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Mainframe Jobs in Ontario (NOW HIRING)

Pacer Group

Mainframe Tester

Toronto, ON · Hybrid

Mainframe Tester Location: Toronto, ON Work Arrangement: Hybrid-4 Days onsite Employment Type: Contract Duration: 12 Months Domain: BFSI Pay Rate: CAD 40-45 /hour Incorporated Application Deadline:

Pacer Group

Mainframe Developer

Toronto, ON · Hybrid

Mainframe Developer Location: Toronto, ON Work Arrangement: Hybrid (2-3days WFO) Employment Type: Contract Domain: BFSI Duration:6-12 months Hourly rate :-CAD 45-47/hour Application Deadline: Sep ...

Td

Mainframe Developer

Toronto, ON · On-site

CA$81K - CA$115K/yr

The Senior Mainframe Developer is responsible for the design, development, modernization, and support of critical applications within Core Investment Management (Core IM). The role involves ...

LearnQuest

Mainframe Expert (Remote)

Toronto, ON · Remote

We are seeking a skilled Mainframe "File-Manager" Expert to join our dynamic team and contribute to the development of a comprehensive course. The ideal candidate will have in-depth expertise in File ...

Td

Mainframe Software Engineer II

Toronto, ON · On-site

CA$81K - CA$115K/yr

Hands-on experience in application design and development, with strong working knowledge of mainframe technologies such as COBOL, JCL, CICS, DB2, VSAM, and batch processing frameworks. Develop ...

Td

Software Engineer II (Mainframe)

Toronto, ON

CA$81K - CA$115K/yr

Strong engineering background delivering enterprise applications, including mainframe solutions, batch processing systems, online transaction processing, and service-enabled integrations. * 7+ years ...

United Airlines

Mainframe Developer

Toronto, ON

The core application is a large, sophisticated mainframe-based system which connects clients to their banking products and services. This 24/7 application supports critical delivery channels such as ...

CIBC

Mainframe Developer

Toronto, ON · Hybrid

As a Mainframe Developer, you'll lead the planning, technical design, and development of complex, enterprise-scale applications. You'll assemble, implement, and maintain flexible solutions that ...

Td

Senior Software Engineer (Mainframe)

Toronto, ON · On-site

CA$81K - CA$115K/yr

Develop program specifications; design, code, integrate, test, debug, and implement mainframe solutions in accordance with business, technical, and control requirements. * Support business inquiries ...

Td

Senior Software Engineer (Mainframe)

London, ON · On-site

CA$81K - CA$115K/yr

Develop program specifications; design, code, integrate, test, debug, and implement mainframe solutions in accordance with business, technical, and control requirements. * Support business inquiries ...

Td

Associate Software Engineer - Mainframe

Toronto, ON · On-site

CA$59K - CA$84K/yr

Requires IBM Mainframe applications systems knowledge and business knowledge. * Responsible for analyzing a broad range of business requirements, conducting program / system research and analysis to ...

Td

Quality Engineer I - Mainframe

Toronto, ON · Remote

CA$69K - CA$98K/yr

Mainframe testing (COBOL, DB2, IMS, CICS screens is a must) and API is good to have. * As a Test engineer for small complexity initiatives, accountable for implementing effective test strategies and ...

LearnQuest

Mainframe DevOps Expert (Remote)

Toronto, ON · Remote

We are seeking a highly skilled Mainframe DevOps Expert to join our team for an exciting short-term project. Key Responsibilities: As a Curriculum Development Specialist, your primary responsibility ...

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Mainframe information

See Ontario salary details

$5

$37

$63

How much do mainframe jobs pay per hour?

As of Sep 8, 2026, the average hourly pay for mainframe in Ontario is $37.88, according to ZipRecruiter salary data. Most workers in this role earn between $26.68 and $40.14 per hour, depending on experience, location, and employer.

What is a mainframe?

Mainframes are powerful computers used mainly by large organizations for critical applications, bulk data processing, large-scale transaction processing, and enterprise resource planning. They are known for their reliability, scalability, and security, making them essential for industries like banking, healthcare, and government. Mainframes can handle thousands of users and transactions simultaneously, supporting the core operations of many businesses.

What are the key skills and qualifications needed to thrive as a mainframe developer, and why are they important?

To excel as a Mainframe Developer, a strong background in COBOL, JCL, mainframe operating systems (like z/OS), and database management is essential, often supported by a degree in computer science or a related field. Familiarity with tools such as IBM DB2, CICS, VSAM, and mainframe version control systems is typically required, and certifications like IBM Certified System Programmer can be advantageous. Analytical thinking, problem-solving abilities, and effective communication are important soft skills for identifying issues and collaborating with cross-functional teams. These skills ensure reliable maintenance, development, and modernization of mission-critical legacy systems that support large-scale business operations.

What are some typical challenges faced by mainframe professionals when integrating legacy systems with modern technologies?

Mainframe professionals often encounter challenges when integrating legacy systems with newer technologies, such as ensuring data compatibility, managing security protocols, and minimizing downtime during migration. These tasks require a deep understanding of both the existing mainframe architecture and the modern platforms being introduced. Collaboration with cross-functional teams—including application developers, security specialists, and project managers—is essential to ensure seamless integration and to address potential issues proactively. Staying updated on the latest integration tools and best practices also helps in overcoming these challenges efficiently.

What is the difference between Mainframe vs Mainframe Developer?

AspectMainframeMainframe Developer
Primary RoleMaintains and manages mainframe hardware and systemsDesigns, develops, and tests mainframe applications
Skills & CertificationsKnowledge of mainframe hardware, OS, and basic scriptingProficiency in COBOL, JCL, and mainframe programming languages
Work EnvironmentData centers, enterprise IT departmentsDevelopment teams within mainframe environments
Industry UsageUsed by organizations with legacy systemsDevelops and maintains those legacy systems

While Mainframe professionals focus on maintaining the hardware and system infrastructure, Mainframe Developers specialize in creating and updating mainframe applications. Both roles require knowledge of mainframe environments, but their responsibilities differ significantly within the same industry.

Is mainframe a good career option?

Mainframe careers involve working with large-scale computer systems used by many organizations for critical applications. The role typically requires knowledge of programming languages like COBOL, skills in system maintenance, and certifications such as IBM Certified System Programmer. It offers stable employment opportunities and competitive salaries due to the specialized skill set involved.
More about Mainframe jobs

What are the most commonly searched types of Mainframe jobs in Ontario?

The most popular types of Mainframe jobs in Ontario are:

What are popular job titles related to Mainframe jobs in Ontario?

For Mainframe jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Mainframe jobs in Ontario look for?

The top searched job categories for Mainframe jobs in Ontario are:

Mainframe jobs near you
Infographic showing various Mainframe job openings in Ontario as of August 2026, with employment types broken down into 79% Full Time, 10% Part Time, and 11% Contract. Highlights an 79% Physical, 9% Hybrid, and 12% Remote job distribution, with an average salary of $78,785 per year, or $37.9 per hour.

Mainframe Tester

Pacer Group

Toronto, ON • Hybrid

Full-time

This job post has expired 4 days ago. Applications are no longer accepted.

Job description

Job Title: Mainframe Tester

Location: Toronto, ON

Work Arrangement: Hybrid-4 Days onsite

Employment Type: Contract

Duration: 12 Months

Domain: BFSI

Pay Rate: CAD 40-45 /hour Incorporated

Application Deadline: Sep 30th, 2026


SKILLS REQUIRED


  • 4+ years of experience in Mainframe Testing, including functional, integration, system, and regression testing.
  • Strong hands-on experience with IBM Mainframe technologies including COBOL, JCL, DB2, CICS, VSAM, and SQL.
  • Experience validating REST API integrations with Mainframe applications.
  • Proficiency in writing and executing SQL queries for backend data validation and DB2 database testing.
  • Hands-on experience with Endevor for source code/version control and release management.
  • Experience using File-AID/File Manager for test data creation, validation, and analysis.
  • Strong knowledge of CA-7 for batch job scheduling, execution, and validation of batch processes.
  • Experience in test case design, defect tracking, test execution, and root cause analysis.
  • Familiarity with Agile/Scrum, SDLC, and defect management tools such as Jira or ALM.


EEOC Compliance:

We are an equal opportunity employer, and all qualified applicants will receive consideration for employment.


DISCLAIMER

AI Usage Policy: Pacer Group uses AI to assist in screening applications. Final hiring decisions are made by human recruiters based on qualifications and experience.

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