Mainframe developer Jobs in Toronto, ON

Application Deadline:

05/30/2026

Address:

4100 Gordon Baker Road

Job Family Group:

Technology

As a Mainframe z/OS Systems Programmer, you will be responsible for developing and implementing IT mainframe infrastructure and platform strategies. Your role will involve ensuring the reliability and security of our mainframe systems, supporting disaster recovery procedures, and collaborating with stakeholders to recommend infrastructure solutions. Your expertise in z/OS system skills will be crucial in maintaining and upgrading our mainframe environment. This is a hybrid role and will require a minimum of 2 days in our Scarborough office.

Key Responsibilities:

• Develop and implement IT mainframe infrastructure and platform strategies to support business needs and growth.

• Design, build, install, test, maintain, monitor, and upgrade mainframe infrastructure.

• Manage current and future technical platform hardware, operating systems, security, and system services layers.

• Ensure reliable and secure computing and communications capabilities to run business software with optimal cost and availability.

• Support disaster recovery procedures and troubleshoot network and connectivity issues promptly to minimize disruption.

• Collaborate with stakeholders to recommend infrastructure solutions based on engineering requirements.

• Build effective relationships with internal and external stakeholders to support strategic initiatives.

• Conduct independent analysis and assessment to resolve strategic issues.

• Break down strategic problems, analyze data, and provide insights and recommendations.

• Ensure infrastructure solutions are scalable, flexible, supportable, fully monitored, and standardized.

• Identify opportunities to strengthen the technology organization by sharing expertise, mentoring employees, and building communities of practice.

• Stay abreast of industry trends through professional associations, practice communities, and individual learning.

• Exercise judgment to identify, diagnose, and solve problems within given rules.

• Work independently on a range of complex tasks, including unique situations.

• Additional responsibilities as assigned.

Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field.

• Typically, between 5-7 years of relevant experience, or an equivalent combination of education and experience.

• Comfortable with mainframe tools/components such as TSO, ISPF, NetView, RACF, SMP, and TCP/IP.

• Working knowledge of mainframe concepts such as LPARs, SYSPLEX, and MVS.

• Expert knowledge in Unix System Services, RACF, Certificates

• Possesses a deep understanding and problem-solving ability leveraging logs and dumps

• Capable of installing, maintaining, and upgrading mainframe software in z/OS using SMP/E

• Strong verbal and written communication skills.

• Excellent collaboration and team skills.

• In-depth analytical and problem-solving skills.

• Data-driven decision-making abilities.

Nice to Have:

• Working knowledge of z/OS, Vanguard and Broadcom products, TCP/IP

Salary:

$75,900.00 - $141,900.00

Pay Type:

Salaried

The above represents BMO Financial Group’s pay range and type.

Salaries will vary based on factors such as location, skills, experience, education, and qualifications for the role, and may include a commission structure. Salaries for part-time roles will be pro-rated based on number of hours regularly worked. For commission roles, the salary listed above represents BMO Financial Group’s expected target for the first year in this position.

BMO Financial Group’s total compensation package will vary based on the pay type of the position and may include performance-based incentives, discretionary bonuses, as well as other perks and rewards. BMO also offers health insurance, tuition reimbursement, accident and life insurance, and retirement savings plans. To view more details of our benefits, please visit:

About Us

At BMO we are driven by a shared Purpose: Boldly Grow the Good in business and life. It calls on us to create lasting, positive change for our customers, our communities and our people. By working together, innovating and pushing boundaries, we transform lives and businesses, and power economic growth around the world.

As a member of the BMO team you are valued, respected and heard, and you have more ways to grow and make an impact. We strive to help you make an impact from day one – for yourself and our customers. We’ll support you with the tools and resources you need to reach new milestones, as you help our customers reach theirs. From in-depth training and coaching, to manager support and network-building opportunities, we’ll help you gain valuable experience, and broaden your skillset.

To find out more visit us at .

BMO is committed to an inclusive, equitable and accessible workplace. By learning from each other’s differences, we gain strength through our people and our perspectives. Accommodations are available on request for candidates taking part in all aspects of the selection process. To request accommodation, please contact your recruiter.

Note to Recruiters: BMO does not accept unsolicited resumes from any source other than directly from a candidate. Any unsolicited resumes sent to BMO, directly or indirectly, will be considered BMO property. BMO will not pay a fee for any placement resulting from the receipt of an unsolicited resume. A recruiting agency must first have a valid, written and fully executed agency agreement contract for service to submit resumes.