choi se
Senior Site Reliability Engineer at Kakao Corp
South Korea
Summary
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Rockstarchoi se is a Senior Site Reliability Engineer with 13 years building large-scale, real-time data and recommendation systems in South Korea, currently at LINE Plus and with a long tenure at Kakao. He specializes in reliability and distributed stream processing—contributing to high-profile open source projects like Netflix's suro and Apache Heron—where his work fixed critical resource leaks, improved Thrift-based connections, and added health checks and Kafka integration. His background spans realtime recommender systems, container orchestration, and big data ecosystems (Hadoop/Hive), reflecting a blend of backend engineering and DevOps. Known for pragmatic fixes that improve operational stability, he brings deep hands-on experience turning brittle pipelines into resilient production services.
13 years of coding experience
Github Skills (17)
networking10
java10
javas10
heron10
bazel10
thrift10
devops10
streaming10
load-balancing9
resource-management9
kafka9
error-handling9
docker8
python8
dockers8
Programming languages (16)
Github contributions (5)
apache/incubator-heron
Nov 2018 - Dec 2022
Apache Heron (Incubating) is a realtime, distributed, fault-tolerant stream processing engine from Twitter
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:30 reviews, 72 commits, 51 PRs in 4 years 2 months
Contributions summary:Choi primarily focused on fixing build errors and adding support for new features within the Heron stream processing engine. Their work involved modifying Java code for core functionality and integrating Kafka client components. Additionally, the user contributed to the project's infrastructure, adding support for instance health checks and updating build scripts for Bazel, including the use of Java 11, and supporting Rocky 8 for containers. Finally, they worked on UI improvements, particularly adding favicons and addressing typo corrections.
fault-tolerantstream-processingtwitterheronstreaming
Netflix/suro
May 2014 - Jun 2014
Netflix's distributed Data Pipeline
Role in this project:Backend Developer
Backend DeveloperContributions:8 commits, 1 PR in 23 days
Contributions summary:Choi primarily focused on improving the stability and reliability of the `suro-client` library. Their commits addressed critical issues such as resource leaks, null pointer exceptions, and socket management, specifically within the context of connection handling and Thrift-based communication. These changes involved cleaning up resources, adding null checks, and properly closing connections, contributing to a more robust data pipeline. The user also made general improvements related to ping functionality.
data-pipeline
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