Product Build Day // Recenzje 

This was a perfectly organised event with lovely people at a unique location. It was perfect both for the experience gained and the networking. Taking also into consideration that this was completely free, it was definitely one of the best work-related Saturdays. Highly recommended.

Experimenting with new tools, learning better prompting, meeting new people and haning fun

I had an amazing experience at Product Build Day // Warsaw. The event was very well organized, the challenge was engaging, and it was exciting to work with talented people from different backgrounds.

I especially enjoyed stepping outside my usual engineering role and focusing on product thinking while leveraging AI tools to bring ideas to life.

Beyond the competition itself, the opportunity to meet inspiring people, exchange ideas, and learn from others made the day truly valuable.

I had a great experience from start to finish. Everything was smooth, easy to use, and exactly as described. The quality exceeded my expectations, and the customer support team was friendly, responsive, and helpful whenever I had a question. I really appreciate the professionalism and attention to detail. I would definitely use this service again and highly recommend it to others.

The Athens edition of Product Build Day was an intensive and highly rewarding experience that demonstrated how individuals without a coding background can leverage AI tools to transform an idea into a working prototype within a single day. The initiative, originally conceived by Marcin Klimaszewski, brought together participants in a highly collaborative setting.
I particularly valued the opportunity to work in a multidisciplinary team on a real accessibility challenge: identifying user needs, building in Lovable, and testing with users. The emphasis extended beyond product development to validating assumptions, incorporating feedback, and presenting a final solution.
While additional time for user testing and iteration would further strengthen future editions, the overall experience offered an excellent balance of learning, teamwork, creativity, and practical problem-solving.

Marcin and the other mentos were amazing they help us elevate our thoughts and get our end products one step further.
Also the choice of the place as amazing Goulandris Foundation, in an amazing library that we did our great work.
Finally, the people joined all had something to share. All of these things made the experience unforgettable. It’s helped to refine our skills and create a network amazing people.

I attended the Product Build Day in Athens and it exceeded my expectations.
The sessions were practical, well structured and focused on solving real product challenges rather than just presenting theory.
What made the experience stand out was seeing a group of people who had never met before come together around a challenge introduced that same morning. By the afternoon, we had connected, exchanged ideas and co-created something as a team.
Marcin’s organisation was excellent from start to finish. It is an experience I would recommend without hesitation.

Product Builder Day was an inspiring workshop full of energy, collaboration, and great people. Working in small teams, we used AI tools like Lovable and Uxia to go through the entire product design process—from quick research and brainstorming to building, testing, and presenting a prototype.

My biggest takeaway was realizing that creating a product concept doesn't have to take weeks. With the right process, collaboration, and AI tools, it's possible to build meaningful solutions in a very short time—even with a team of people you've just met. Thank you to the organizers for such a well-designed and engaging event!

It was a nice day, got to know new people from the event and had the opportunity to test new tools. Looking forward to the next one.

Very creative, very challenging and very humanized in a very artificial world.

Extra kudos for keeping everything on time- I find it very important, and because Im in the Product world that is always an issue with long meetings during brainstorming ext.

The workshop was the best I have attended yet! The people were great and very like minded. Marcin had one of the best processes of doing the task in terms of how we worked individually and as a team! I can’t recommend it enough! Good job!!

The day was great. The hardest part was making the decision to go and actually showing up. After that, everything just flowed.

The host, the organizers, and the mentors were all incredibly professional. Everything was really high quality. I loved being surrounded by so much creativity and having the chance to try something new.

Great opportunity to network, test out AI industry standard tools for free, challenge yourself to build a working product prototype within just a day - with the assistance of experienced mentors.

I wasn't sure what to expect going into Product Build Day, but it ended up being one of the most practical product events I've attended.

Instead of spending the day listening to talks, we spent it building. In just a few hours, our team went from an idea to a working prototype using AI tools, tested it, and pitched it. All while solving a real challenge for the city of Athens.

What stood out most was the people. It brought together product managers, designers, founders, researchers, and marketers who were all genuinely interested in learning, experimenting, and helping each other. The mentors struck a great balance between guiding and letting teams figure things out on their own.

It was also refreshing to see a hackathon focused on meaningful, real-world problems instead of hypothetical startup ideas. Building something that could actually benefit the local community made the experience much more rewarding.

If you're curious about AI-assisted product development, want to sharpen your product thinking, or simply enjoy collaborating with talented people, I'd highly recommend joining a future Product Build Day. I left with new skills, new connections, and a much better understanding of how quickly ideas can become real products.

Product Build Day was an overall fantastic experience. Organisation was top-class, comfortable venue, clear communication, friendly and effective facilitation. I've spent entire day collaborating with like-minded people, building and testing products, solving challenges and pitching to mentors. Learned a ton, networked a bit, made lots of connections and discovered valuable insights for my job. Lots of fun for a great price (0). Highly recommend!

"An amazing experience building and networking with brilliant minds. The room was instantly packed with learning and high energy. Builders, do not miss out on this, highly recommended!"

One day, four strangers, one brief. We shipped a working AI tool by mid-afternoon and pitched it by evening. No fluff, no theory, just building under real time pressure.
The format works because it forces the two hardest PM skills: cutting scope fast and testing with real users before you're ready. Uxia's synthetic user testing in particular is something I now think about every time I scope a feature.
Bonus I didn't expect: I used the tool we built to review my own job contract a few days later. Real output, real use.
If you're in product or delivery and want proof you can still build, not just manage, this is worth a Saturday.

It was great to take part in this event and have the opportunity to challenge myself. Thank you🙏