IT System Administrator to manage Windows and Linux infrastructure using VMware, Hyper-V, Active Directory, Entra ID, and cloud administration platforms

Our client is seeking a IT System Administrator (10+ years) to manage Windows and Linux infrastructure using VMware, Hyper-V, Active Directory, Entra ID, and cloud administration platforms

Join a Networks and Infrastructure team supporting enterprise server, network, cloud, and security operations. This role manages Windows and Linux environments, cloud platforms, backup and disaster recovery processes, monitoring tools, and Tier 2/Tier 3 escalations. The position also supports automation, reporting, documentation, and vendor and licence management activities.

6 month contract, 5 days per week onsite in Etobicoke

Must Haves

- 10+ years administering Windows and Linux servers in physical and virtual environments
- Administration of VMware, Hyper-V, Active Directory, Entra ID, Group Policy, and MFA
- Administration of LAN/WAN, DNS, DHCP, VPN, firewalls, switches, and Wi‑Fi infrastructure
- Administration of Microsoft 365, Azure, AWS, or Google Workspace environments
- Experience with Power BI and Crystal Reports

Nice to Have

- ERP experience
- Manufacturing experience

Responsibilities

- Server management: Install, configure and maintain Windows and Linux servers, both physical and virtual (VMware, Hyper‑V).
- User and access management: Manage Active Directory or Entra ID accounts, groups, permissions, Group Policy and MFA.
- Network administration: Look after LAN/WAN, DNS, DHCP, VPN, firewalls, switches and Wi‑Fi.
- Cloud administration: Manage Microsoft 365, Azure,



AWS or Google Workspace tenants and resources.
- Monitoring and performance: Watch system health, uptime and capacity with tools such as Zabbix, Nagios, PRTG or Datadog.
- Backup and disaster recovery: Run backups (Veeam, Acronis or similar), test restores and maintain DR and business continuity plans.
- Security: Apply patches and updates, manage antivirus/EDR, harden systems, review logs and respond to incidents.
- Troubleshooting and support: Handle Tier 2 and Tier 3 escalations for hardware, software and network issues.
- Automation: Script routine tasks in PowerShell, Bash or Python.
- Documentation: Keep system configurations, procedures, network diagrams and asset inventory up to date.
- Vendor and licence management: Work with vendors, track licences and support hardware and software procurement.

Our client is seeking a IT System Administrator (10+ years) to manage Windows and Linux infrastructure using VMware, Hyper‑V, Active Directory, Entra ID, and cloud administration platforms

Join a Networks and Infrastructure team supporting enterprise server, network, cloud, and security operations. This role manages Windows and Linux environments, cloud platforms, backup and disaster recovery processes, monitoring tools, and Tier 2/Tier 3 escalations.



The position also supports automation, reporting, documentation, and vendor and licence management activities.

6 month contract, 5 days per week onsite in Etobicoke

Must Haves

- 10+ years administering Windows and Linux servers in physical and virtual environments
- Administration of VMware, Hyper‑V, Active Directory, Entra ID, Group Policy, and MFA
- Administration of LAN/WAN, DNS, DHCP, VPN, firewalls, switches, and Wi‑Fi infrastructure
- Administration of Microsoft 365, Azure, AWS, or Google Workspace environments
- Experience with Power BI and Crystal Reports

Nice to Have

- ERP experience
- Manufacturing experience

Responsibilities

- Server management: Install, configure and maintain Windows and Linux servers, both physical and virtual (VMware, Hyper‑V).
- User and access management: Manage Active Directory or Entra ID accounts, groups, permissions, Group Policy and MFA.
- Network administration: Look after LAN/WAN, DNS, DHCP, VPN, firewalls, switches and Wi‑Fi.
- Cloud administration: Manage Microsoft 365, Azure, AWS or Google Workspace tenants and resources.
- Monitoring and performance: Watch system health, uptime and capacity with tools such as Zabbix, Nagios, PRTG or Datadog.
- Backup and disaster recovery: Run backups (Veeam, Acronis or similar), test restores and maintain DR and business continuity plans.
- Security: Apply patches and updates, manage antivirus/EDR, harden systems, review logs and respond to incidents.
- Troubleshooting and support: Handle Tier 2 and Tier 3 escalations for hardwa

📌 IT System Administrator to manage Windows and Linux infrastructure using VMware, Hyper-V, Active Directory, Entra ID, and cloud administration platforms (Toronto)
🏢 S.I. Systems
📍 Toronto