Armin Jenewein

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.
Lindenbaum GmbH, Karlsruhe 03/2020 - 09/2020
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
DeNIC eG, Frankfurt am Main 07/2016 - 08/2019
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.
Amadeus Germany, Bad Homburg 08/2012 - 08/2015
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.
pawisda systems GmbH 06/2008 - 12/2011
Systems Administrator / Software Developer: automatic installers, firmware images.
Freelance Projects, Duisburg 12/2005 - 01/2007
Linux system administration and web development projects.
Nothelle Call-Center, Duisburg 07/2005 - 11/2007
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)
Helmholtz Zentrum Berlin (HZB), Berlin (Wannsee) 07/2025 - 11/2025
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).
Heinlein Akademie, Berlin 02/2016 - 06/2016
Training Docker/LXC, Linux namespaces (ages 34-52).

Voluntary Work

Evangelical Petrus Congregation Darmstadt 06/2016 - 03/2019
BASH/Python software development for infrastructure.
Acacia Secondary School, Windhoek, Namibia 03/2018 - 05/2019
Voluntary software development for public school.

Professional Education

Aspect Language School, Dublin 04/2003 - 09/2003
Professional certification acquisition.
Professional Retraining, Kreishandwerkerschaft Iserlohn 08/2000 - 10/2002
Mechatronics Engineer retraining.
Professional Training, Thyssen/Krupp Stahl AG 09/1996 - 07/1999
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

Personal Information

Born in Bremen, Free Hanseatic City of Bremen, March 15th, 1980

Languages: German (mother's tongue, excellent), English (excellent)