Get back the hours your company burns on manual work.

The building-permit applications were the worst part of the job in our office, everyone avoided them. Mateusz built a tool that fills them in automatically, straight from our client database, and within the first month we had dozens of hours of work back. Along the way it tidied up the whole firm: better oversight of projects, clearer task distribution, smoother client communication. It is rare to meet someone who understands how an office like ours actually works this fast, and then simply builds it. We came straight back to him for an AI training day for the whole team.

Mateusz built the whole 21REBOOT setup. The page, the automation that pulled our data together so I wasn't updating it by hand. He works fast and he ships. I asked for things and they existed. Stuff I thought would take a week showed up same day. If you're building anything, he's your guy.

Our session was great. The main thing that stuck with me was how important planning and scoping are, and that you can just ask Claude to fix things later, speed, mobile friendliness, whatever, if it lands wrong the first time. I have been using both of those almost daily for months. I am now deploying the first parts of our in-house software to my team.

Mateusz's workshops at Network School inspired me to start using Claude Code. Thanks to his mentorship, I built the entire launchpad for VIBER, a company I co-founded. He gave me the confidence and practical skills to create software at a level I never imagined possible.

I spent 25 years on both sides of government and I never wrote a line of code. Mateusz's Claude sessions at Network School helped inspire me to become a founder and creator, and I built Mirror, a real-time AI platform where you rehearse your highest-stakes conversations with avatars that see, hear and respond live. The whole stack. Mine. If you are a domain expert watching AI from the sidelines thinking it is not for you, it is. I am proof.

Mateusz sat down with me at Network School and showed me how to actually use Claude for my own work: which tool fit what I was doing, and where to start. I left knowing my next step instead of guessing. He passes on what he knows without ever making you feel stupid for asking.

When I needed to get properly fluent in building with LLMs, Mateusz was who I went to. He explained agent architecture, the API versus the SDK, and how to set up a harness in a way that finally made it concrete instead of theoretical. He looked at what I built and gave me straight feedback. Generous with his time, and very clear about what actually matters.

The building-permit applications were the worst part of the job in our office, everyone avoided them. Mateusz built a tool that fills them in automatically, straight from our client database, and within the first month we had dozens of hours of work back. Along the way it tidied up the whole firm: better oversight of projects, clearer task distribution, smoother client communication. It is rare to meet someone who understands how an office like ours actually works this fast, and then simply builds it. We came straight back to him for an AI training day for the whole team.

Mateusz built the whole 21REBOOT setup. The page, the automation that pulled our data together so I wasn't updating it by hand. He works fast and he ships. I asked for things and they existed. Stuff I thought would take a week showed up same day. If you're building anything, he's your guy.

Our session was great. The main thing that stuck with me was how important planning and scoping are, and that you can just ask Claude to fix things later, speed, mobile friendliness, whatever, if it lands wrong the first time. I have been using both of those almost daily for months. I am now deploying the first parts of our in-house software to my team.

Mateusz's workshops at Network School inspired me to start using Claude Code. Thanks to his mentorship, I built the entire launchpad for VIBER, a company I co-founded. He gave me the confidence and practical skills to create software at a level I never imagined possible.

I spent 25 years on both sides of government and I never wrote a line of code. Mateusz's Claude sessions at Network School helped inspire me to become a founder and creator, and I built Mirror, a real-time AI platform where you rehearse your highest-stakes conversations with avatars that see, hear and respond live. The whole stack. Mine. If you are a domain expert watching AI from the sidelines thinking it is not for you, it is. I am proof.

Mateusz sat down with me at Network School and showed me how to actually use Claude for my own work: which tool fit what I was doing, and where to start. I left knowing my next step instead of guessing. He passes on what he knows without ever making you feel stupid for asking.

When I needed to get properly fluent in building with LLMs, Mateusz was who I went to. He explained agent architecture, the API versus the SDK, and how to set up a harness in a way that finally made it concrete instead of theoretical. He looked at what I built and gave me straight feedback. Generous with his time, and very clear about what actually matters.

The building-permit applications were the worst part of the job in our office, everyone avoided them. Mateusz built a tool that fills them in automatically, straight from our client database, and within the first month we had dozens of hours of work back. Along the way it tidied up the whole firm: better oversight of projects, clearer task distribution, smoother client communication. It is rare to meet someone who understands how an office like ours actually works this fast, and then simply builds it. We came straight back to him for an AI training day for the whole team.

Mateusz built the whole 21REBOOT setup. The page, the automation that pulled our data together so I wasn't updating it by hand. He works fast and he ships. I asked for things and they existed. Stuff I thought would take a week showed up same day. If you're building anything, he's your guy.

Our session was great. The main thing that stuck with me was how important planning and scoping are, and that you can just ask Claude to fix things later, speed, mobile friendliness, whatever, if it lands wrong the first time. I have been using both of those almost daily for months. I am now deploying the first parts of our in-house software to my team.

Mateusz's workshops at Network School inspired me to start using Claude Code. Thanks to his mentorship, I built the entire launchpad for VIBER, a company I co-founded. He gave me the confidence and practical skills to create software at a level I never imagined possible.

I spent 25 years on both sides of government and I never wrote a line of code. Mateusz's Claude sessions at Network School helped inspire me to become a founder and creator, and I built Mirror, a real-time AI platform where you rehearse your highest-stakes conversations with avatars that see, hear and respond live. The whole stack. Mine. If you are a domain expert watching AI from the sidelines thinking it is not for you, it is. I am proof.

Mateusz sat down with me at Network School and showed me how to actually use Claude for my own work: which tool fit what I was doing, and where to start. I left knowing my next step instead of guessing. He passes on what he knows without ever making you feel stupid for asking.

When I needed to get properly fluent in building with LLMs, Mateusz was who I went to. He explained agent architecture, the API versus the SDK, and how to set up a harness in a way that finally made it concrete instead of theoretical. He looked at what I built and gave me straight feedback. Generous with his time, and very clear about what actually matters.