Roman Mueller
Senior Penetration Tester
Munich, Bavaria, Germany
Summary
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SeniorRoman Mueller is a Senior Penetration Tester based in Munich with 12 years of hands-on experience across offensive security, DevOps and systems engineering. He specializes in web application and API pentesting, OSINT and hardware security, applying a sysadmin’s eye from a long career automating and hardening large-scale Linux infrastructures. Roman has driven security programs at enterprises and in automotive contexts, built vulnerability scanning and bot-detection capabilities, and still contributes to well-known open-source ops tooling (notably enhancements to the puppetlabs-apache module). Comfortable working under NDAs, he combines practical exploit skills with deep operational knowledge—able to reproduce, scale and remediate issues across complex production environments. He’s notable for bridging decades of platform automation work with modern adversary-focused testing, making findings both actionable and infrastructure-aware.
11 years of coding experience
3 years of employment as a software developer
English, German
Stackoverflow
213reputation
66kreached
1answer
1question
Github Skills (11)
puppeteer10
apache10
puppet10
ssl9
centos9
infrastructure-as-code9
su7
python-modules7
sup7
python6
mysql6
Programming languages (12)
Github contributions (5)
puppetlabs/puppetlabs-apache
Jan 2015 - Mar 2015
Puppet module for the Apache httpd server, maintained by Puppet, Inc.
Role in this project:
DevOps Engineer
DevOps EngineerContributions:7 commits, 5 PRs, 8 comments in 2 months
Contributions summary:Roman's primary focus was on improving the Apache module. They added features for allowing and denying directives, which involved modifications to the code to support multiple directives in the vhost configuration. They also added support for the `mod_ldap` package on CentOS 7 and incorporated the `mod_geoip` module. Furthermore, they updated the `ssl.conf` file and corresponding settings.
puppetpuppet-modulesupportedapachehttpd-server
roman-mueller/dotfiles
May 2015 - Apr 2025
Contributions:46 pushes, 1 branch in 10 years
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