Senior Systems Administrator – IT Infrastructure & Cloud

Appsonnet in Toronto seeks an experienced IT support professional to design, implement and maintain client IT environments for diverse customers. The role emphasizes hands-on administration, strong customer service, and proactive problem solving across Windows Server, Active Directory, Exchange, and virtualization.

Candidates should have 7+ years hands-on IT support, knowledge of DNS/DHCP, VPN, and firewall devices (Cisco/FortiGate/SonicWall).