Hi, I’m Mariusz, a Senior Product Designer and Team Lead with 14 years of experience designing platforms for millions of users across marketplaces, fintech, and SaaS. I turn complex business requirements into intuitive product experiences, lead full discovery-to-delivery cycles, and leverage AI to cut validation time from weeks to days.

Research-backed decisions. Data-informed iterations.

Approach

Great products are built on smart trade-offs, not idealism. Finding the right balance between user friction, technical constraints, and time-to-market is what allows for fast, reliable hypothesis testing. I combine qualitative and quantitative data to de-risk decisions early. Whether optimizing a high-friction touchpoint or architecting a system, I deliver targeted solutions that fit the broader business strategy.

About me

I’ve been lucky enough to work with amazing clients, such as…

Booksy
Renault
Hot Wheels
Citi
Tikkurila
Oxpo
Kewpie
Santander
i-vest +alpian
Care4pet

Ideas, made real.

Explore case studies

Say hello

Drop a message mariusz.karluk@gmail.com or visit my Linkedin

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