Oleh Vasylenko
Executive Director at 15x4
Kyiv, Ukraine
Summary
🤩
Rockstar🎓
Top SchoolOleh Vasylenko is an Executive Director and seasoned software architect with 14 years of experience specializing in information security and blockchain, currently leading operational security at the Ethereum Foundation and heading volunteer defense and tech initiatives at Future Sich. He combines deep hands-on backend and frontend development with product leadership, having built wallets, exchanges, and crypto infrastructure at companies like Tether and Ambisafe. Known for critical thinking, healthy judgment, and tolerance, he leverages those traits to excel in planning, consulting, research, and crisis-ready security operations. His background spans full development lifecycle, from prototyping and UX to operations and incident response, and includes long-term community tech stewardship for science outreach. Based in Kyiv and rooted in applied mathematics and computer science, he brings a rare mix of technical rigor, security-first mindset, and civic-focused engineering. An operator who moves fluidly between low-level engineering and strategic coordination, he often contributes to resilient, mission-critical projects beyond typical product scope.
14 years of coding experience
10 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at V. N. Karazin Kharkiv National University
English, Russian, Ukrainian
Stackoverflow
3,576reputation
1.1mreached
38answers
3questions
php
top-5%
ethereum
top-5%
csv
top-1%
Github Skills (200)
chat10
webrtc10
geth10
eip10
smart-contracts10
collaboration10
csv10
verification10
slack10
remix10
javascript10
chakra-ui10
vyper10
solc10
ide10
Programming languages (16)
Github contributions (5)
WebLogicNow/tether-api-docs
Feb 2015 - Oct 2015
Beautiful static documentation for your API
Contributions:11 commits, 10 pushes in 7 months
apiapi-documentationopenapimarkdown
norom/Yandex-Photo-Gallery
Mar 2012 - Jul 2012
Contributions:31 commits in 3 months
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