JelllybeanLabsGermanCardCrew
About us | The vision behind JelllyBill
Welcome to JelllybeanLabs, the developer team behind JelllyBill.
Our mission is to make the admin side of selling noticeably easier for serious Cardmarket sellers and everyone on their way there.
Built from real use
JelllyBill did not start on a whiteboard. It grew out of day-to-day selling. We ran into the same time-consuming bookkeeping and invoicing pain points that come with trading on Cardmarket. Far away from big tech hubs, in our small home village, we made a simple decision: if no software solved our admin problems properly, we would build it ourselves for us and for the Cardmarket community.
Our solution: JelllyBill
From that need, JelllyBill was born. We set out to build a system that automates complex workflows while staying easy to use. Today, JelllyBill is a thoughtful invoice tool tailored specifically to Cardmarket sellers.
Our software offers you:
Professional invoicing
Create legally compliant, customisable invoices for your customers in no time.
Transparent financial overview
Keep an exact overview of your sales, revenue, and business growth at all times.
Maximum efficiency
Reduce administrative work to a minimum so you can invest your time in growing your core business.
The team behind the software

Roman Solodkov
JelllybeanLabs

Tanyel Usludur
GermanCardCrew
Behind JelllybeanLabs are founders Roman Solodkov and Tanyel Usludur. How deep our roots in the community go shows in the fact that Tanyel Usludur is also the founder of GermanCardCrew and still an active seller on Cardmarket today. We know the business and sellers' needs inside and out.
Our shared goal is to build a solution that stands out through technical reliability and solves the problems that make your selling day harder. We want JelllyBill to help you run your Cardmarket business with less admin overhead and more confidence.