Byungwoo Yoo is a seasoned technology leader and CTO with 13 years of experience building high-performance backend systems and AI-driven products from Seoul. He was a core developer on LINE Messenger during its rapid growth to hundreds of millions of users and later co-founded Slidejoy before scaling its product into Buzzvil’s global lockscreen ad platform. At Mathpresso he led AI and search efforts that turned the company into the largest auxiliary provider for digital math textbooks while cutting infrastructure costs by half. Known for pragmatic architecture—introducing DDD, clean architecture, Go, and Netty micro editions—he blends hands-on engineering with strategic leadership across startups and scale-ups. An electrical engineering graduate from Seoul National University with a business minor, he pairs technical depth with product and operational fluency.
12 years of coding experience
16 years of employment as a software developer
Bachelor of Science (B.S.) Electrical and Electronics Engineering (minor. Business school), Bachelor of Science (B.S.) Electrical and Electronics Engineering (minor. Business school) at Seoul National University
Contributions:24 commits, 2 pushes, 1 comment in 1 year 3 months
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Byungwoo Yoo - Chief Technology Officer at Datarize