Mainframe Capacity and Performance Specialist

Location: Toronto

Final date to receive applications:10/30/2026

Address:4100 Gordon Baker Road Job Family Group:

Technology Develops and implements IBM z/OS systems infrastructure & platform performance and capacity strategies for BMO to support anticipated business strategies and organizational growth. This includes working with middleware and related data collection and analysis tools, to help to optimize performance of BMO’s mainframe applications.

Understands current and future technical platform hardware, operating system, security, and system services layers. Ensures reliable and secure computing and communications capabilities to run the business software while enabling the lowest operational cost/highest availability options. Performs capacity workload modeling and availability analysis. Works with stakeholders and recommends infrastructure solutions based on engineering requirements.  Builds effective relationships with internal/external stakeholders.

Breaks down strategic problems, and analyses data and information to provide insights and recommendations.

Identify and resolve mainframe applications performance bottlenecks and issues in a timely manner.

Collaborate with teams to improve application design and code for better performance

Provides input into the planning and implementation of operational programs.

Designs/engineers system-operating capacity (such as bandwidth, disk space, storage, and CPU utilization) to ensure high availability and performance of end-user applications and systems.

Responsible for maintaining and improving overall system/technology performance; monitors production, outputs, and services to ensure that SLAs and other quality metrics are being met.

Monitor and analyze performance metrics for mainframe applications & middleware.

Utilize various reporting and visualization tools (including ITBI, Intelli Magic) to generate performance reports and make data-driven recommendations.

Identifies and defines new process and/or system improvement opportunities.

Evaluates and recommends emerging technologies to influence the design process.

Identifies opportunities to strengthen the capability of the technology organization at BMO including sharing expertise to promote technical development, mentoring employees, building communities of practice and networks across technology.

Stays abreast of industry technical and business trends technologies in mainframe, middleware and application performance through participation in professional associations, practice communities & individual learning.

Focus is primarily on business/group within BMO; may have broader, enterprise-wide focus.

Broader work or accountabilities may be assigned as needed.

Document performance issues and solutions for future reference.

Requirements: 4-6 years experience in the IT industry with 1-3 years experience with an application performance focus including testing, tuning, analysis or measurement.

Diploma or bachelor’s degree in computer science, Information Technology or a related field.

Detail-oriented with excellent organizational and communication skills and the ability to influence direction.

Working experience working with IBM  z/OS and some or all of JCL, CICS, Db2, VSAM RLS, MQ, Web Sphere, and z/OS Connect.

Working knowledge of mainframe tools and utilities, including some or all of RMFMON, Omegamon, Netview, zWIN, Dynatrace, IZPCA, Intelli Magic, ITBI.Data Analytics, AI and Machine Learning, Automation, Capacity Planning

Working experience with MXG & SQL is a plus.

Ability to apply knowledge of application performance tuning and optimization.

Ability to work independently and quickly learn and apply new skills.

Verbal & written communication skills
- In-depth.

Collaboration & team skills
- In-depth.

Analytical and…