Constraints to Fix First
- β’Prove founder-market fit with concrete customer pain.
- β’Show 12-18 months runway plan before outreach.
- β’Keep a focused deck: problem, traction, why-now.
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Startup resources for founders
Build a business
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Tools, essays, and frameworks for founders building in Europe. From unit economics to raising your first million β the things I wish someone had told me.
Lech Kaniuk is a Polish-Swedish serial entrepreneur who has founded 10+ companies including PizzaPortal (acquired by Delivery Hero) and SunRoof. An angel investor in 40+ startups, he is the author of three books on startup fundraising and unit economics.
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- STATUS AVAILABLE Β· Warsaw, PL
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LTV:CAC ratio calculator. Input your unit economics β get an instant verdict on whether your business model works.
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Fundraise Readiness Check
10 questions. 3 minutes. An honest score on whether you're ready to pitch investors β and what to fix first.
Pitch Seed Series A Due diligence
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Read the important parts first.
#029 European Ecosystem
The European Founder's Guide to Fundraising
The US playbook does not transplant. Here is what actually works in European fundraising.
10 min
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#028 European Ecosystem
Building a Startup in Poland vs Silicon Valley
Not a complaint β a strategic map. The differences that change what playbook you should use.
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#025 Investing
What I Look For Before Writing a Check
The actual criteria. Not the polished version I give at panels.
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Book PL
AnioΕ w Piekle
The first Polish book written from an angel investor's perspective. Everything I learned investing in 40+ startups.
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AnioΕ w Piekle
Chapter 1 β Dlaczego anioΕy ginΔ w piekle
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Chapter 2 β Po co ci biznes
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