NFT Backend Image and Meta Data Server Setup

We currently have all the ART work for our NFT project but are having problems with the backend to call upon the items that we want to hold for marketing purposes. All of our collection was generated and uploaded to Pinata but we are being told we should create our own server on the backend and add our images and meta data there. From there we use an API in the smart contract to change the image allocation to the tokens before the reveal.

This is an URGENT request and we will HIRE SOMEONE today.