Standby IT support for 3 weeks

I am looking for an experienced IT professional who can provide advanced technical support via standby service over a three-week period. My expectation is that the IT support must be available at flexible, as-needed hours, based on the urgency of the IT issue. Furthermore, I require expertise in Microsoft Active Directory, Microsoft 365 and networking to make sure our systems function optimally.

Must be present and able to work in Auckland, New Zealand.