Kuan-po Tseng
Apache Kafka Contributor at The Apache Software Foundation
Taichung, Taiwan
Summary
🤩
Rockstar🎓
Top SchoolKuan-po Tseng is a seasoned backend engineer with 12 years of experience specializing in distributed systems, big data, and cloud-native services, and holds both BS and MS degrees in Computer Science from National Cheng Kung University. He is an active Apache contributor and committer—working on Kafka, HBase and YuniKorn—where his attention to test quality, API consistency, and immutability has improved reliability in widely used open-source projects. At Canner he built a Trino-based enterprise query engine and an open-source metric layer (wren-engine), while also engineering cost-saving CI solutions that cut runner costs by 90%. Now at SUSE’s Harvester team, he applies deep systems and performance expertise gained from roles optimizing Spark SQL and building production dashboards for semiconductor fabs. Colleagues know him as "Cooper" on GitHub, a pragmatic refactorer who prefers clean, maintainable code that scales in production.
11 years of coding experience
7 years of employment as a software developer
Master's degree, Computer Science, Master's degree, Computer Science at National Cheng Kung University
English, Chinese
Stackoverflow
195reputation
17kreached
0answers
4questions
Github Skills (25)
hbase10
admin10
testing10
databases10
kafka10
database-administration10
java10
javas10
junit10
sql10
query-engine10
database10
test-automation10
distributed-systems9
big-data9
Programming languages (14)
Github contributions (5)
apache/kafka
Feb 2024 - Mar 2025
Mirror of Apache Kafka
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:202 reviews, 95 PRs, 260 comments in 1 year 1 month
Contributions summary:Kuan-po primarily focused on improving the test suite and related codebase for the Apache Kafka project. They refactored existing tests using `assertInstanceOf` for type checks, added new tests to cover specific scenarios, and fixed issues related to thread leaks and incorrect logging. The user also contributed to documentation enhancements for key configurations, such as retention policies, improving the overall quality of the test infrastructure.
apache-kafkakafka-consumerapachescalakafka
trinodb/trino
Dec 2022 - Dec 2022
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
Role in this project:Back-end Developer
Back-end DeveloperContributions:56 reviews, 2 commits, 42 PRs in 1 day
Contributions summary:Kuan-po primarily focused on code refactoring and bug fixes within the Trino query engine. Their contributions involved removing unused variables and addressing issues in various modules, including presto-hive and presto-main. They also made minor adjustments to test files, particularly concerning JSON extraction and windowing operations. These changes indicate a focus on code quality and optimization within the codebase.
prestodbdbmsindexingjdbcbigdata
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