Sr. IBM z/OS WLM Performance & Capacity Management Specialist

Our client, Government of Ontario is seeking a Sr. IBM z/OS WLM Performance & Capacity Management Specialist to join their team. As a Sr. IBM z/OS WLM Performance & Capacity Management Specialist, you will be part of the Mainframe Performance & Capacity Management group supporting mission-critical IBM z/OS operations. The ideal candidate will have a hands-on, optimization-focused mindset, strong analytical problem-solving skills, and the ability to translate performance data into actionable WLM and capacity recommendations.

Job Title:Sr. IBM z/OS WLM Performance & Capacity Management Specialist

Location:Toronto, ON (2 days on site)

Pay Range:$80

What's the Job?

• Assess existing z/OS WLM policies and configurations across multiple LPARs, identifying bottlenecks, resource contention, and optimization opportunities.
• Design, recommend, and support implementation of WLM policy improvements, including service classes, report classes, goals, velocities, and workload priorities.
• Analyze RMF/SMF performance data to drive performance tuning decisions and validate the impact of WLM changes.
• Produce enhanced performance reporting and analytics, including IMS and Db2 transaction-level performance reporting and CPU/storage/workload utilization trends.
• Provide operational advisory support for production performance investigations, including root-cause analysis, technical recommendations, documentation, and knowledge transfer.

What's Needed?

• Minimum 10 years of hands-on, relevant experience in IBM z/OS performance, WLM policy analysis/design/implementation/tuning, and capacity management.
• Deep, practical expertise in IBM Workload Manager (WLM), including service class and report class configuration, goal/velocity tuning, and workload prioritization.
• Strong experience analyzing RMF and SMF performance data to identify performance drivers and guide optimization efforts.
• Experience with IMS performance management (transaction performance and response-time analysis) and Db2 performance management (transaction/subsystem bottleneck analysis).
• Proven capacity planning experience, including resource utilization analysis, workload forecasting, trend analysis, and support for 24x7 mission-critical environments.

What's in it for me?

• Opportunity to work as a hands-on WLM performance optimization expert in a large enterprise IBM z/OS mainframe environment supporting mission-critical applications.
• Engage in end-to-end performance improvement work: assessment, WLM optimization, validation, and reporting/analytics.
• Contribute to capacity planning and forecasting recommendations that improve operational reliability and performance outcomes.
• Support production performance troubleshooting with root-cause analysis and actionable technical guidance.
• Share knowledge through technical documentation and knowledge transfer sessions.

If this is a role that interests you and you'd like to learn more, click apply now and a recruiter will be in touch with you to discuss this great opportunity. We look forward to speaking with you!

About ManpowerGroup, Parent Company of: Manpower, Experis, Talent Solutions, and Jefferson Wells.

ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands – Manpower, Experis, Talent Solutions, and Jefferson Wells – creates substantial value for candidates and clients across more than 75 countries and territories and has done so for over 70 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent.