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TEKFORTUNE INC

IBM z/OS Mainframe Performance Specialist

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Dec 3, 2026
Posting language: English
Posted: Nov 3, 2026

Original job description

Title: IBM z/OS Mainframe Performance Specialist

Location: Toronto, Ontario, Canada

Work Model: Hybrid – 1–2 days onsite per week

Duration: 9 months (possible 3-month extension)

Industry: Banking / Financial Services (BFSI)

Job Description

We are looking for an experienced Senior IBM z/OS Mainframe Performance Specialist with strong expertise in IBM Workload Manager (WLM), mainframe performance tuning, capacity planning, IMS and Db2.

The ideal candidate will be responsible for assessing and optimizing enterprise IBM z/OS environments, improving workload management, monitoring system performance, and developing capacity management and forecasting strategies.

Key Responsibilities

Assess and analyze enterprise IBM z/OS mainframe environments across production, development, testing and disaster recovery LPARs.

Review and optimize IBM WLM policies, service classes, report classes, performance goals and workload priorities.

Perform mainframe performance tuning, CPU utilization analysis and resource optimization.

Develop and implement WLM optimization strategies to improve workload performance and system efficiency.

Perform capacity planning, forecasting and trend analysis for CPU, storage and system resources.

Analyze and optimize IMS transaction performance and Db2 workloads.

Develop and enhance enterprise performance reports covering LPAR performance, WLM goals, IMS response times, Db2 transactions and capacity trends.

Troubleshoot production performance issues, perform root-cause analysis and recommend corrective actions.

Provide technical advisory services, documentation and knowledge transfer to internal teams.

Required Technical Skills

Strong experience with IBM z/OS Mainframe environments.

Extensive hands-on expertise in IBM Workload Manager (WLM).

Expertise in WLM policy configuration, service classes, report classes and performance goals.

Strong mainframe performance tuning and optimization experience.

Experience in enterprise capacity planning and forecasting.

Strong IMS and Db2 performance analysis and optimization experience.

Experience with LPAR performance monitoring and CPU/storage utilization.

Strong analytical, troubleshooting and communication skills.

Preferred Experience

Banking or financial services industry experience.

Experience supporting large-scale enterprise mainframe environments.

Experience developing performance reporting and capacity management frameworks.

Experience providing technical consulting, recommendations and knowledge transfer.

Engagement Details

Nine-month engagement with potential extension.

Hybrid working arrangement with 1–2 days onsite per week in Toronto.

Occasional additional onsite attendance and after-hours support may be required.

The role involves four major deliverables covering performance assessment, WLM optimization, reporting and technical advisory services.

Ideal Candidate Profile

Candidates should have strong experience as a Senior z/OS Performance Engineer, IBM WLM Specialist, Mainframe Performance Consultant or Mainframe Capacity Planning Specialist.

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More about this job

Responsibilities

Assess and optimize enterprise IBM z/OS environments, including WLM policies, mainframe performance, IMS and Db2 workloads, and CPU and storage utilization. Develop capacity forecasts and performance reports, troubleshoot production issues, and provide technical recommendations, documentation, and knowledge transfer.

Requirements

Candidates need extensive hands-on experience with IBM z/OS and WLM, including policy configuration, service classes, report classes, and performance goals. Strong mainframe tuning, capacity planning, IMS and Db2 performance analysis, and communication skills are required; banking or financial services experience is preferred.

Skills

IBM z/OS
IBM Workload Manager (WLM)
WLM Policy Configuration
Mainframe Performance Tuning
Capacity Planning
Capacity Forecasting
IMS Performance Analysis
Db2 Performance Analysis
LPAR Performance Monitoring
CPU Utilization Analysis
Storage Utilization
Workload Optimization
Performance Reporting
Root-Cause Analysis
Troubleshooting
Technical Advisory Services

Visa sponsorship

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Keywords

IBM z/OS
IBM Workload Manager (WLM)
Mainframe
LPAR
WLM Policies
Service Classes
Report Classes
Performance Goals
Performance Tuning
CPU Utilization
Storage Utilization
Capacity Planning
Capacity Forecasting
Trend Analysis
IMS
Db2
Performance Reporting
Workload Management
Production Troubleshooting
Root-Cause Analysis
Disaster Recovery
Banking
Financial Services
Technical Consulting
Knowledge Transfer

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