On-Call Senior Systems Administrator | AD/Exchange/VMware

Helion Technologies is seeking a Systems Administrator to support complex desktop and server issues with deep expertise in Active Directory, DNS, DHCP, and Group Policy to keep the service desk running smoothly. You will assist outsourced field personnel at client sites, monitor alerts in PRTG, manage Exchange/365 mail flow, VPN, printers, and virtualization, and participate in Saturday on-call rotations while coordinating with project and account teams.