Hello, i am Andrey.
For 5 years i have developed many different(complexity, time period) accounting systems like CRM, ERP, custom system for input, store data. Many of these projects have ability to generate reports (xlsx, docx, pdf formats).
I noticed your project about 10 minutes ago and decieded to respond it.
My solutions is following: Yii 2 framework + MySQL + AdminLTE(as desing of UI). First of all i suggest to discuss specification of functionality (thechnical requirements) for estimate.
I am ready to start as soon as possible. I have GMT+3 timezone, so i will be active in about 9 hours.
Thanks.