I design interfaces where the difference shows in the numbers.

UX & CRO specialist. I work with SaaS products, e-shops and internal systems.

Projects

+18 % Lifting conversions in a SaaS product A data-led redesign of a key screen revenue +18 % · CTR +16 % · CR +12 % +2,05 pp E-shop redesign Unclear discounts and friction in checkout CR +183 % · bounce −59.6 % · tickets −33 % +16 % Improving CTR on a landing page Removing barriers in the first decision step CTR +16.77 % · CR 24.87 → 29.07 % · revenue +14 % 45 min Simplifying an internal system Fewer steps in the daily workflow 45 min / day · −3 clicks · ~15 s / document +46 % Longer play sessions in mobile games A simpler game flow, guided by data session +46 % · ads +230 %

How I work

Data

What the numbers say — and what's being measured wrong.

Where it leaks

The places people drop off, ranked by impact.

The change

A change, with what I expect from it stated up front.

Validation

An A/B test, or the data after launch.

I decide by data, not by gut feelingFewer changes — but measured onesEven a negative result is information

About me

Design people, decided by numbers.

I care about the whole journey — the first impression, the moment of friction, and the decision to say yes. My background is in product and CRO across SaaS, e-commerce and internal tools.

More about me

Tell me what you're solving.

If it's not the right fit for me, I'll say so up front.

Book a call jakub@adupo.sk