Hi! We’re here to help you.

About us

About us

We are a boutique full-service company specializing in the FinTech and marketplace industries. We help build products that change the world of commerce and finance around the world.


Go-to-market strategy, business strategy, IT, marketing, payments strategy.


From strategy, to execution. Digital marketing activities dedicated to the FinTech and marketplace industry.


Consulting and implementation. From national and international regulations to industry standards and recommendations.

Software development

From simple tools to huge distributed trading systems. Design, development, deployment.

That’s how much our clients processed on the projects in which we participated
In so many countries our clients sell their services and products
Our clients run their businesses from so many countries
Karol Zielinski


Zielinski&co is a boutique full-service company specializing in the FinTech and marketplace industries. We help build products and companies. We operate in various areas. From idea, through strategy, planning, to the execution. We like challenges and we face them on a daily basis together with our clients.

Founded in 2019 by Karol Zielinski.


Who is Karol Zielinski?

Entrepreneur, manager. New technologies enthusiast. Founder, co-founder, shareholder of several companies and creator of numerous business-related projects. On a daily basis, he builds businesses himself, invests or, as a c-level manager, supports companies created by other great people. Currently, he is operationally involved primarily as CEO in two animal projects: Deor and Stipl and in the Zielinski & cocompany.

Previously associated with the FinTech industry, mainly through PayLane Sp. z o.o. President of the management board continuously from 2012 to 2021. Previously, at PayLane, he was a project manager and, from 2011, a managing director. In 2018, he led to the acquisition of a strategic investor for the company and the sale of 100% shares to CRE Polskie ePłatności SA. In 2020, he participated in the largest M&A transaction in the history of the payment market in Poland – in the sale of the Polskie ePłatności capital group to the Danish Nets group.

He also participates in the development of other business projects and supports entrepreneurs on their way to the top. He is actively involved in the world of VC funds, where he tries to help in the selection of portfolio companies and investment portfolio management.

In the meantime, the founder and president of the Ene Due foundation and the originator of the #dladzieciakow charity campaign.

A graduate of the International Executive MBA at the Gdańsk Manager Development Foundation, the University of Gdańsk and the Rotterdam School of Management. A graduate of computer science at the Gdańsk University of Technology and postgraduate studies at the Higher School of Administration and Business in Gdynia.

Expert and panellist at Polish and international conferences on running a business, mainly technology business. A mentor in startup accelerators, sits on the jury of various competitions for startup founders.

Do you need more information about Karol Zielinski? Here you will find more information.