Hello,
I am able to start on your project as soon as possible. I have understood your requirements correctly and I've been working on similar projects which consist in the creation of scripts that connect to SharePoint for the creation of items, manage permissions, etc.
I have more than 6 years of experience in SharePoint (both Online and OnPremise) and in the development of custom web parts and extensions using SharePoint Framework with React. During all of these years I had to develop scripts for multiple purposes, some examples are: Provision a SharePoint site (upload files, modify web pages, create items, modify permissions, etc), migrate data from excel to SPO, etc.
I can make your project using Powershell or C#, using a library such as PnP to connect to the site.
I can be the perfect candidate because I like to do my work well, on a short time basis and with the best communication possible.