Infrastructure Lead; Wintel​/Linux

Position: Infrastructure Lead (Wintel / Linux)
Job Role
Infrastructure Lead (Wintel / Linux)

Location
Mississauga, Canada

Overview
We are seeking an experienced Infrastructure Lead to support and evolve a complex enterprise infrastructure spanning on‑premises hybrid clouds and virtualized environments. The role focuses on system stability, security, automation and operational excellence working closely with Infrastructure, Network, Security, GRC, Dev Ops and Application teams.

Key Responsibilities

Infrastructure Systems Management

Support the deployment, configuration and day‑to‑day operation of Windows, Linux and hybrid cloud environments

Administer VMware platforms including ESXi, vCenter, HA, DRS and vMotion

End‑to‑end management of backup and storage solutions

Deploy, configure and maintain Azure Stack HCI and Azure Local clusters

Manage server hardware, SAN storage and backup platforms; perform hardware repairs and maintenance as required

Ensure high system availability, performance and capacity planning across environments

Maintain and support Privileged Access Management (PAM) solutions end to end

Deploy, manage and enhance Managed File Transfer (MFT) solutions

Administer and scale VMware Horizon VDI environments, including pool creation and optimization

Identify opportunities to automate infrastructure operations and reduce manual effort

Network & Security

Support server‑side network configurations including NICs, IP addressing, VLANs, routing, VPNs and load balancing

Work closely with Security teams to implement and maintain security best practices

Assist with vulnerability assessments, remediation activities and security audits

Manage identity and core services such as Active Directory, DNS, DHCP and Group Policy

Configure and report on authentication, access controls, logging and system performance

Backup, Recovery & Business Continuity

Support backup and disaster recovery (DR) solutions and operational processes

Assist with DR automation, validation and participate in scheduled DR testing

Ensure compliance with data protection, retention and backup standards

Operations Support

Troubleshoot and resolve system, application and performance issues

Support application deployment, installation and configuration activities

Collaborate with infra dev and project managers to lead infrastructure projects and initiatives

Act as an escalation point for advanced infrastructure and platform issues

Participate in on‑call rotations and scheduled maintenance windows

Maintain service availability in line with defined SLAs

Automation & Optimization

Develop and maintain automation scripts using Power Shell, Python and Bash

Support configuration management and automation tooling

Monitor systems and assist with performance tuning and optimization

Leverage log monitoring and ingestion tools for proactive issue detection

Governance & Collaboration

Ensure systems comply with organizational policies, standards, licensing and procedures

Operate within ITIL‑based processes including incident, problem and change management

Collaborate effectively with internal teams, vendors and stakeholders

Participate in Dev Ops practices and Git‑based workflows

Contribute to documentation, system improvements and operational runbooks

Assist with infrastructure cost estimates and effort analysis for projects

Required Skills

Operating Systems:
Windows Server 2019/2022/2025 (advanced), Linux (basic to intermediate, including RHEL)

Virtualization Platforms: VMware ESXi, vCenter;
Azure Stack HCI, Azure Local;
Omnissa Horizon VDI

Managed File Transfer Systems:
MoveIT, IP Switch, SFTP

Storage & Backup: IBM SAN, iSCSI storage;
Networker, Data Domain

Identity & Core Services:
Active Directory, DNS (Route
53, BIND, NDS), M365, DHCP, Group Policy

Networking Fundamentals: TCP/IP, VLANs, VPNs, firewalls, network segmentation

Automation & Dev Ops:
Power Shell, Python, Bash;
Git‑based workflows; exposure to configuration management tools

Monitoring & Security:
Log monitoring tools; understanding of Zero Trust principles

ITSM & ITIL:

Experience with ITSM tools and ITIL processes

Preferred Skills

Experience with Microsoft 365 (O365, Exchange, Teams, SharePoint)

Exposure to AWS and/or Microsoft Azure in a support or operational capacity

Fami…