Armin Jenewein

Senior Linux/UNIX Systems Engineer & Freelance Open Source Professional

About Me

Hi! My name is Armin and I'm a senior Linux/UNIX systems engineer and freelance open source professional (with more than 15 years of professional experience) designing, maintaining, and optimizing reliable infrastructure, writing robust scripts and building efficient automations for *nix systems. I'm extremely passionate about the command line, automation, and the UNIX philosophy. Constant focus on terminal-driven workflows, system performance, and clean, efficient solutions. Also experience across diverse environments, from enterprise systems to modern open source desktop platforms, always driven by stability, simplicity, minimalism, and technical excellence.

🎒 Journey

I'm a passionate musician, DJ and visual computer artist who has worked professionally over 15 years with Linux & BSD. One of my primary goals is crafting beautiful, functional, and secure IT applications and appliances that work reliably and are a joy to use. My expertise spans across infrastructure design, configuration management, scripting, provisioning, and deployment automation. I'm a minimalist at heart who loves to start from scratch and to build solutions from the ground up.

I believe in the power of lightweight software, intuitive design, and seamless user experiences. When I'm not coding, you can find me exploring new operating systems, free software, programming languages, contributing to open-source projects, or making music and visual art.

🎯 Mission

To deliver reliable, efficient, and sustainable Linux/UNIX infrastructure solutions through deep technical expertise, automation, and open source technologies. Focused on building stable systems, streamlining operations, and empowering businesses with secure and scalable systems and toolchains.



💡 Vision

To promote a modern, open, and transparent IT ecosystem where simplicity, automation, and open source principles drive innovation. Dedicated to advancing terminal-centric workflows and resilient infrastructure that enable long-term performance, flexibility, and technological independence.

Code

Mentionable Git repositories. Seeing is believing.

Professional Experience

06/2025 - 11/2025

Linux Systems Administrator

Helmholtz Zentrum Berlin (HZB), Berlin

Linux systems administration using Ubuntu and Debian, including deployment automation with Ansible.

Ubuntu Debian Ansible
Deployment automation
03/2021 - 04/2024

IT Systems Engineer

Silpion IT-Solutions GmbH, Hamburg

Providing consultancy, deployments, automation, scripting. Linux/UNIX systems administration with BASH, Python, Ansible, Docker. Agile DevOps teams.

BASH Python Ansible Docker
Linux/UNIX systems administration
Automation & scripting
Agile DevOps collaboration
03/2020 - 09/2020

Senior Linux/UNIX Systems Engineer

Lindenbaum GmbH, Karlsruhe

Automation and testing for virtual conferencing/VoIP systems. Worked with Ansible, Perl, BASH and Python.

Ansible Perl BASH Python
VoIP automation
System testing
09/2019 - 02/2020

Systems Engineer

COCUS AG, Eschborn

Systems engineering, automation and testing in agile teams. Continuous delivery platforms based on CentOS with automated deployments and configuration management using Ansible.

CentOS Ansible CI/CD Automation
Automated deployments
Configuration management
07/2016 - 08/2019

Senior Linux/UNIX Systems Engineer (DevOps)

DeNIC eG, Frankfurt am Main

CentOS deployments, administration and automation with Ansible and SaltStack.

CentOS Ansible SaltStack DevOps
Infrastructure automation
Large-scale administration
08/2015 - 01/2016

Systems Engineer

Uniberg GmbH, Eschborn

Deployment and administration of virtualized infrastructure. Consulting for ISPs and telecoms with focus on large-scale network optimization.

Virtualization Infrastructure Telecom Networking
ISP consulting
Network optimization
08/2012 - 08/2015

Systems Engineer

Amadeus Germany, Bad Homburg

Continuous integration environments on cloud VMs using Debian, Jenkins, Git, SSH, Docker, PHP and Neos/Flow.

Debian Jenkins Docker Git
Cloud VM infrastructure
CI environments
10/2020 - 01/2021

Linux & Docker Trainer

Heinlein Akademie, Berlin

Training Linux, shell scripting, automation and Docker/LXC for participants aged 21-62.

Linux Shell Scripting Docker LXC
Professional training courses
03/2018 - 05/2019

Voluntary Software Development

Acacia Secondary School, Windhoek, Namibia

Voluntary software development for a public school infrastructure project.

Software Development Python BASH
Educational infrastructure support
08/2000 - 10/2002

Mechatronics Engineer Retraining

Kreishandwerkerschaft Iserlohn

Professional retraining program focused on mechatronics engineering.

Mechatronics Engineering
Professional certification acquisition
Technical Skills

Core Technologies & Platforms

Technologies & Experience

Extensive experience with a wide range of Linux distributions, automation technologies, custom ISO builds, custom container images, scripting languages and systems infrastructure.

/bin/sh Ansible Apache awk BASH C cgroups CSS Docker Docker ffmpeg ForgeJo FreeBSD Gerrit Git GitLab Go Helm HTML ImageMagick Jails Jenkins Kubernetes Linux netcat OpenBSD OpenSSH OpenVPN Perl pf PHP POSIX Python sed socat tcpdump VIM Wayland WireGuard WireShark X11 Xorg
30+ years of personal Linux & BSD experience
15+ years of professional Linux & BSD experience
Cross-platform systems expertise (Linux/BSD/macOS/Solaris/HP-UX/AIX)
Personal Information

Background

Berlin, Germany

Born in Bremen on March 15th, 1980. Lived in Dublin for 8 months. Lived in a flat without warm water but with fast internet. Went to school in Duisburg. Did stuff, then did some other stuff. German mother tongue and fluent English speaker. Currently based in Berlin, Germany; open for remote job offers.

German English

Personal

A mildly organized series of events

Born at 338 PPM (Bremen, Germany). Lived in Dublin for 8 months. Lived in a flat without warm water but with fast internet. Went to school in Duisburg. Did stuff, then did some other stuff. German mother tongue and fluent English speaker. Currently based in Berlin, Germany; open for remote.

Fractals

A showcase of fractals I rendered in Mandelbulber 2 / Mandelbulb3D

Mandelbulber2

Fractals I rendered in Mandelbulber 2

Fractals Mandelbulb 3D Infinity Recursion mandelbulber2

MB3D

Fractals I rendered in Mandelbulb3D (directory dump)

Fractals Mandelbulb 3D Infinity Recursion MB3D

Contact

Contact

I'm always excited to talk with people about crazy ideas and I love to hang out on IRC. If you feel bored, or you simply want to test your fresh new mechanical keyboard and type away, drop me a /msg ;-)

🖥 Contact:

    IRC: "armin" on Libera/OFTC/HackInt

    Email: Please simply prefix this domain name with "armin@"

    XMPP: armin@jabber.vg

  • I do sometimes use telephones, but probably not in the way you think.
  • Please do not send me voice messages or links to YouTube Shorts.

📍 Based in:

Berlin, DE (Open to remote)