Gyeol Yu is an experienced engineering leader with a focus on data engineering, currently serving as the Engineering Director at Viva Republica (Toss) since June 2018. Yu has architected and developed the Toss Data Infrastructure, significantly expanding it from 8 nodes to approximately 600 nodes, managing around 30 PB of data. Key contributions include the establishment of a robust Hadoop ecosystem, development of data ingestion and processing pipelines, real-time data analytics tools, and various data management systems. Prior experience includes roles at SK planet, where Gyeol operated a large-scale Hadoop ecosystem, and at NCSOFT, Samsung Electronics, and Kwangwoon University. Gyeol Yu holds a Bachelor of Science in Computer Engineering from Kwangwoon University.
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