About z3x
z3x is a consulting and technology group that helps businesses turn complex ideas into real, scalable solutions. We work at the intersection of strategy, innovation, and software - with a strong focus on FinTech, automation, and digital growth.
15+
years of experience
10+
countries we work with
83
NPS from our customers




Who We Are
We’re a team of thinkers, builders, and operators who believe that good strategy and good execution should go hand in hand. We work closely with founders, product teams, and decision-makers to help turn ideas into working solutions - whether it's a new FinTech product, a digital platform, or a complex automation process.
We've helped startups launch fast, supported scaleups in reaching the next level, and guided traditional businesses through digital transformation. Always with the same approach: clear thinking, practical strategy, and hands-on support.
We come from different backgrounds - finance, technology, design, marketing - but we're united by one thing: we care about making things that work. That means asking the right questions, challenging assumptions, and staying close to our clients throughout the process.
We're based in Europe, but we work globally. Flexible, remote-first, and connected - not just by tools, but by how we think.
See how we've helped our clients grow, launch, and transform - one project at a time. Explore our case studies and discover how strategy, tech, and execution come together at z3x.
Our Leadership

Karol Zielinski
Co-Founder & CEO

Jakub Smeda
Co-Founder & COO