Juraj Kosik
Senior Manager - Security Engineering at Undisclosed
Slovakia
Summary
👤
Senior🎓
Top SchoolJuraj Kosik is a senior security engineering leader with 11 years of hands-on experience building cloud-native security infrastructure, DevSecOps practices, and automated CI/CD threat detection across enterprise and telco environments. He has led regional DevSecOps and infrastructure security teams at organizations like Thermo Fisher Scientific and Deutsche Telekom, and currently architects AI-powered defenses and secure-by-design SDLCs. Comfortable across public clouds, bare-metal and air-gapped systems, he combines practical penetration-testing roots with large-scale automation—summed up by his motto: "If it’s not automated, it’s tech debt in disguise." A contributor and blogger on security and automation, he also brings uncommon domain breadth from DNS/DDoS mitigation to blockchain and AI security.
11 years of coding experience
4 years of employment as a software developer
CCNA (Cisco Certified Network Associate), CCNA (Cisco Certified Network Associate) at Cisco Networking AcademyCyberSecurity Specialization, CyberSecurity Specialization at University of MarylandMaster's degree Banking Finance Investment, Master's degree Banking Finance Investment at University of Economics in Bratislava
English, German, Slovak, Czech
Github Skills (18)
microk8s9
gitlab6
splunk6
semgrep5
api4
go4
helm4
vulnerabilities4
security3
kubernetes2
ansible2
powerdns1
terraform1
cicd1
git1
Programming languages (6)
Github contributions (5)
jkosik/pdns-circl
Nov 2018 - May 2022
Contributions:12 commits, 12 pushes in 3 years 6 months
jkosik/app1-code
Aug 2021 - May 2025
Contributions:8 PRs, 37 pushes, 4 branches in 3 years 9 months
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