Custom backend for biedunkiewicz.pl

We built a bespoke backend for Gaweł Biedunkiewicz to sell and manage online construction consultations. We connected appointment availability, Przelewy24 payments, Google Calendar, Google Meet, a client portal and a management panel into one process.

At the system’s centre is a booking that connects information about the case, payment, meeting and documents. Consultation handling therefore goes beyond accepting a request and includes preparing both parties for the conversation.

Gaweł sells his time and knowledge. Organising each consultation, however, requires a series of additional activities: establishing availability, confirming payment, preparing the meeting and gathering materials. Leaving these stages outside the system would mean manually connecting information from several tools.

Simply connecting a calendar and a payment gateway did not solve the problem. The appointment needed to reflect Gaweł’s actual availability, confirmed payment needed to relate to the right booking, and the investor’s documentation needed to reach the specific case. Automation was intended to take over repetitive meeting organisation while leaving the expert in control of its course and preparation.

We connected payment with the state of the specific booking. A signed notification from Przelewy24 is used to confirm its status, while handling the calendar event and Google Meet link uses the same context. Individual integrations perform successive parts of one process rather than creating independent entries that require matching later.

Portal access uses a random 256-bit token, and materials are stored outside the server’s public directory. Downloading them from the panel requires an administrator session. The owner receives the booking, payment status, documents and communication for the particular consultation in one place.

Gaweł received his own tool for handling paid consultations, from appointment selection to gathering the materials needed for a substantive conversation. Clients have a defined route for purchasing and preparing their case, while the expert has a panel for overseeing its successive stages.

The main result is connecting sales with service delivery. Booking, payment, calendar and documentation form one case that can be handled without manually reconstructing its history across several independent tools.