Chul-woong Yang
VP Head Of Cybersecurity DXT Lab at NHN Cloud
Seongnam-si, South Korea
Summary
👤
Senior🎓
Top SchoolChul-woong Yang is a veteran technology leader and entrepreneur with over 16 years of experience building high-performance Internet and security systems, currently serving as VP and Head of Cybersecurity DXT Lab at NHN Cloud. He co-founded ARA Networks in 1999 and led development of industry-grade web caching and SSL-visibility products that achieved top-tier performance and broad global adoption across telcos and CDNs. As CTO and product owner at SOOSAN INT he drove the ePrismX cybersecurity platform and eWalker WAF to market-leading share in Korea, unifying disparate security functions into a containerized CNF platform. Technically hands-on, he has deep expertise in asynchronous I/O, lock-free concurrency, Intel QAT acceleration, and contributed backend fixes to the widely used H2O HTTP server. He blends PhD-level research from KAIST with pragmatic product discovery and roadmap leadership, and is now focusing on applying ML and big-data frameworks to Internet services and cloud-native security.
16 years of coding experience
7 years of employment as a software developer
Master of Science (M.Sc.), Computer Science, Master of Science (M.Sc.), Computer Science at 한국과학기술원 / KAISTDoctor of Philosophy (Ph.D.), Computer Science, Doctor of Philosophy (Ph.D.), Computer Science at 한국과학기술원(KAIST)
English, Japanese, Korean
Stackoverflow
1,233reputation
46kreached
35answers
21questions
Github Skills (20)
multithreading10
http10
c1110
c1710
httpd-server10
http-server10
concurrency10
ssl9
tls129
tls139
logging9
reverse-proxy8
lisp6
haskell6
gcc6
Programming languages (3)
Github contributions (5)
h2o/h2o
Dec 2015 - Mar 2022
H2O - the optimized HTTP/1, HTTP/2, HTTP/3 server
Role in this project:
Backend Developer
Backend DeveloperContributions:6 commits, 9 PRs, 24 comments in 6 years 3 months
Contributions summary:Chul-woong primarily contributed to the backend of the H2O server, focusing on bug fixes and enhancements to core functionalities. They implemented mutex synchronization in the multithread queue for improved thread safety and addressed a potential error in the SSL input decoding process. Moreover, the user added features related to access logs, including proxy-related SSL information such as protocol version, cipher, and cipher bits, for enhanced reverse proxy logging. The user also moved the doc update srcdoc and typecasting uint16_t.
h2ohttp-clientfiddlerhttp2optimized
cwyang/stuffs
Aug 2015 - Jul 2021
Contributions:21 pushes in 5 years 11 months
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