Senior Technology Architect

Job Details

• Job : 26-16528
• Job Title: Senior Technology Architect
• Location: Toronto, ON / Onsite
• Duration: 207 Business Days with possible extension
• Client: Public Sector
• Pay Rate: CAD $110–$115 per hour

• 10+ years of experience supporting and managing enterprise IBM Mainframe infrastructure in large-scale environments, preferably within government or public sector organizations
• 7+ years of demonstrated experience in Mainframe Performance and Capacity Management roles with responsibility for operational support and strategic planning
• Strong experience with IBM Mainframe environments including z/OS, IMS, DB2, and enterprise computing infrastructure
• Hands‑on experience using capacity management and performance analysis tools including MICS, RMF, SMF, and other ISV tools
• Experience analyzing SMF data and preparing capacity assessments, workload forecasting, and performance reporting
• Proven experience conducting capacity planning activities for CPU upgrades, hardware refreshes, and performing what‑if impact analysis/modeling
• Strong understanding of MIPS, MSUs, zIIP utilization, CPU optimization, workload estimation, and performance tuning within multi‑partitioned mainframe environments
• Experience reconciling mainframe billing, ISV workload charges, and identifying opportunities for CPU cost savings and resource optimization
• Hands‑on experience with SAS Programming for reporting, analysis, and performance/capacity management activities
• Strong knowledge of IBM Mainframe CPU concepts including CBUs, CoD, and enterprise workload management practices
• Experience supporting large‑scale Mainframe migration, transition, refresh, upgrade, decommissioning, and disaster recovery (DR) initiatives
• Experience planning, configuring, and supporting installation of new Mainframe hardware platforms and infrastructure upgrades
• Strong experience in incident management, problem management, root cause analysis, SLA adherence, operational support, and change management processes
• Experience preparing technical documentation including operational procedures, MOPs, capacity plans, incident reports, and infrastructure documentation
• Excellent communication skills with proven ability to collaborate with vendors, infrastructure teams, application teams, operations, and business stakeholders

• Provide operational support for enterprise Mainframe Performance and Capacity Management activities to sustain day‑to‑day operations of Mainframe software and program products
• Analyze Mainframe resource utilization, performance metrics, SMF data, and capacity trends to optimize infrastructure performance and ensure efficient resource usage
• Develop, maintain, and update Mainframe capacity plans, workload forecasts, performance reports, and infrastructure assessments
• Perform capacity requirement analysis for CPU upgrades, refresh initiatives, workload growth, and infrastructure changes using what‑if modeling techniques
• Support Mainframe hardware refresh, migration, transition, upgrade, installation, and decommissioning activities across enterprise environments
• Participate in disaster recovery initiatives including DR exercises, infrastructure readiness assessments, hardware implementations, and recovery testing activities
• Configure, manage, and generate reports using performance and capacity tools including MICS, RMF, SMF, and other Mainframe monitoring solutions
• Support vendor management activities, Mainframe billing reconciliation, ISV workload analysis, and infrastructure cost optimization initiatives
• Provide technical expertise for incident analysis, troubleshooting, root cause identification, and implementation of preventive measures to improve system reliability
• Manage operational tickets, change requests, and problem management activities while ensuring SLA compliance and timely issue resolution
• Develop technical procedures, MOP documentation, capacity reports, and operational documentation supporting enterprise Mainframe environments
• Collaborate with IT Operations, Infrastructure teams, Application Development, Production Support, and external vendors to deliver Mainframe solutions aligned with organizational objectives
• Provide recommendations on infrastructure modernization, performance optimization, cost reduction strategies, and best practices for enterprise Mainframe environments
• Support large‑scale Data Center initiatives, hardware/software refresh projects, and critical enterprise infrastructure transformations while ensuring continuity and operational excellence