In the meeting
Decided by rank
Without evidence in the room, the most senior opinion usually wins.
One-day training for product managers, product owners and designers
Build it.
Test it.
Get the
decision.
Take an idea from opinion to decision in one hands-on day. You build a working prototype with AI, test it with users and bring the evidence to the person who decides. No coding needed.
26 Nov 2026
Berlin · Thursday · 09:00 to 17:00 CET
€690per seat until 31 October
€790 after, no VAT
Curated group of 12In English, in personTrainer: Marcin Klimaszewski, Certified Lovable Expert.Certificate and follow-up
130+ trained
6 countries
, , , , and
What gets in the way
Where ideas get stuck.
“I think this is a good idea” is not enough. Prove it with data.
In your week
33.6%
of a product owner’s time goes to unplanned ad hoc work. That is more than a day and a half a week.
Productowner.nl, 12 Oct 2026, from its survey of 670 product ownersIn the budget
40%
of professionals and managers say they lack the budget their UX work needs.
MHP UX Maturity Report, Feb 2026, 100 respondentsOn every screen
Prototypes everywhere
AI made building cheap, so every meeting now has a demo. The one with evidence behind it gets the team.
One day of Pro trains the habit that gets an idea past all four: build it, test it, bring the evidence.
The room this is for
Why it pays off
One day teaches a skill you use every time you bring an idea to your boss. You build a prototype people can click, test it before anyone writes code, and ask for a decision that is easy to make.
Your company gets a product person who turns ideas into tested prototypes in a day, without waiting for a sprint. That means fewer features built on a hunch, and shorter meetings about what to build next.
71%
of product people say they don’t spend enough time with customers or understanding the market.
Product Focus survey 2026, 677 respondents, 83% in EuropePeople who built with us in 2026 work at
What you learn
Three moves between an idea and a decision.
You practice all three on one shared brief with a real buyer behind it. Then you run them on your own ideas at work.
1
Build
make the idea realSKILL 01
Decide what would kill it
Define the challenge and decide what kind of metric would kill it before you test.
Ability: you can point at a roadmap item and say which number would make you drop it.
SKILL 02
Build it with AI, no code
Plain English in, a working app at a URL out. Vibe coding is the easy part, so you learn the tool by lunch.
Ability: you can show a working screen where you used to show a slide.
2
Test
make it usable, then plan the real testSKILL 03
Fix what users stumble on
AI testers and the people at your table go through it. You fix what trips them up and run it again.
Ability: you find usability problems in an afternoon, before anyone writes production code.
SKILL 04
Design the test with real customers
Who you test with, what you measure, what it costs, and the number that means go.
Ability: you can run a first customer test the next week, without a research budget.
3
Decide
bring the evidence to the people who decideSKILL 05
Make the case in three minutes
Rehearsed at your table with questions, then in front of the room.
Ability: you can take an idea to your CEO, head of product or an investor and leave with a go, a pivot or a no-go.
GO
The decisionmade on what people did.
Usually half of the pitches were cut off mid-sentence. That is why making the case is on the syllabus, with time to rehearse it.
Where AI testers stop.
Two kinds of evidence
AI testers find usability problems fast. Whether anyone will pay is a question only real customers can answer, so the two stay apart all day.
During the training
Can people use it?
AI testers go through your prototype, then the real people at your table. You fix what trips them up and run it again.
AI testers and your table
After the training
Is it worth building?
That takes real customers. You leave with a designed test you can run after the training. It proves or kills your idea with metrics you decided up front.
Real customers only
Your three minutes
Make the case in three minutes.
0:003:00
01
The thing on screen
Show it working. People believe what they can click.
02
What would kill it
The metric you set before testing, so nobody moves the goalposts.
03
What users did with it
Where they stumbled, and what you fixed.
04
The real test
Who, what it costs, when, and the number that means go.
05
Your ask
One decision they can make today.
Why the decision matters
Imagine you get three minutes in the next roadmap meeting and your idea lands. Then come the questions. Did anyone try it? What would it cost to know for sure? You answer that you built it, fixed what testers stumbled on, and have a customer test with a date and a number. Now the room can decide on evidence. That is why it matters.
Your trainer
Marcin Klimaszewski
Marcin built this format and runs product discovery workshops across Europe. Before going solo he led a 35-person UX team in five countries at Sanoma Learning. He works with you through the build, the test and the pitch.
"Really great experience. Marcin did an amazing job to keep everyone engaged"
UA
Umair AlamSr. Data Analyst, Flix · BerlinNot sure it fits?
Book 15 minutes with Marcin.
What people said about each move
Build
"The most exciting part was seeing an idea go from a rough concept to something tangible in such a short time."
AM
Ali MerkoukDigital Experience Designer · CopenhagenTest
"Every piece of feedback was detailed enough for the team to discuss it, extract something useful and improve our current version."
OG
Olena GrygorievaProject & Product Manager · BerlinTest
"A single test run provides a lot of valuable groundwork for sharpening hypotheses and preparing better questions for interviews with real people."
VV
Valeria VolosachProduct Manager · BerlinPitch
"The presentation, along with its spontaneous, ad-hoc atmosphere, was the defining moment of Product Day and one I will remember for a long time."
VD
Vladimir DeriuginCopenhagen26 November / 09:00 to 17:00 CET
A day that ends in a decision.
Small tables, the same people all day. Lunch and two breaks are in the day.
Define
You get the brief, define the challenge and decide what kind of metric would kill it before you test.
Build
Two hours of building with AI, with Marcin and your table next to you.
Test
AI testers go through it, then your table. You fix what they stumble on and design the first test with real customers.
Decide
Three minutes each at your table, with questions, then selected cases for the room. We close at 17:00.
Berlin
Bring a tested idea to your next review.
Buy your seat for 26 November. Pay by card and your seat is confirmed at once.
€690per seat until 31 October, €790 after
invoiced to your company, no VAT
invoiced to your company, no VAT
Team offer: every third seat is free.
Need a yes from your manager first? Get the note that asks for it
Pay by bank transfer
Prefer an invoice? Send your details and Marcin sends a pro forma within 24 hours. You can also do this while you wait for your manager's approval. Nothing is charged.
Or email [email protected].
No cancellation or refund. If you can't come, you can transfer your seat to a colleague until 24 November.
Your manager needs three things: what it costs, what the company gets back, and a document for procurement. All three are here.
Fits the budget
€690One day fits inside a typical training budget. In Germany, 65% of employers set aside at most €1,000 per employee a year.
TÜV training study 2026, 500 company decision-makersUse it this year
31 Dec63.1% of product owners leave part of their training budget unspent at the end of the year. 26 November comes first.
Productowner.nl survey 2026, 670 product ownersSafe with your data
No company dataEveryone builds against the same brief with sample data, so nothing from your company’s systems goes into an AI tool.
What one quarter costs
“An idea that cannot survive a day is not worth a quarter.”
Put in your own team’s numbers. The day costs the same either way.
Building it for 13 weeks costs€120,000One Pro seat is €690, 0.6% of that.
Example numbers. Change them to your team’s real ones.
What your company gets
- ✓Ideas that arrive with a prototype and test findings, so decisions happen before engineering time goes in.
- ✓Someone who can put a first version of an idea in front of users within a day.
- ✓A recap and the prototype, shared with your team after the training.
- Training
- Product Build Day Pro
26 November 2026, 09:00 to 17:00 CET, Berlin - Fee
- €690 per person until 31 October, €790 after
Company invoice without VAT (small business exemption, § 19 UStG) - Included
- Training, tools, lunch, prep call, a 45-minute follow-up and a certificate of completion with your name, the five skills, 8 hours of training and a credential ID for LinkedIn
- Budget separately
- Travel and accommodation.
- Terms
- No cancellation or refund. Transfer to a colleague until 24 November.
A note to your manager
Before you decide
A few practical answers.
Do I need to know how to code?
No. You need to be comfortable with web tools and talking about product work in English. A short call the week before covers the setup. Bring your laptop.
Is this a vibe coding course?
Partly. You build with AI, and that is the easy part. Most of the day goes into testing what you built and getting it decided.
I already build with AI every week. Is this for me?
Yes, if you want the testing and the decision part. The build hours will feel familiar. Most of the day is about what happens after you build.
Can I bring my own idea?
On the day everyone builds against the same brief, so the room can compare real work and nobody defends a pet idea by reflex. The 45-minute follow-up is where you run the method on yours.
Who do I pitch to on the day?
Your table first, three minutes with their questions, then selected demos for the whole room. It is the rehearsal for the pitch you give your own decision-makers.
Does any company data go into AI tools?
No. Everyone builds against the same brief with sample data, so nothing from your company’s systems is needed on the day.
What certificate do I receive?
A certificate of completion with your name, the five skills, 8 hours of training and a credential ID for LinkedIn.
How does my company pay?
By card at checkout: your seat is confirmed at once and the invoice goes to your company by email. Or by bank transfer against a pro forma: email [email protected] or send your details from the bank transfer box. €690 per seat until 31 October, €790 after that. That is the full invoice amount: no VAT is charged (small business exemption, § 19 UStG).
Can I cancel?
No. Seats can't be cancelled or refunded. If you can't come, you can transfer your seat to a colleague until 24 November, two days before the event. Email [email protected] with their name and work email.
Can I request a seat while I wait for approval?
Yes. Under the buy box, choose to pay by invoice and pick “I need employer approval” in the form. Nothing is charged at that point.
Is there a team offer?
Yes. Every third seat is free: 3 seats cost the price of 2, and 6 seats cost the price of 4. One order can have up to 6 seats, and one person can book up to 6 seats in total.
Can I buy a seat as a private person?
No. Pro is sold to companies only, so checkout asks for the company name, address and VAT ID.
26 November · Berlin€690 until 31 October · Company invoice, no VAT
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