We have a website that allows users to upload their files just like word, excel, PowerPoint ... etc. currently our users can not edit their files through the website, in order to edit a file they need to download the file and make necessary correctness then upload the file once again. we are going to build integration with office 365 thus we need to work with a developer who has experience in this integration work. please read the following:
Documentation for Microsoft office online, web application open platform (WOPI)
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You can also suggest any other platform like google sheets, LibreOffice. We will discuss and if it's suitable then we can work on that.
In summary, we need the following features
1. View document (word, excel, PowerPoint) with office 365 with an iframe
2. Have the edit option and only office 365 licensed users can edit the files.
3. After the edit, we should get the updated file. We will store the latest updated audit file.
These are the basic requirements, we can discuss in details.