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jackspiering/README.md
jack@github:~$ ./whoami.sh

> Role:     Security Engineer & Advisor
> Work:     Orange Cyberdefense
> Location: The Netherlands
> Focus:    Zero-trust, IaC & Automation
> Blog:     plugntroubleshoot.eu
> Quote:    If it isn’t automated, it isn’t done.

Who is Jack

Cybersecurity Engineer with a focus on network operations and automation.


Homelab

The core of the lab is an Intel NUC8i3BEH running Proxmox. I run a mix of LXCs and a dedicated Docker host VM. Networking is handled by UniFi equipment.

I've moved most of the setup to Infrastructure as Code. OpenTofu for provisioning and Ansible (through Semaphore) for configuration.

Tailscale

Tailscale is a core part of how I access everything. It gives me a flat, but segmented, network across devices without opening ports to the internet, and it fits well into a simple zero-trust approach at home.

In January 2026 I became a Tailscale Insider for the work on ScaleTail, which is now under the tailscale-dev organization.


Career

My affinity for technology started young (yes, I remember floppy disks). My professional journey began in media-rich environments, maintaining digital systems for studios streaming to the internet. During these early years, I was lucky to learn from Roland Sellis and Arno Kouters as my mentors who truly loved their craft and passed that spark on to me.

As my interest shifted toward the 'hacker' side of the spectrum, I studied Information Security Management to understand the intersection of policy, technology, and psychology. I began my tenure as a Cybersecurity Analyst, gaining insight into SOC and SIEM architecture while witnessing the rapid evolution of the Microsoft security suite. Following that, I stepped into the role of a Cybersecurity Consultant. This was effectively a crash course in the modern professional landscape, forcing me to tackle unfamiliar subjects and significantly accelerating my learning curve.

Later, I took on the responsibility of IT Security Manager at a hospital. Working in healthcare was particularly impactful; it taught me that security decisions are never just technical, they directly influence patient safety and health outcomes.

Currently, I serve as a Cybersecurity Engineer at Orange Cyberdefense, working alongside talented ethical hackers (shoutout to crypt0rr and other cybersecurity professionals. I realized that the industry is too broad to know everything. Consequently, I decided to specialize in Network Operations—because mastering the TCP/IP stack provides the strongest foundation for everything else in security.

I look forward to future technological advancements; they keep my career interesting and my motivation high. Contributing to a more secure (f)society is what drives me.


Outside work

Gym, movies, series, and music. During COVID I spent a lot of time in FL Studio and still make beats when I feel like doing something creative.

I also run plugntroubleshoot.eu. Mostly to get better at technical writing and to help others by going through troubleshooting for them first.


Tools I use a lot

Infrastructure as Code & Automation

OpenTofu Packer Ansible PowerShell YAML Hugo Cloudflare

Virtualization

Proxmox Docker

Storage

TrueNAS Synology

Networking

Tailscale Ubiquiti

Operating Systems

macOS Debian Kali Linux Windows


Support Me

If my projects, repos, or blog posts have helped you, feel free to buy me a coffee!

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  1. tailscale-dev/ScaleTail tailscale-dev/ScaleTail Public

    Tailscale Sidecar Configurations for Docker

    Python 2k 119