Jaeho Yoo
Data Engineer
Seoul Incheon Metropolitan Area South Korea
Summary
👤
Senior🎓
Top SchoolJaeho Yoo is a Data Engineer at NAVER with nine years of experience building AI and data platform infrastructure, specializing in big data technologies like Hadoop, Hive/Trino, and Airflow alongside Kubernetes for production orchestration. He contributes to Trino development—maintaining the Trino Gateway and improving core engine stability and type handling—which reflects hands-on expertise with distributed SQL query engines used at scale. Prior roles span software engineering and data analysis with experience in Kubernetes, Redis, Google BigQuery, and PostgreSQL, and he helped drive award-winning projects in multiple hackathons early in his career. Based in the Seoul–Incheon area, he blends platform engineering with pragmatic backend improvements (e.g., ORC writer and resource-group tweaks) that boost performance and reliability. Collected academic training from 고려대학교 underpins a practical approach to solving complex data problems. Colleagues know him for shipping durable, production-ready data services while staying active in open-source ecosystems.
9 years of coding experience
Bachelor of Engineering - BE, Bachelor of Engineering - BE at 고려대학교
Github Skills (13)
javas10
query-engine10
sql10
mysql10
java10
database9
distributed-database9
databases9
big-data8
analytics8
data-structures6
data-structure6
data-science5
Programming languages (11)
Github contributions (5)
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:13 reviews, 2 commits, 13 PRs in 1 day
Contributions summary:Jaeho primarily focused on enhancing the Trino query engine's capabilities and stability. They made changes to support MySQL enum types by mapping them to Trino varchar types, improving data type handling. They also implemented a refresh interval for the database resource group manager and disabled preventive GC for performance improvements. Additionally, the user made changes to the ORC writer to use default bloom filter parameters when not provided.
big-datasql-querytrinojavapresto
Chaho12/trino
Jan 2022 - Jul 2026
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
Contributions:70 pushes, 26 branches, 4 tags in 4 years 6 months
bigdatabig-datatrinodatabasehadoop
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