Armin Jenewein
Senior Linux/UNIX Systems Engineer, Freelance open source professional
Email: mail@jenewein.it
Expertise
Systems Automation, Scripting, Systems Administration, Systems Engineering, 30 years of Linux/BSD experience
Work Experience
Silpion IT-Solutions GmbH, Hamburg 03/2021 - 04/2024
IT systems engineer providing consultancy, deployments, automation, scripting. Linux/UNIX systems administration with BASH, Python, Ansible, Docker. Agile DevOps teams.
IT systems engineer providing consultancy, deployments, automation, scripting. Linux/UNIX systems administration with BASH, Python, Ansible, Docker. Agile DevOps teams.
Lindenbaum GmbH, Karlsruhe 03/2020 - 09/2020
Senior Linux/UNIX Systems Engineer. Automation and testing for virtual conferencing/VoIP. Ansible, Perl, BASH, Python.
Senior Linux/UNIX Systems Engineer. Automation and testing for virtual conferencing/VoIP. Ansible, Perl, BASH, Python.
COCUS AG, Eschborn 09/2019 - 02/2020
Systems Engineering, Automation and Testing. Agile team, continuous delivery platforms (CentOS). Configuration management with Ansible
Systems Engineering, Automation and Testing. Agile team, continuous delivery platforms (CentOS). Configuration management with Ansible
DeNIC eG, Frankfurt am Main 07/2016 - 08/2019
Senior Linux/UNIX Systems Engineer (DevOps). CentOS deployments, administration, Ansible, SaltStack.
Senior Linux/UNIX Systems Engineer (DevOps). CentOS deployments, administration, Ansible, SaltStack.
Uniberg GmbH, Eschborn 08/2015 - 01/2016
Deployment, administration, virtualized infrastructure. Consulting for ISPs and telecoms. Large-scale network optimization.
Deployment, administration, virtualized infrastructure. Consulting for ISPs and telecoms. Large-scale network optimization.
Amadeus Germany, Bad Homburg 08/2012 - 08/2015
Continuous integration environments on cloud VMs: Debian, Jenkins, Git, SSH, Docker, PHP, Neos/Flow.
Continuous integration environments on cloud VMs: Debian, Jenkins, Git, SSH, Docker, PHP, Neos/Flow.
ADACOR Hosting GmbH, Offenbach 01/2012 - 08/2012
Systems Administrator Linux/VMware, CentOS, RHEL, Debian, monitoring/firewall solutions.
Systems Administrator Linux/VMware, CentOS, RHEL, Debian, monitoring/firewall solutions.
pawisda systems GmbH 06/2008 - 12/2011
Systems Administrator / Software Developer: automatic installers, firmware images.
Systems Administrator / Software Developer: automatic installers, firmware images.
Freelance Projects, Duisburg 12/2005 - 01/2007
Linux system administration and web development projects.
Linux system administration and web development projects.
Nothelle Call-Center, Duisburg 07/2005 - 11/2007
1st/2nd level technical support for telecommunication providers.
1st/2nd level technical support for telecommunication providers.
Short Term Projects
ABIS GmbH, Frankfurt am Main 08/2024 - 10/2021
Supporting Linux system administration, deployment automation (Ansible), scripting (BASH)
Supporting Linux system administration, deployment automation (Ansible), scripting (BASH)
Helmholtz Zentrum Berlin (HZB), Berlin (Wannsee) 07/2025 - 11/2025
Linux systems administration (Ubuntu, Debian), deployment automation (Ansible)
Linux systems administration (Ubuntu, Debian), deployment automation (Ansible)
Freelance Activities
Heinlein Akademie, Berlin 10/2020 - 01/2021
Training Linux, shell scripting, automation, Docker/LXC (ages 21-62).
Training Linux, shell scripting, automation, Docker/LXC (ages 21-62).
Heinlein Akademie, Berlin 02/2016 - 06/2016
Training Docker/LXC, Linux namespaces (ages 34-52).
Training Docker/LXC, Linux namespaces (ages 34-52).
Voluntary Work
Evangelical Petrus Congregation Darmstadt 06/2016 - 03/2019
BASH/Python software development for infrastructure.
BASH/Python software development for infrastructure.
Acacia Secondary School, Windhoek, Namibia 03/2018 - 05/2019
Voluntary software development for public school.
Voluntary software development for public school.
Professional Education
Aspect Language School, Dublin 04/2003 - 09/2003
Professional certification acquisition.
Professional certification acquisition.
Professional Retraining, Kreishandwerkerschaft Iserlohn 08/2000 - 10/2002
Mechatronics Engineer retraining.
Mechatronics Engineer retraining.
Professional Training, Thyssen/Krupp Stahl AG 09/1996 - 07/1999
Energy Electronics Technician.
Energy Electronics Technician.
Technical Skills
Languages: BASH (excellent), POSIX sh/ksh (good), Python (good), Ruby/Perl/JS/Tcl-TK (medium), C/C++ (basic)
Technologies: Docker, BSD Jails, OpenBSD pf, Git, SVN, OOP, YAML, JSON, Markdown, HTML, XML
Operating Systems: Linux (Debian, Ubuntu, Arch, CentOS, Alma, Rocky, Fedora), FreeBSD, OpenBSD, macOS, Windows
Technologies: Docker, BSD Jails, OpenBSD pf, Git, SVN, OOP, YAML, JSON, Markdown, HTML, XML
Operating Systems: Linux (Debian, Ubuntu, Arch, CentOS, Alma, Rocky, Fedora), FreeBSD, OpenBSD, macOS, Windows
Personal Information
Born in Bremen, Free Hanseatic City of Bremen, March 15th, 1980
Languages: German (mother's tongue, excellent), English (excellent)