Senior Systems Administrator – IT Infrastructure & Cloud

Path Mentors Staffing Solutions; Toronto; On-site; CAD 80,000 - 110,000; Full time

Job summary

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).

Qualifications

• 7+ years of hands-on IT support, design, and implementation experience.
• Proficiency with Windows Server and Windows Desktop.
• Active Directory, Exchange Server, O365, replication technologies.
• Hands-on with VMWare and Hyper-V.
• Experience with firewalls – Cisco, Fortigate, SonicWall etc.
• Understanding of TCP/IP, DNS, DHCP, and networking fundamentals.
• Previous experience providing remote support is a definite asset.
• Linux system administration skills with Centos, Debian, Redhat, Ubuntu, etc.

Skills

Windows Server

Active Directory

Exchange Server

VMware

Hyper-V

Networking

DNS DHCP

Firewall knowledge

Remote support

Linux administration

Job description

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).