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Mainframe Jobs in Ontario (NOW HIRING)

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

Software Engineer II (Mainframe)

Toronto, ON · On-site

CA$81K - CA$115K/yr

The L9 Mainframe Software Engineer II is responsible for producing high-quality functional and technical designs, participating in complex application development, and delivering reliable technology ...

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 ...

Scotiabank

Mainframe Developer

Toronto, ON · On-site

Comprehensive experience in mainframe development complex programs using Cobol, JCL, IMS DB, DB2, VSAM, CA7, SAS, Netron. Experience working in an agile environment / methodology / deployment (e.g.

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

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 ...

Rubicon Path

A global IT services company is seeking a Sr. Mainframe Storage/Tape Engineer for a remote position. The candidate will be responsible for managing storage solutions, troubleshooting issues, and ...

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 ...

Scotiabank

Quality Engineer(Mainframe)

Toronto, ON · On-site

... in Mainframe environment Experience with testing data transformations, data migrations and batch jobs Experience with API testing (Nice to have) Excellent communication skills with ability to ...

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All JobsMainframe JobsMainframe Jobs in Ontario

Mainframe information

See Ontario salary details

$5

$37

$63

How much do mainframe jobs pay per hour?

As of Aug 25, 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 37% Full Time, and 63% Contract. Highlights an 83% In-person, and 17% Remote job distribution, with an average salary of $78,785 per year, or $37.9 per hour.

Senior Mainframe Developer - Application Design - Hybrid

Tech Talent International

Toronto, ON • Hybrid

CA$50/hr

Full-time

Posted 24 days ago

Job description

Tech Talent International (TTI) supplies technical talent to a variety of clients ranging from Fortune 100/500/1000 companies to startups, small and mid-sized organizations in Canada/US. We are currently hiring a Senior Mainframe Developer - Application Design - Hybrid for our consulting client in the Toronto area.

Role: Senior Mainframe Developer - Application Design - Hybrid

Type: Contract

Rate Range: $50/hr C2C (40 hrs /week)

Duration: 8 months + potential extensions

Location: Hybrid (2 onsite/3 days from home) downtown Toronto, ON, Canada

Mainframe Senior Developer
Skills Required: 

Mainframe DB2 

Application Development~System I 

COBOL400~IT IS_AMS_Mainframe_DB2 Administration
Experience Required: 6-8 Years
Qualifications :
Experience in Mainframe lead Developer
Should have coding experience in CICS,COBOL, DB2, JCL.
Experience with application design, development and deployment
Skills and Responsibilities:
Design, develop and maintain Mainframe COBOL & JCL to meet support and/or project requirements.
Interface with business and IT teams to understand business requirements and translate business requirements into formal technical requirements and application code.
Develop and execute unit test and integration plans/scripts to validate that application changes meet technical specifications.
Responsible for full System Development Life Cycle Participate in production support Provide Solution Delivery Methodology artifacts associated with application components.
Participate in technical reviews at appropriate stages of development.