Stop going on founder side quests
A structured and focused approach to PMF. Weekly check-ins and a systematic GTM. Frameworks backed by my own PhD research.
Stop going on founder side quests
A structured and focused approach to PMF. Weekly check-ins and a systematic GTM. Frameworks backed by my own PhD research.
Founders I work with got in
Market Fit Sprint
Structure, focus, and increasing momentum
2 hour Market Fit Diagnosis
PMF & GTM evaluation + game plan
Finding the market to grow in
Clarity on the right market to grow in
Find a GTM motion that works
Iteratively we find what works for you
4 weekly mentoring calls
Process learnings and sanity check priorities
Unlimited DMs
You can email me or WhatsApp me unlimited questions throughout the week
Any startup
As long as it's early-stage
Software, AI, Hardware, Marketplaces
As long as it is techy
B2B, B2C or B2G
Yes, even those pesky governments
Worldwide
Worked with founders from the Americas, Europe, and Asia
Pricing
Hit the toggle to see different rates. Check if you qualify for discount (link).
Market Fit Diagnosis
Critical review of your current strategy
€1550
total
€750
total
Two-hour interactive session
Prep: I review your strategy (2 hours)
You get:
Evaluation of your current PMF
Priorities & blind spots in GTM
Sharper segment focus
Clear next steps to move the needle
1 year access to Substack (worth €50)
Mentoring Subscription
Weekly or biweekly check-ins
€950
per month
€550
per month
Only available after Diagnosis
2 hours per month
30 minutes weekly or 1 hour bi-weekly
Unlimited DMs during the week, usually answered within 4 hours
You get:
Troubleshoot ad hoc issues
Stay on track to PMF
Accountability on GTM motions
AI summaries of mentoring calls
Market Fit Sprint
Four high energy weeks to find focus and increase momentum
€1850
per sprint
€950
per sprint
Save over 25% vs. buying seperately
Everything in the Diagnosis
One month of Mentoring
More testimonials 🚀
Unstuck from zero customers to one hundred
"After working for months on my innovative bike lock, Jeroen helped me to focus on getting my product to market. He held me accountable to doing things that move the needle, and see through the noise. At the end of my collab with Jeroen, I reached 100+ sales, and felt comfortable to continue by myself. With a philosophical tangent here and there, he's helped me to get unstuck and ahead as a founder"
Charlie
Scoot Boot - Chicago
Bike Lock with 120db alarm
Focus, accountability, and momentum
"You can easily convince yourself a side quest is worth it. Jeroen asks the tough questions to keep your eyes on the prize. He drives velocity through weekly accountability and focusing on the right things. It keeps you away from distractions."
Yasir
AI Recruiting platform
Additional brain
"Jeroen is an additional brain. Someone who shares your ambitions, has relevant experience and knowledge, and can provide support at a deeply personal level. Sanity checks when you need them."
Julia
Remote work platform
Validate my direction
"Jeroen is my sounding board for strategic decisions. Our calls help me validate my direction, sharpen my ideas, and identify the next improvements. It keeps me moving forward with confidence."
Menno
Noa - The Netherlands
Intelligent voice for recruiting
Now doing sales calls confidently
"I needed a structured approach to scale my sales calls and tactics for smoother conversations. With Jeroen’s input, I walked into those meetings feeling more confident than ever."
Philipp
Enterprise hardware management SaaS
Actionable advice with relevant examples
10/10 would recommend. Jeroen helped me get better focus on what's the most important priority. Asks the right questions to dive deep and gives very actionable advice with real examples based on the many startups he worked with.
Jayson
Agentic AI for insurance
Sanity checks and action points
Jeroen is the best! Helpful insights and sanity checks. Walked away with action points we are excited to execute on. Would recommend for any founder.
Eric
Ailixr - Hong Kong
Educational AI platform
Learn to think like a startup
"By working with Jeroen, I've learned how to turn big ideas into small experiments. This increased momentum and focus for our startup. We now know what works, without spending 6 months of building it."
Caroline
DuoLingo for wine
Mindset shift to the customer
"He helped me to shift my mind away from what I offer to focus on the customer. From supply to demand. This has helped me to sharpen my value proposition immensely"
Dylan
Self-development programs for adults
Hard and honest feedback
"Jeroen doesn't beat around the bush. He highlighted what customer information I missed in a direct way, I immediately knew where to focus. That's the kind of feedback I prefer to hear, cold and early."
Javier
Investment intelligence platform
Get a first free consult
Get to know, vibe check, and some free tactics
Missing anything? Send me an email!
Did you ever have a startup?
Yes, two, and made many mistakes. One never exited the business plan writing phase. The other we built for 1.5 years and then launched, got 1500 downloads, and usage flatlined. We built something people didn't want.
Who gets a discount?
Startups that don't have a lot of resources. These are bootstrapped startups, startups without fundraising (angel, VC, or grant), and pre-revenue startups. I define pre-revenue as <€1000 MRR.
What is your PhD on? Can I read some?
Early-stage startups. I see startups as a design object. I'm investigating how entrepreneurs design successful startups. And nope, our mentoring will not be part of our research—unless we specifically agree to that. My book is finished later this year. I'll post about on my Substack or LinkedIn.
I don't have the resources, do you do equity?
No, I don't. You don't want me on your cap table for three months of work, trust me. Given the early-stage risk, the equity share I require to make it worthwhile to me is not in your favour. You may pay in tranches, and I offer discounts for pre-revenue, bootstrapped startups.
