Who We Are

Canada Guaranty is a privately held Canadian mortgage insurer, established in 2010 following the acquisition of AIG United Guaranty Mortgage Insurance Company Canada by the Ontario Teachers’ Pension Plan and National Mortgage Guaranty Holdings Inc.

As a proudly Canadian company, we are committed to service excellence and helping Canadians achieve successful, long-term homeownership. Our mortgage solutions help protect lenders and investors from losses related to borrower default and foreclosure while ensuring Canadians are provided with greater access to affordable and sustainable homeownership.

Canada Guaranty’s performance‑driven culture thrives on accountability, collaboration, and supportive teamwork. If you’re a dedicated team player with a strong track record of excellence, we can’t wait to hear from you

About The Chance

The IT Systems Administrator is responsible for the daily administration, maintenance, security and reliability of Canada Guaranty’s Linux and Windows server environments and the infrastructure supporting critical business applications. The role provides hands‑on systems support, monitoring, patching, troubleshooting, backup and recovery coordination, and basic network troubleshooting across on‑premises and virtualized environments. The administrator works with the infrastructure team and service providers to maintain availability, performance, documentation and compliance with established IT controls.

In This Role, You Will

- Install, configure, administer and maintain Linux servers (such as Red Hat Enterprise Linux and other enterprise distributions) and Microsoft Windows Server systems.
- Administer core Windows services, including Active Directory, Group Policy, DNS and DHCP,



as applicable to assigned systems.
- Perform operating system patching, upgrades, hardening, vulnerability remediation, certificate renewals and routine maintenance in line with change‑management requirements.
- Monitor server health, performance, capacity, logs and system alerts; investigate and resolve incidents and recurring issues.
- Use Linux command‑line utilities, Bash/PowerShell scripting and automation to streamline routine administration and support activities.
- Support VMware/ HPE‑VME virtual machines, virtualization operations and associated compute/storage infrastructure.
- Demonstrate working knowledge of TCP/IP, IP addressing, subnetting, VLANs, routing concepts, DNS, DHCP, NAT and common network ports/protocols.
- Troubleshoot basic server‑to‑server and user‑to‑service connectivity using tools such as ping, traceroute, nslookup/dig, netstat/ss and packet captures when appropriate.
- Coordinate network changes with designated network engineers; advanced firewall, switching and routing design remains outside the primary scope of this role.
- Apply security baselines, least privilege access, configuration standards and timely remediation of identified risks.
- Support audit evidence requests, internal controls and security/compliance reviews in a regulated environment.
- Work collaboratively with IT colleagues, application teams,



vendors and business stakeholders to resolve service issues.

Essential Qualifications

Availability outside regular business hours, when scheduled or required, to support planned system changes, patching and deployments, and availability to assist with critical production incidents and recovery activities outside regular business hours, in accordance with team escalation arrangements, is an essential requirement of this role.

- College Diploma or University Degree in a related field.
- At least 2 years of hands‑on experience in systems administration, including practical administration of both Linux and Windows Server environments.
- Ability to troubleshoot Linux and Windows operating systems, services, logs, permissions, patching and performance issues.
- Working experience with Active Directory and common Windows infrastructure services.
- Working knowledge of virtualization technologies, such as VMware/ HPE‑VME.
- Fundamental networking knowledge and ability to diagnose common TCP/IP, DNS, routing and firewall‑connectivity issues; advanced network engineering expertise is not required.
- Familiarity with infrastructure monitoring, backups, access controls, operational documentation and change‑management practices.
- Experience using command‑line administration tools and basic Bash and/or PowerShell scripting.
- Takes ownership of technical issues and follows them through to resolution.
- Understands the importance of confidentiality, integrity and availability for sensitive business systems.
- Communicates clearly with technical colleagues, vendors and non‑technical users.
- Demonstrates a customer‑service

📌 IT Systems Administrator (Toronto)
🏢 Canada Guaranty
📍 Toronto