Radek Sienkiewicz

Hi, I'm Radek!

I build AI agent systems and help companies implement AI that works in practice. I'm a maintainer of OpenClaw, the open-source AI assistant platform. I run my own AI setup 24/7 and make YouTube videos about AI workflows, agent architecture, and practical automation.

I also have 15+ years in conversion optimization, which means I think about AI from the "does this actually move a business metric" side.

About this site

VelvetShark is where I share what I build, learn, and think. Articles, videos, projects, book summaries. I don't worry about whether something fits a niche. If it's useful or interesting, it goes here.

It's also my playground for testing new tools and ideas.

Why Velvet Shark?

Story time. I'm fortunate enough to have a group of 10 close friends. We've all met each other during our university years and we've stayed close ever since, even though many of us live now in different cities or even countries.

Back in the days, when there was no WhatsApp, no Messenger, not even Facebook, we still had the need to communicate and to keep in touch. As I have always been the "techy" one, it was on me to come up with a solution. I ended up self-hosting an email list, where you sent an email to one email address and it would be forwarded to everyone in our group. And I needed a name for this email broadcast list.

At the time, we were all either finishing university or have just graduated and we started entering the job market. More and more of us were ending up in big corporations. Except for me, I was already a freelancer.

A little bit out of jealousy and a little bit out of pride, I came up with the name "Business Sharks", to friendly mock my corpo-friends. The email ended up being [email protected] (I don't even remember the domain name now).

At first, we jokingly started to call ourselves that, and after some time, everyone forgot the etymology, "Business" was dropped but "Sharks" stayed. Ever since, we have always been the Sharks. For years, we even had shark-themed t-shirts when we were going for trips together.

The Sharks, ages ago, just before the start of an epic trip to the seaside.

Now we all have families, all the babies are invariably "baby sharks" and I bet I'm the only one who remembers how the name came to be.

That explains the shark. What about velvet?

In part, it was the only shark-related .com domain name that made any sense. But also, to contrast and soften the sharpness of a shark. A predator, but a soft one. Kinda like a Smooth Criminal, just not a criminal.

Want to get in touch?

Drop me an email at [email protected], DM on Twitter, or find me on LinkedIn.