Finally: A Product Community for people like you

Get 10 CPOs in your pocket

by joining the

PRODUCT MASTERY GUILD

a living and moderated community of only SENIOR product leaders, who want the exact right dose of input

Learn what makes this different:

CRAZY DEC DEAL

€29/month (!!) for the next 24 product leaders who join before 2026.

“Wait… you too?”

Maybe you ever wondered: Am I the only one that bounces from having too little to too much external information? 

You. Are. Not.
There are MANY experienced people like you, and you’d be surprised how many are willing to share.

But whenever groups were created before, one of two things happened:
Either it reaches critical mass, and in no time is populated by start-up founders and junior people. You then need to work hard to find gems among all the mud. And even if those people are kicked, when it works, you end up with a group where people chat SO MUCH you can never keep up. 

Or… There are too few people there. And it dies a silent death. 

In the past years I’ve been priviliged to work with groups where we tackled subjects like:

  • Effective product strategy
  • Better communication
  • Coping with a commercial CEO
  • Improving Product Managers
  • Making Discovery better

and much MUCH more. 

We were able to do this because we had experienced leaders in the room, who agreed to confidentiality. 

I had three years to figure out the right size. In person? It’s 7. Remote it sits around 10. 

So that’s EXACTLY what we’re implementing in this community. You get matched to a group of product leaders. 

This is your ‘Circle’. With them, you can go deep on any topic. 

And we are there to help. If interaction dies down, we throw you a prompt to talk about. Because after working with 200+ product leaders, I know what will get you guys going.

Sound great, right?

Honestly, I made this partly because I wanted it, and hope to see you there.

Martijn Versteeg

Who is Martijn Versteeg?

In the past years, I’ve worked with 200+ product & tech leaders across Berlin, Amsterdam & London. I’ve run groups, events, off-sites and training.  My focus will be to ensure you get a guaranteed result. With the weekly general message’s I will share one usefull tool/insight I found, and two that were discussed in groups (anonymized obviously)

Here’s what I guarantee: If you show up and give this group a few reads, you will walk away with 10 times the value ánd potentially 40 new business friends. 

Any input, contribution, or question is always welcome, feel free to send me a message, LI below.

Meet some of the participants

ˆOver 200 years of product leadership experience working in 5 countries(!)

As you can see, we attract really cool people.  Imagine how refreshing, real, and practical things get when you get to work with people like this. 

I vetted everyone, and they are AWESOME

Topics/Sessions

Now of course the subjects in your circle will be determined by you and your peers, but I can give you a clue on what we have lined up for you:

🧠 Tips to create more effective product strategy
⚖️ Measuring results (also in B2B products!)
🔧 Balancing tech needs with product needs
🗣 Storytelling Tactics
🧍 Growing your PMs
🧘‍♂️ Preventing burnout and bore-out in your team
😤 Handling the Jerk in your company
⚡️ Best practices for AI in Product Management
💬 Aligning with your leadership team
📈 Business Sense for Product Leaders

Join now!*

*After this, your seat is reserved. I hold the right to reject you if you do not meet the criteria, in which case you get a full refund.

Tech Mastery Unconference General Admission

Product Mastery Guild

You will be redirected to groupeffort.nl
29 /month (paid yearly)
  • Confidential group with +-10 peers
  • Access to the secret group where I share the best insights cross community
  • Practical and authentic insights
  • Value adding surprises throughout the year
Popular

Product Mastery Guild

You will be redirected to groupeffort.nl
49 /month (paid monthly)
  • Confidential group with +-10 peers
  • Practical and authentic insights
  • Value adding surprises throughout the year

More info, but prefer video? Then this is for you:

For who?

European CPOs, VPs, Directors, and Heads of Product. My criterea are that:
1. Have an active role in leading product, 

2. This is not your first ‘rodeo’

3. Your company has 30+ people at bare minimum.

Exact details may differ, because I go for quality. 

Testimonials of my last event:

Two notes on size

There's already 70 people in

Don't mistake this being new to you for this still needing to get off the ground. 70 vetted product leaders that I actually know are already in. I don't need this, but I do want to give it. 🙂 The money is so we know you are serious, can do moderation, and invest in the community throughout the year.

100 people MAX

Communities are nothing like tech companies. With communities it is all about quality. I'm not 'scaling like crazy', I'm giving this the attention it deserves. Just limited seats, so don't wait around.