One-day training for product managers and designers

Build it.
Test it.
Pitch it.

Learn how to turn your idea into an approved one. In one hands-on day you build a working prototype, test it with users and learn to defend it in front of the people who decide. No coding needed.

A participant makes his case to his table at Product Build Day in Warsaw, laptops open around him.

26 Nov 2026

Berlin · Thursday · 09:00 to 17:00 CET

€690net per seat until 31 October
€790 net after

Up to 24 seatsIn English, in personTrainer: Marcin Klimaszewski, Certified Lovable Expert.Certificate and follow-up
120+ trained
6 countries

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Lovable Certified Partner 2026

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 next step that is easy to approve.

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.

Participants listen to a teammate explain his idea at Product Build Day in Warsaw.
60%

of product people name leadership escalations as what most often overrides their priorities.

State of Product Management Report 2026, ProductPlan

People who built with us in 2026 work at

What you learn

Three moves between an idea and a yes.

You practise 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 real

SKILL 01

Decide what is worth building

Find the belief the idea rests on, and the smallest thing that could prove it or kill it.

Ability: you can point at a roadmap item and name the one thing worth testing first.

SKILL 02

Build it with AI, no code

Plain English in, a working app at a URL out. You build only what the test validates.

Ability: you can show a working screen where you used to show a slide.

2

Test

fix what users stumble on, plan the first customer signals

SKILL 03

Improve it with synthetic users and your table

Synthetic users and the real people at your table go through it. You fix what trips them up and run it again.

Ability: you can find usability problems in an afternoon, before anyone writes production code.

SKILL 04

Design the test that could kill it

Who you test with, what you measure, what it costs, and the number that means go.

Ability: you can run a first customer test even on the next day, without a research budget.

3

Pitch

defend it and ask for the decision

SKILL 05

Pitch it to the people who decide

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 ask for a next step.

YES

The decisionmade on what people did.

Usually half of the pitches were cut off mid-sentence. That is why the pitch is on the syllabus, with time to rehearse it.

Your three minutes

Pitching: the skill you need, trained here.

0:003:00

01

The thing on screen

Show it working. People believe what they can click.

02

The belief you bet on

The one assumption that has to be true.

03

What users did with it

Where they stumbled, and what you fixed.

04

The test that could kill it

Who, what it costs, when, and the number that means go.

05

Your ask

One decision they can make today.

Why pitching matters

Imagine you get three minutes in the next roadmap meeting and your pitch lands. Then come the questions. You answer that you already built the prototype, tested it with users and found the first signals that it is worth investing. That is why it matters.

Marcin Klimaszewski

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.

Lovable Certified Partner 2026
"Really great experience. Marcin did an amazing job to keep everyone engaged"
UA
Umair AlamSr. Data Analyst, Flix · Berlin

Not sure it fits?

Book 15 minutes with Marcin.

Book 15 minutes

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 · Copenhagen

Test

"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 · Berlin

Test

"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 · Berlin

Pitch

"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 DeriuginCopenhagen

26 November / 09:00 to 17:00 CET

A day spent doing the work.

Small tables, the same people all day. Lunch and two breaks are in the day.

Frame

You get the brief, pick the belief that matters and plan the smallest test.

Build

Two hours of building with AI, with Marcin and your table next to you.

Participants building a prototype with AI on two laptops

Test

Synthetic users go through it. You fix what they stumble on and plan the first customer test.

Reading synthetic-user test findings together

Pitch

Three minutes each at your table, with questions, then selected demos for the room. We close at 17:00.

Product Build Day ProBerlin

Bring a tested idea to your next review.

Request your seat for 26 November, or ask for what your manager needs to approve it. Replies in 24h.

€690net per person until 31 October, €790 after
invoiced to your company

Request a seat

Number of seats
Where are you with approval? (optional)

For your training budget

Need your manager’s yes first?

Your manager needs three things: what it costs, what the company gets back, and a document for procurement. All three are here.

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 net per person until 31 October, €790 net after
Company invoice. VAT shown separately where German rules require it
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.

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.

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.

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?

The invoice goes to your company: €690 net per seat until 31 October, €790 net after that, VAT shown separately where German rules require it. Pay by card or by bank transfer against a pro forma.

Can I request a seat while I wait for approval?

Yes. Pick "I need employer approval" in the form. You get the venue, the invoice total and the cancellation terms to take to your manager. Nothing is charged at that point.

26 November · Berlin€690 net until 31 October · Company invoice

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Marcin got your request and replies within 24 hours.

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