What I did:
Expanded the engineer’s resource reporting logic. When resolving a ticket, engineers are now required to input the exact hours spent and the cost of replacement parts. Built a financial calculation module on the backend that automatically aggregates these costs, applies the Czech 21% VAT (DPH), and displays a detailed invoice summary to admins and clients.

Also implemented a critical backup request feature: engineers can now submit a “Request Backup” flag along with a specific text reason if they encounter blocking issues on-site. Admins immediately see an approval panel to either accept the request (and assign additional help) or reject it.

The struggles:
I had no idea for frontend