Canadian Tire Corporation (CTC) is seeking a Sr. Specialist, SRE – Compute Platforms to serve as the enterprise technical owner for CTC's compute platforms, including IBM Mainframe (z/OS), AIX, IBM iSeries, IBM NOI, New Relic, and associated business-critical services and applications.This role is accountable for platform governance, service ownership, lifecycle strategy, observability governance, vendor oversight, and reliability outcomes across the compute environment. Operational execution is performed by HCL/Harmony and other designated support providers. The Sr. Specialist provides governance, strategic direction, technical leadership, and vendor accountability.Key ResponsibilitiesProvide governance and oversight of HCL/Harmony-delivered Mainframe services, including z/OS lifecycle planning, platform currency, capacity strategy, LPAR governance, and infrastructure roadmap planningAssess platform, OS, middleware, and application versions; identify lifecycle, supportability, security, and compliance risks; develop renewal and modernization strategiesLead platform lifecycle governance activities including hardware refresh planning, OS upgrade strategy, maintenance governance, and long-term roadmap alignmentDefine, govern, and periodically review monitoring and observability requirements for Mainframe infrastructure and business-critical servicesProvide governance and oversight of disaster recovery readiness, resiliency planning, recovery testing, and recovery capability validationProvide technical leadership and governance during major incidents, problem investigations, and corrective action planningEstablish governance standards for monitoring coverage, alerting requirements, event correlation,



escalation models, and service health dashboardsDrive continuous improvement of observability maturity, service visibility, monitoring effectiveness, and operational intelligenceValidate vendor-delivered services against contractual obligations, SOW commitments, service level expectations, and governance requirementsLead vendor performance reviews, operational scorecards, service reporting reviews, and continuous improvement initiativesSupport audit, compliance, and control activities related to backup, recovery, disaster recovery, monitoring controls, and infrastructure lifecycle managementLead continuous improvement initiatives focused on service maturity, reliability, observability, sustainability, risk reduction, and operational excellenceRequirements10+ years of experience in platform ownership, infrastructure governance, Site Reliability Engineering (SRE), service management, or enterprise technology leadershipStrong background in Mainframe platform governance, including z/OS environments, lifecycle planning, capacity management, and vendor-managed support modelsExperience governing enterprise monitoring, observability, event management, or operational intelligence practices across large-scale technology environmentsKnowledge of AIX, IBM iSeries, enterprise middleware,



and application hosting environments supporting business-critical workloadsExperience governing enterprise storage and backup services, including capacity planning, recovery validation, and resiliency requirementsExperience supporting disaster recovery governance, DR exercises, recovery reporting, remediation tracking, and resiliency planningExperience working within MSP-governed or vendor-managed service environmentsStrong understanding of incident, problem, change, lifecycle, operational risk, vendor governance, and service management processesDemonstrated ability to lead technical escalations and hold vendors accountable to service expectationsStrong communication skills with the ability to translate technical risk into transparent operational and business impactPreferred QualificationsExperience supporting IBM Mainframe environments, including z/OS, middleware, enterprise schedulers, and file transfer platformsExperience with observability and monitoring platforms such as IBM OMEGAMON, ITM/Tivoli, Netcool, New Relic, Dynatrace, Splunk, Elastic, ThousandEyes, or equivalentFamiliarity with ServiceNow-based incident, event, problem, change, risk, vendor, and lifecycle management workflowsExperience governing infrastructure refreshes, hardware lifecycle initiatives, maintenance planning, and data centre change activitiesExperience working with outsourced infrastructure providers including SOW governance, SLA management, and contract oversightLocation: Toronto, Ontario OR Calgary, Alberta (Hybrid: In-office 4 days a week)Salary Range: $64,000 – $106,000 annually (typical hiring range: $64,000 – $85,000)

📌 Sr. Specialist, Sre – Compute Platforms (Toronto)
🏢 Canadian Tire Corporation
📍 Toronto