Below are the required skillsets. 

Microsoft Windows, Servers

Azure Stack Hub

Hyper V Clusters

IBM Storage Cluster

Pure Storage Cluster

VxRail

Azure Cloud

 (Services Management, Provisioning & Decommissioning)

-Entra ID

-Subscriptions

-Networks

-Storage accounts

-VMs

-Azure ARC

-Azure Intune

Hyper V

PRTG

-Infrastructure monitoring

-Cluster updates

-Probes issues fixes

-Servers sensors fixes

-Adding/removing sensors

-Performing PRTG cluster updates