I am a moodle administrator working in a university. I have lot of experience configuring, upgrading and maintaining moodle websites. Last week I also did moodle upgrade on freelancer.
I have worked on similar projects to what you are looking for, and I am confident I can exceed your expectations.
Please message me the details of the project.
I am glad to answer any questions you may have!
Thank you for your time,
Malaka