20 commits, 52 PRs in 2 years 5 months
Contributions summary:Jack primarily contributed to the front-end aspects of the Apache RocketMQ site. Their work focused on updating and modifying the home page content, including the modification of core features and ecosystem sections. They also made updates to the logo carousel component, adding and updating logos. The user also corrected redirect links to improve user navigation and site maintainability.
eventingstreamingapachenative-messagingevent-driven
apache/iotdb
Jun 2019 - May 2022
Apache IoTDB
Role in this project:Back-end Developer
Back-end DeveloperContributions:18 reviews, 26 commits, 20 PRs in 2 years 11 months
Contributions summary:Jack primarily focused on enhancing the `RegularDataEncoder` in the `iotdb` repository. They implemented new encoding methods for regular timestamp columns, contributing to improved data compression techniques. Additionally, the user made multiple code reformatting changes and addressed bug fixes related to batch ingestion and row batch operations. Their work involved modifications across several Java files, including `ChunkWriterImpl.java` and `RegularDataEncoder.java`.
tdenginenosqlapachebig-datadatabase
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