In build Build
FlagRoster
5v5 flag football, team & roster management
Team management for a sport we play. Our current build; first paying teams are the month-six gate.
Portfolio
Small, real, and counted.
Each asset is listed with one number we can defend, the arm it belongs to, and where it sits in the loop. The first Back cohort will join FOUND, elyps and UX Pilot here once the programme completes.
Build · ventures we started and run
In testing Build
PMFTracker
T hypothesis under test with PMF Programme cohorts
The product version of the PMF programme ProductTrio runs. Promoted to build only when the hypothesis lands.
Operating Build
BoiskaWPolsce.pl
19,000+ sports pitches across Poland
Live, local, transactional-intent data. Being moved from display ads to bookings, listings and partnerships.
Operating Build
PsiSpacer.pl
12,000+ dog-friendly places in Poland
A directory that becomes uncopyable through reviews, photos and a dog-owner community. Roti, the dog, approves.
Operating Build
CastlesToVisit.com
65,000 castles in 47 countries
Being rebuilt from a list into a trip-planning tool: routes, opening data, tickets — the parts an AI answer cannot give you.
Buy · businesses we have acquired
Nothing bought yet. We are looking at Polish directories, niche sites and micro-SaaS with real revenue. If you are selling one, tell us.
Back · founders we work with
Before Roti Back
FOUND
0 → PMF in 30 months, from idea
Swiss hiring marketplace. Fractional Head of Product 2022–2023: a beachhead of ~500 product leaders, 50+ interviews, 30+ experiments, a no-code MVP on WhatsApp. 1,000 B2C users and 60 B2B customers in year one.
Before Roti Back
elyps
−30% onboarding dropout on a compliance-heavy KYC flow
French-Belgian mobile neobank. Head of Product 2019–2021, leading a team of nine from zero to launch; the redesigned five-step KYC flow helped earn FCA e-money agent accreditation.
Before Roti Back
UX Pilot
+50% MRR, from $300K to $450K+
Bootstrapped AI design tool, 500K to 1M+ users. Head of Product 2025–2026 and first product hire, taking the product over from the founder at $300K MRR. Switching one feature on by default, tested on 120,000 users, lifted free-to-paid conversion 44.7%.
Olek worked on all three before Roti existed — as Head of Product, not an investor: FOUND and elyps from zero, UX Pilot from $300K MRR onward. Roti holds no stake in any of them. They are listed here because it is the same work the Back programme does today. The first cohort starts in Q1 2027 — if you have a shipped product, apply here.