zt.

$ whoami

Hi, I’m Zsolt.

I build and operate infrastructure.
Digital systems, physical systems, and everything in between.

Based in
Sierra Leone
Here for
~15 years
Focus
Infrastructure

01 About

I’m an engineer with a long-standing interest in how systems work — not just in theory, but in real environments.

Much of my work has involved designing, operating, and troubleshooting infrastructure: networks, servers, power systems, and the processes around them.

I’ve lived and worked in Sierra Leone for almost 15 years. That time has given me a deep understanding of the local internet ecosystem — how networks here connect, where traffic really flows, and what it takes to keep things running in real conditions.

I value clarity, practicality, and solutions that remain reliable over time. I’m less interested in trends and buzzwords, and more interested in things that quietly work.

02 Things I care about

03 What I do

My work mostly revolves around infrastructure and systems engineering. This includes network design and operation, server infrastructure, monitoring, automation, and reliability work.

Among other things, I built an Internet Exchange Point in Sierra Leone, where networks peer over BGP to keep local traffic local and depend less on international transit.

Some projects touch telecom platforms or large deployments, but the underlying focus is always the same: understanding the system as a whole and making it work better.

04 Consulting

I take on consulting work — design, setup, troubleshooting or a second pair of eyes.

Networking & MikroTik

Everything MikroTik. Routing (OSPF, BGP), firewalls, radio links point-to-point and point-to-multipoint, hotspots, VLANs and QoS — new builds or untangling existing ones.

Linux servers

Setup, hardening, monitoring and keeping them running: web, mail, DNS, RADIUS, databases and the services around them.

IPsec & VPNs

Site-to-site and remote-access tunnels between MikroTik, Linux, Juniper, Cisco and cloud — including the ones that keep dropping.

SMS

SMPP connections, bulk and transactional messaging, OTP and delivery reports, gateways between your systems and the operators.

USSD

USSD menus and services end to end: session flow, integration with mobile operators and your back-end.

Online radio

Streaming servers, encoders, players and apps — getting a station on the internet and keeping it on air.

Get in touch

05 Early days

Where it started — community wireless networks and my first code.

$ cat early-days.txt — private

06 Where I’ve worked

07 Outside of work

I’m interested in mechanical systems, power and energy flow, geography, and how infrastructure shapes daily life.

I enjoy hands-on problem solving — diagnosing issues, improving setups, and understanding why things fail.

I also farm. I keep livestock — chickens, pigs, goats and cows — and crocodiles. A farm is a system like any other: feed, water, power and health all have to keep working, every day.

On weekends you’ll find me on a dirt bike — enduro, off the beaten track. And at the bench, building electronics: DIY projects and IoT devices, from soldering iron to working sensor.

$ play ringtone.mp3

Even I Drove Two Hours

My first ringtone · 0:42

Download MP3

08 Writing

I occasionally write short notes about engineering, infrastructure, and systems thinking.

$ ls notes/ — coming later

09 Contact

You can reach me via email: