Ostrava, CzechiaLinux Sysadmin & DevOps

Hey, I’m

Tomáš
Zatloukal.

also known as KezzyOfficial

I keep Linux systems healthy, build self-hosted infrastructure and create the tools I want to use.

KezzyOfficial identity mark
kezzy@arch ~
$ whoami
linux_admin
$ uptime
369 days, still rolling
$ systemctl is-system-running
running_
Arch LinuxDAILY DRIVERARCH LINUX
SCROLL TO EXPLORE ↓
GNU/Linux◆Proxmox VE◆Docker◆Bash◆Kotlin◆Gradle◆Wayland◆Networking◆GNU/Linux◆Proxmox VE◆Docker◆Bash◆Kotlin◆Gradle◆Wayland◆Networking◆

More than an admin.
A builder.

I’m 21, based in Ostrava, and most at home where Linux, infrastructure and original ideas overlap.

I work fully remote across Linux systems and DevOps. Outside work, I’m building Shimatsu Network — my long-term infrastructure project and a place to explore virtualization, containers, networking, mail and game services. If the right tool is missing, I’d rather make it.

369days on this Arch install
3displays in my daily setup
100%remote by default

Work &
experience.

Infrastructure needs more than commands. Clear thinking, ownership and communication matter when the pressure is real.

AUG 2026 — PRESENT20 AUG

Linux Sysadmin & DevOps

FULL REMOTE

Remote administration of GNU/Linux systems, incident resolution, service operations and practical DevOps automation. Independent ownership, careful diagnostics and calm execution when something breaks.

APR 2023 — PRESENT07 APR 2023

Founder / CEO

SHIMATSU NETWORK

Designing and operating Shimatsu Network from the ground up: virtualization, containers, mail, web workloads, networking, observability and the roadmap beyond the homelab.

2024 — 20251 YEAR

Client Centre Specialist

RIXO a.s.

Handled complex customer requests and high-pressure conversations while working precisely with internal systems and data.

Shimatsu

My digital
proving ground.

Proxmox is the foundation. Above it, VMs and containers form a private ecosystem I can understand, rebuild and keep improving.

Join the Discord↗
HYPERVISOR / PRIVATE NETWORKPROXMOXHOST
NODE_01 · PRIVATENPMCHECKING
NODE_02 · PRIVATEWeb & DockerCHECKING
NODE_03 · PRIVATEStalwartCHECKING
NODE_04 · PRIVATEPelicanCHECKING
NODE_05 · PRIVATEHeadscaleCHECKING
NODE_06 · PRIVATEHermesCHECKING
LIVE REACHABILITYLast checked: — · 60sPRIVATE INFRASTRUCTURE
01
Founder / CEO

Shimatsu Network

A self-hosted infrastructure project built from bare metal upward. A homelab today, a platform with much bigger ambitions tomorrow.

Proxmox · KVM/LXC · Docker · Networking
02
Custom web client

Shimatsu Mail

A purpose-built mail interface for the Shimatsu.eu ecosystem, shaped around the way the infrastructure is actually used.

Web development · Stalwart · Self-hosted
03
Plugin development

Minecraft tooling

Kotlin plugins built with Gradle: practical server tools and game systems instead of stitching together whatever already exists.

Kotlin · Gradle · Server ecosystems

Built around
my workflow.

A full-AMD workstation, an ultrawide centre stage and a Linux environment tuned to feel like mine.

CPUAMD Ryzen 5 7500F
GPURadeon RX 7800 XT
MEMORY32 GB DDR5 · 6000 MT/s
STORAGE1 TB + 2 TB NVMe
DESKTOPMango + Noctalia · Wayland
TERMINALKitty
1366 × 76860 Hz · the survivor
3440 × 1440180 Hz
1920 × 1080165 Hz

Make the first
packet count.

Job offer, infrastructure problem or an ambitious build — send the useful context and I’ll get back to you.