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Mainframe Programming Jobs in Toronto, ON (NOW HIRING)

United Airlines

Mainframe Developer

Toronto, ON · On-site

As a Senior Developer, you will be working in a development and support capacity on our core mainframe cards and transactions system. The core application is a large, sophisticated mainframe-based ...

Scotiabank

Mainframe Developer

Toronto, ON

You will provide system analysis, design / programming, technical documentation, and support for ... Comprehensive experience in mainframe development complex programs using Cobol, JCL, IMS DB, DB2 ...

Td

Senior Software Engineer (Mainframe)

Toronto, ON · On-site

CA$81K - CA$115K/yr

Adhere to enterprise engineering frameworks, software development methodologies, release processes, and control standards applicable to mainframe development and delivery. * Actively identify and ...

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 ... programming, testing, and status updates. * Translate business, Enterprise Architecture, system ...

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 ...

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

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 ...

Veriday Inc.

Lead DevOps Engineer

Toronto, ON · On-site

As a Lead DevOps Engineer , you will play a critical role in bridging the gap between development ... Lead the design and development of key features for the Helios CI/CD pipeline - VM and Mainframe ...

Scotiabank

Quality Engineer(Mainframe)

Toronto, ON · On-site

... programming languages (Python, Javascript, Java), testing frameworks, and utilities Experience with Customer data and Customer systems, preferably in Mainframe environment Experience with testing ...

Veriday Inc.

Principal DevOps Engineer

Toronto, ON · On-site

As a Principal DevOps Engineer , you will play a critical role in bridging the gap between ... Lead the design and development of key features for the Helios CI/CD pipeline - VM and Mainframe ...

Veriday Inc.

Lead DevOps Engineer

Toronto, ON · Hybrid

As a Lead DevOps Engineer, you will play a critical role in bridging the gap between development ... Lead the design and development of key features for the Helios CI/CD pipeline - VM and Mainframe ...

Veriday Inc.

Principal DevOps Engineer

Toronto, ON · Hybrid

As a Principal DevOps Engineer, you will play a critical role in bridging the gap between ... Lead the design and development of key features for the Helios CI/CD pipeline - VM and Mainframe ...

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All JobsMainframe Programming JobsMainframe Programming Jobs in Toronto, ON

Mainframe Programming information

What is mainframe programming?

Mainframe programming refers to the process of writing, maintaining, and troubleshooting software applications that run on mainframe computers, which are powerful systems used mainly by large organizations for critical operations. Mainframe programmers typically use languages like COBOL, JCL, and Assembler to develop software for batch processing, transaction management, and data processing. These roles require a deep understanding of mainframe operating systems, databases, and networking. Mainframes are known for their reliability, scalability, and ability to handle massive amounts of transactions, making mainframe programmers essential for industries like banking, insurance, and government.

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

To thrive as a Mainframe Programmer, you need a solid understanding of COBOL, JCL, DB2, and other legacy programming languages, often supported by a degree in computer science or a related field. Familiarity with mainframe environments like IBM z/OS, experience with tools such as TSO/ISPF, and certifications like IBM Certified System Programmer are highly valued. Analytical thinking, attention to detail, and effective communication skills help programmers solve complex problems and collaborate with stakeholders. These abilities are crucial for maintaining critical business systems, ensuring reliability, and supporting legacy infrastructure in large organizations.

What are some typical challenges mainframe programmers face when integrating legacy systems with modern technologies?

Mainframe programmers often encounter challenges when integrating legacy systems with newer applications, such as differences in programming languages, data formats, and communication protocols. Ensuring data integrity and maintaining system performance during such integrations can be complex, especially since mainframes often run critical business operations. Collaboration with cross-functional teams, such as front-end developers and system architects, is essential to bridge technical gaps and ensure seamless interoperability. Staying updated with new tools and middleware solutions can also help address these integration challenges effectively.

What is the difference between Mainframe Programming vs Mainframe System Analyst?

AspectMainframe ProgrammingMainframe System Analyst
Primary RoleWriting, testing, and maintaining mainframe codeAnalyzing system requirements and designing solutions
Skills & CertificationsCOBOL, JCL, DB2, certifications in mainframe technologiesBusiness analysis, system design, and project management skills
Work EnvironmentData centers, mainframe servers, coding labsOffice settings, client meetings, project planning
Industry UsageFinancial institutions, government agencies, large enterprisesSame as mainframe programming, often collaborating closely

While mainframe programmers focus on coding and maintaining mainframe applications, mainframe system analysts analyze business needs and design system solutions. Both roles require knowledge of mainframe technologies, but their responsibilities differ in scope and focus.

Is mainframe programming a good career?

Mainframe programming is a stable career with high demand in industries like finance, government, and healthcare that rely on legacy systems. It requires knowledge of languages such as COBOL and skills in maintaining large-scale, secure, and reliable systems, often with certifications and experience in mainframe environments. Job prospects are strong for those with specialized skills, though the field has a smaller, niche workforce compared to other programming areas.

Is mainframe programming still in demand?

Mainframe programming remains in demand in industries such as finance, healthcare, and government, where large-scale legacy systems are still operational. Skilled mainframe developers with knowledge of COBOL, JCL, and mainframe environments are sought after for maintaining and updating these critical systems.

What does a mainframe programmer do?

A mainframe programmer writes, tests, and maintains software for large-scale mainframe computers, often using languages like COBOL, PL/I, or Assembler. They work on critical business applications, ensure system stability, and may use tools like JCL and DB2, often requiring knowledge of mainframe environments and certifications. Their role involves troubleshooting, optimizing performance, and supporting enterprise operations.
Mainframe Programming jobs near you
Infographic showing various Mainframe Programming job openings in Toronto, ON as of August 2026, with employment types broken down into 1% Internship, 82% Full Time, 12% Part Time, 4% Contract, and 1% Nights. Highlights an 86% Physical, 6% Hybrid, and 8% Remote job distribution.

Senior Mainframe Developer - Application Design - Hybrid

Tech Talent International

Toronto, ON • Hybrid

CA$50/hr

Full-time

Posted 23 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.