Johannes Klein
Senior Security Infrastructure Operating Engineer
Greater Wurzburg Area Germany
Summary
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SeniorJohannes Klein is a Senior Security Infrastructure Operating Engineer with 12 years of experience, currently operating at Deutsche Telekom from the Greater Würzburg area. He holds high-level certifications—including CCIE #24156 (R&S), CCNP Security, and CISSP—demonstrating deep expertise in network and security architecture. Johannes focuses on building and maintaining resilient security infrastructure at scale, blending hands-on operations with rigorous security controls and compliance awareness. His long tenure at a major telecom underscores experience managing complex, high-availability environments and incident response processes. Colleagues describe him as a steady technical operator who pairs protocol-level knowledge with pragmatic solutions for real-world constraints. Beyond certifications, his profile suggests a strong commitment to continuous professional development in core networking and security domains.
12 years of coding experience
Github Skills (200)
react-native-bridge10
command-line-tool10
continuous-testing10
pdf-viewer10
oauth2-client10
changelog10
nodejs10
package-manager10
viewer10
workspaces10
php10
administration10
password-manager10
expressjs10
ruby10
Programming languages (20)
Github contributions (5)
joh-klein/homebrew-cask
Aug 2017 - Nov 2020
A CLI workflow for the administration of Mac applications distributed as binaries
Contributions:33 pushes, 14 branches in 3 years 3 months
cliworkflowdistributed-applicationsadministrationbinaries
joh-klein/homebrew-core
Feb 2022 - Apr 2024
🍻 Default formulae for the missing package manager for macOS
Contributions:8 pushes, 53 branches in 2 years 2 months
formulaepackage-managermissingdarwinmacos
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