IT Infrastructure Lead — Ops, Cloud & Security

Cognizant; Mississauga; On-site; CAD 64,000 - 75,000; Full time

Job summary

Cognizant is seeking an IT Infrastructure Support Lead to drive day-to-day operations across EUC, servers, AD, Microsoft 365, and networking. You will coordinate with vendors, lead incident response, and ensure high availability for business-critical systems in Mississauga, onsite five days a week.

The role emphasizes leadership, vendor management, and participation in DR/BCP planning while guiding teams through complex change and projects.

Qualifications

• Must have strong IT infrastructure management experience across servers, storage, network, cloud and end-user computing.
• Proven ability to lead incident resolution, drive improvements and ensure high availability.
• Experience with ITIL processes and governance.

Responsibilities

• Lead daily IT infrastructure operations across server, storage, network, cloud, end-user computing, collaboration platforms, and security services.
• Ensure availability, reliability, and performance of critical infrastructure components.
• Manage infrastructure support activities to meet SLAs and operational KPIs.
• Coordinate support across multiple technology towers and service providers.
• Provide leadership during critical incidents and major outage situations.
• Oversee desktop, laptop, mobile device, printer, and collaboration tool support operations.
• Lead deployment, patching, imaging, software distribution, and asset lifecycle management activities.
• Manage support for Microsoft 365, Teams, Outlook, OneDrive, and SharePoint environments.
• Support the development and testing of Disaster Recovery (DR) and Business Continuity Plans (BCP).
• Oversee Windows and Linux server environments.
• Coordinate server provisioning, patch management, upgrades, and decommissioning activities.
• Manage Active Directory, Group Policy, DNS, DHCP, and identity management services.
• Ensure infrastructure is maintained according to security and compliance requirements.
• Support LAN, WAN, Wi‑Fi, VPN, firewalls, load balancers, and network security devices.
• Manage datacenter operations, including racks, cabling, power, environmental monitoring, and equipment installations.
• Lead Incident, Problem, Change, and Request Management processes.
• Drive root cause analysis and corrective action planning.
• Participate in CAB (Change Advisory Board) reviews.
• Develop and maintain service reports, dashboards, and executive status updates.
• Ensure compliance with ITIL best practices.
• Lead infrastructure support engineers and onsite support teams.
• Provide technical guidance, mentoring, and performance coaching.
• Manage resource planning, workload balancing, and skill development.
• Support recruitment, onboarding, and training of infrastructure personnel.
• Manage relationships with infrastructure vendors and service providers.
• Coordinate hardware procurement and service delivery activities.
• Coordinate infrastructure recovery exercises.

Skills

Windows Server Administration

Active Directory & Group Policy

DNS, DHCP, TCP/IP Networking

Microsoft 365 Administration

Azure Active Directory (Entra ID)

VMware / Hyper‑V

Storage & Backup Technologies

Tools

SCCM / MECM

Microsoft Intune

JAMF

Windows 10/11 Administration

Device Lifecycle Management

ServiceNow

Job description

Cognizant is seeking an IT Infrastructure Support Lead to drive day-to-day operations across EUC, servers, AD, Microsoft 365, and networking. You will coordinate with vendors, lead incident response, and ensure high availability for business-critical systems in Mississauga, onsite five days a week.

The role emphasizes leadership, vendor management, and participation in DR/BCP planning while guiding teams through complex change and projects.