Position:
Mainframe Performance & Capacity
Specialist

Location:
Toronto, ON

Job ID#:
RQ11128

Duration:
10 Months

Role Overview

The Mainframe Performance & Capacity Specialist acts as
a subject matter expert supporting enterprise‑scale mainframe performance,
capacity planning, and operational stability. The role focuses on ensuring
efficient use of mainframe resources through analysis, forecasting, reporting,
and close collaboration with infrastructure, operations, and application teams.

Key Responsibilities

• 
  Provide
  performance and capacity operational support for day‑to‑day mainframe
  software and program products.
• 
  Analyze
  mainframe resource utilization and capacity data to ensure optimal use of
  computing infrastructure, including IMS and DB2 subsystems.
• 
  Develop,
  maintain, and update mainframe capacity plans.
• 
  Provide
  input and support for mainframe refresh initiatives, upgrades, and
  hardware installations.
• 
  Prepare
  capacity assessments related to application workload changes and project
  initiatives.
• 
  Support
  vendor billing reconciliation and respond to capacity‑related inquiries.
• 
  Perform
  incident analysis, resolution, and prevention, including documentation of
  root cause and preventative actions.
• 
  Use
  vendor and ISV tools to manage incident tracking and resolution.
• 
  Participate
  in disaster recovery hardware installation activities and periodic DR
  exercises to maintain system readiness.
• 
  Plan,
  configure, and support new mainframe hardware platforms.
• 
  Provide
  migration and decommissioning support for mainframe software and
  networking components.
• 
  Perform
  daily operational changes, incident and problem management, and on‑call/standby
  support as required.
• 
  Adhere
  to SLA metrics, maintenance standards, and change management processes.
• 
  Produce
  technical methods of procedure (MOPs), system captures, and detailed
  documentation.

Qualifications & Experience

• 
  Minimum
  7 years of experience
  in Mainframe Performance and Capacity
  Management roles.
• 
  Experience
  using interactive capacity management tools such as
  MICS, RMF, and
  other ISV tools
  .
• 
  Strong
  hands‑on experience working with
  SMF data
  .
• 
  Proven
  experience performing capacity assessments for CPU upgrades and refresh
  initiatives, including “what‑if” impact modeling.
• 
  Experience
  reconciling
  mainframe billing for ISV workloads
  .
• 
  Ability
  to perform complex calculations estimating workload impacts in
  MIPS and
  MSUs
  across multi‑partitioned environments.
• 
  Strong
  understanding of
  zIIP utilization
  .
• 
  Experience
  with
  SAS programming
  .
• 
  Demonstrated
  ability to identify and recommend
  CPU cost‑savings opportunities
  .
• 
  Solid
  understanding of
  IBM mainframe CPU concepts
  , including CBUs and
  Capacity on Demand (CoD).
• 
  Experience
  configuring and reporting using tools such as
  MICS and RMF
  .
• 
  Strong
  documentation, communication, and stakeholder collaboration skills.
• 
  Experience
  supporting large, enterprise‑scale mainframe environments.

About Symbiotic Digital

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