Christian Kaatz - Illustration Christian Kaatz

[ hover to meet the real me ]

VP of Technology — STAK Energy

Christian Kaatz

From selling ice in Paraguay at age 7 to building energy infrastructure in Alaska. This is the story.

scroll
Origins
German roots, Paraguayan grit
My family left Germany before WW2 and landed in Paraguay. That's the kind of background where nobody sits around waiting for instructions — you figure it out, you build it, you fix it, you move on. That mindset basically runs in the bloodline.
~1988 · Age 6
My mom's promise
But if my dad was all work-work-work, my mom was the one who saw the bigger picture. When I was six years old she told me: "If you speak English well enough by the time you're 16, I'll send you to the United States for a year." I learned English. And as you can see — she kept her promise.
1989 · Age 7
The ice kid
My dad had this philosophy: people only get tired of doing the same thing. So school was my break from work and work was my break from school. By age 7, I was selling ice for the family ice-making business. Not lemonade stands — actual ice distribution in Paraguay.
1992 · Age 10
The electromechanical shop
By 10, I graduated to my dad's electromechanical shop. Picture a kid rewinding electrical motors, fixing alternators and car starter engines, and handling freon gas for the ice-making equipment. I didn't know it at the time, but that shop is where I learned to think about systems — how things connect, how they break, and how you bring them back to life.
~1996 · Age 14
Towers, antennas & the car supply shop
My dad was a ham radio amateur, and around 14 I started climbing towers with him to mount his HF and VHF antennas and run cables. That was my first real brush with telecoms — standing on a tower in Paraguay, helping my dad get a signal out to the world. That skill would come back to save me in ways I couldn't have imagined. At the same time, I moved over to the family's car supply shop and worked the counter. Different kind of education — customers, inventory, sales. Every role my dad put me in added a different layer.
~1995–1997 · Age 13–15
My brother, the gateway
Before the ISP was even a dream, it was my brother who opened the door to technology. He's the one who introduced me to MP3s and mIRC chats back in 1995 — my first real taste of what computers could actually do. He pulled me into that world, and later, into the internet itself. He was already selling internet connections for QuantaNet in the capital, and by the time I was 15, I started selling dial-up connections through him for the same company — but in Villarrica, as a side job. That was my first real brush with the business of connectivity, years before gua-i ever existed.
1999–2000 · Age 16
Highland Park, Texas
At 16, I left Paraguay through AFS for an exchange year in Highland Park, Texas, where I did my senior year of high school. That was my first real taste of the US and it planted a seed that would come back around later.
2000 · Age 17
The fuse gets lit
Came back to Paraguay at 17 and something had shifted. Technology was pulling me in hard. I started toying with computers — breaking them more than fixing them at first, honestly — but that obsession is what lit the fuse.
2001 · Age 18
gua-i.com.py — The first company
My brother and I co-founded gua-i.com.py — part local portal for information and social pictures, part "showing my state to the world," and part ISP. That last part is the one that stuck. Linux servers with monochrome screens, US Robotics dial-up modems, and a whole lot of "let's just try it and see what happens." No investors, no playbook — two kids in Villarrica, a small town in southern Paraguay, wiring the internet together with whatever we could find. Turns out all those years fixing motors and selling car parts taught me more about running a business than any class could have.
2004–2006
The tower climber
For the first three or four years, I couldn't afford proper insurance for my employees. So to avoid putting anyone at risk, I climbed the towers myself and installed all the wireless infrastructure by hand — antennas, cables, everything. All those years climbing towers with my dad as a kid paid off. Sadly iPhones weren't a thing yet, so there are no selfies from 40 meters up. Just trust me on this one.
2007
Go! Internet is born
gua-i merged and became Go! Internet (legally Internet & Media S.A.). On paper I was hopping between CEO and CTO, but the reality was I did everything — network design, hiring, firing, office layout, customer service, budgeting, testing new tech, learning whatever I needed to learn next. I had a commercial partner, a major shareholder, helping steer, but he focused on financials. The rest was me. Over 20 years I took that small-city company from zero to 5,000 customers, evolving the technology every time the market shifted — dial-up to ADSL, ADSL to wireless, wireless to fiber.
University years
Software engineering (mostly)
My mom was also the one who pushed me into university — software engineering, five full years, the closest thing to telecoms I could find in the area. And all the training I got in Linux, networking, cybersecurity, Cisco — that was her too. The company wasn't producing much in the early days, so she was the one sponsoring my education trips to the capital. My dad's philosophy held up — the real education was the work — but my mom made sure I had the tools to do it right. I never finished my thesis because it would've pulled too much time away from the company I was actually building.
2018
The Ufinet breakthrough
While scouting for more stable providers to increase my uptime, I connected with Ufinet. They had this great salesman who convinced me to join them, and everything changed. We did the first joint GPON development right there in Villarrica. That product later became the blueprint Ufinet expanded across all of South America. One of the most successful fiber rollouts in the region, and it started in a town most people have never heard of.
2020
Covid, gaming & mining fever
Covid locked down Paraguay and the ISP exploded with demand. I was pulling 12–14 hour days keeping up with the rapid growth during lockdown. To de-stress, I built a high-spec gaming PC with an Nvidia 3070. Then in January 2021, "mining fever" started gripping Villarrica. A friend pointed out that my graphics card could be put to more lucrative use. I did some math. That was the last day I played video games.
2020–2021
Down the rabbit hole
Started stacking sats — didn't fully understand yet why I had to, but I did. Germans and manuals, you know how it is. One rig turned into two, two turned into seven — each with 8 GPUs. Started running them at the house. That worked great until the switches started tripping and my wife Chuky started asking why she kept losing electricity. But something bigger was happening: my understanding of Bitcoin — its real worth, what it actually represents — started clicking into place. The ISP kid, the motor shop kid, the tower climber — it all came back in a different shape.
2021
Penguin Group — All in
Penguin Group showed up in my neighborhood. A guy who'd been running an ISP for 20 years straight, had built mining rigs from scratch, knew the local power grid, and could climb a tower if needed — it was a natural fit. Chuky was the one who pushed me to make the leap. She saw how happy it made me to jump into new things and told me to risk it for what excites me. I'll be thankful to her my whole life for that. I sold my stake in Go! Internet and invested it straight into Penguin. No hedging, no safety net — all in. I stepped in as Chief Data Center Officer with a clear mission: design, build, and run a 100MW data center powered by hydroelectric energy next to the Itaipú dam. Managing teams across networking, security, a microelectronics lab, maintenance, and our own electrical substation. The kid who used to rewind motors in his dad's shop at age 10 was now running a substation. Full circle.
2021–2025
Public voice for legal mining
That role put me in the spotlight as a public voice for legal crypto-mining in Paraguay. International press, national TV — explaining how the industry creates real jobs and real infrastructure when done right. Same story as always: take something people dismiss and build something legit out of it.
Late 2025
STAK Energy
By end of 2025, I'd accomplished what I was hired to do at Penguin. The data center was designed, built, and running. That's when STAK found me. I already knew Andrew and Todd from our time at Penguin — both are people I genuinely admire. Not just for their capabilities, but for the type of people they are. When they told me about the project, I fell in love with it. Alaska instead of Paraguay, but the same DNA: take stranded resources, build infrastructure, create value where other people see nothing. Now I'm at STAK Energy as VP of Technology, helping bring systems and order to a company in a major growth phase. Different continent, different climate, same mindset: figure it out, build it, make it work.
My father did anything and everything to grow, learn, experiment, and enjoy building. That is the one thing I feel as a main truth about myself — about my past, my present, and most certainly my future. STAK is the place with the greatest potential I have ever seen to fulfill my place in a life of building.

Contact

LinkedIn christian-kaatz
Location Asunción, Paraguay → Alaska, USA