Stanislav Zakratskiy
Offensive Security Expert at Freelance
Amsterdam, North Holland, Netherlands
Summary
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Senior🎓
Top SchoolStanislav Zakratskiy is an offensive security expert and former software engineer with 11 years of experience building and securing high-load payment and enterprise systems. Based in Amsterdam, he transitioned from backend and architecture roles (Java, C++, Erlang, PHP) and CTO responsibilities into penetration testing and red teaming, now working at Adyen after leading pentest teams and embedding application security across SDLCs at Backbase. He combines hands-on exploit development and CTF-caliber offensive skills with pragmatic architectural insight from large fintech and banking projects, enabling him to both find vulnerabilities and design resilient remediation. Stanislav also runs phishing and social-engineering engagements, writes actionable audit reports, and has a track record of replacing costly external services with internal programs. His background in systems architecture and cloud migrations gives him an uncommon ability to assess security risks in complex distributed environments.
11 years of coding experience
12 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at Gubkin Russian State University of Oil and Gas (National Research University)
Russian, English
Github Skills (14)
phishing10
security9
gophish9
golang8
tunneling5
pentesting4
offensive-security4
emulation3
smtp3
erlang2
postman1
tun1
driver1
postgresql1
Programming languages (5)
Github contributions (5)
maximumtest/php-git-hooks
Feb 2018 - Feb 2018
Contributions:3 releases, 6 PRs, 5 pushes in 14 days
phphooksgit-hooks
MooGeek/codewars
Sep 2016 - Sep 2016
Contributions:19 pushes, 1 branch in 1 day
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