If you are looking to integrate Jira with SharePoint, you can try SharePoint Connector for Jira, which has just been released! I'm not sure exactly what your use case is, but I would suggest you give it a try!
Here there are some of its features:
Easily insert documents located in SharePoint Online and OneDrive into Jira.
End the feeling of confusion & the tedious cycle of downloading, editing, and uploading files.
Connect documents in real time and keep them always updated.
