IT/OT Senior Systems Administrator
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Join a Global Leader. Help Build the Future of IT/OT Infrastructure.
Our client is a Canadian company with a global presence and a growing technology team. As their operations continue to expand, they are looking for an experiencedIT/OT SeniorSystems Administrator to play a key role in supporting, securing, and modernizing their technology infrastructure.
This is an opportunity to join a dynamic, collaborative environment where your expertise will directly contribute to the reliability, security, and evolution of critical IT and OT systems.
The Opportunity
You will design, administer, optimize, and support a hybrid on-premises and cloud environment, ensuring a highly available, secure infrastructure across corporate and operational sites.
Key areas of responsibility include:
- Manage Windows Server, Active Directory, Microsoft Entra ID, Microsoft 365 and Azure environments.
- Administer and optimize VMware and Hyper‑V virtualization , including servers, storage, and capacity planning.
- Support enterprise networking, DNS, DHCP, VPN, VLANs and connectivity .
- Manage backup, disaster recovery, business continuity and infrastructure monitoring .
- Support Exchange, SQL Server, Intune and enterprise applications .
- Implement patching, vulnerability remediation, security baselines and identity/access controls .
- Provide Tier‑3 technical support and lead complex infrastructure troubleshooting.
- Partner with internal teams, vendors and managed service providers to deliver reliable technology solutions.
- Contribute to cloud adoption, infrastructure modernization and automation initiatives .
- Provide occasional onsite support at corporate and operational locations.
What You Bring
- 5+ years of enterprise systems administration or infrastructure experience.
- Strong hands‑on expertise with Windows Server, Active Directory, Entra ID, VMware/Hyper‑V and Microsoft 365 .
- Experience with Azure, virtualization, storage, backup and disaster recovery .
- Solid networking knowledge across TCP/IP, DNS, DHCP, VLANs, routing, switching and VPNs .
- Strong PowerShell scripting and automation skills.
- Excellent troubleshooting, communication and problem‑solving abilities.
- A collaborative, ownership‑driven approach and the ability to work across both IT and OT environments .
Assets: Linux administration, OT/HMI environments, Palo Alto, Cisco or HPE/Aruba technologies, and relevant Microsoft, VMware or Veeam certifications.
Why Join?
- Join a Canadian global leader with continued growth and investment in technology.
- Be part of a dynamic team working at the intersection of IT, OT, cloud and cybersecurity.
- Make a direct impact on critical infrastructure and operational excellence.
- Opportunity to contribute to modernization and transformation initiatives, not just day‑to‑day administration.
- Work alongside talented professionals in a collaborative and evolving environment.
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