Jan Marek
Prague, Prague, Czechia
Summary
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SeniorJan Marek is a pragmatic offensive security leader and co-founder of Cyber Rangers with nine years of focused experience in red teaming, penetration testing, and Windows/Active Directory attack research. As Red Team Lead he combines deep Windows internals, EDR/AV evasion, and exploit development with hands-on digital forensics and custom tooling to simulate realistic adversaries for enterprise clients. He also trains and advises teams on Microsoft security stacks (Sentinel, MDE/MDI, Azure) and organizes community knowledge-sharing through talks, a podcast, and training roles at CQURE Academy and Gopas. Jan’s background as an architect and ATOM service builder gives him a rare blend of offensive insight and platform-level defensive design experience. He pursues continuous learning (MBA in AI, modern evasion courses) and is known for turning advanced research into practical playbooks and tooling that defenders can adopt.
9 years of coding experience
Github Skills (11)
windows10
cybersecurity10
powershell10
hci10
windows-server10
azurestack10
security9
azure9
consumption8
cloud-native8
code-documentation6
Programming languages (2)
Github contributions (5)
cyber-rangers/CYB3RTools
May 2019 - Nov 2019
Contributions:11 commits, 9 pushes, 1 branch in 6 months
mcpjanmarek/WSLab-Additions
Mar 2019 - May 2019
Contributions:31 pushes, 1 branch in 1 month
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