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Mainframe Programmer Jobs in Toronto, ON (NOW HIRING)

Scotiabank

Programmer Analyst Senior

Toronto, ON · On-site

As a Programmer Analyst within Core Banking Engineering, you will be responsible to develop and ... have: mainframe development experience and enterprise architectural knowledge/experience ...

Td

Quality Engineer I (Core-Java & Mainframe)

Toronto, ON

CA$69K - CA$98K/yr

... Engineering or Software Testing using industry standard tools. * Strong knowledge of Core-Java concepts (OOP, collections, exception handling) * Experience in Mainframe testing using file-aid/Insync ...

Td

Software Engineer III

Toronto, ON

CA$125K - CA$154K/yr

Develop and maintain technical solutions, ensuring adherence to engineering and architectural ... Mainframe experience: * COBOL, JCL, IMS DB/DC environment, IMS Databases, DB2, MQ, Endevor, CA7 ...

BMO Capital Markets

Senior Technical Lead

Toronto, ON · On-site

... Mainframe ecosystems, cloud technologies, APIs, and enterprise-scale production environments . As a technical leader, you'll influence platform strategy, guide engineering teams, solve complex ...

Manulife

Manager Engineering

Toronto, ON · On-site

As a Manager Engineering, you will lead technology teams in delivering secure, reliable, and user ... REST APIs, Mainframe technologies, Windows/SQL Server, Java, Apache Tomcat, Salesforce, GitHub ...

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Mainframe Programmer information

What is a mainframe programmer?

Mainframe Programmers are specialized software developers who design, write, test, and maintain code for mainframe computer systems. These professionals primarily work with legacy programming languages such as COBOL, JCL, and sometimes Assembler, to ensure critical business applications run smoothly and securely. They are often employed in industries like banking, insurance, and government where mainframe systems remain essential for processing large volumes of transactions. Mainframe Programmers also troubleshoot system issues, optimize performance, and may assist in system upgrades or migrations.

What does a mainframe programmer do?

As a mainframe programmer, your job is to design and program applications for mainframe computers, which are powerful machines that help to run many commercial and industrial processes. In this role, you may conduct an analysis of existing software to ensure it is as error-free as possible, help test new software, and implement software in a way that makes it easy for users to access. Mainframe programmers often use coding languages like COBOL, C++, SQL, Java, and CLIST when programming software. Somewhat unusually, most companies prefer to stick with specific coding languages even when they are not necessarily the best language for the job in order to reduce complexity and the risk of errors.

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 general mainframe architecture, often supported by a degree in computer science or related experience. Familiarity with tools like IBM z/OS, TSO/ISPF, and source control systems such as Endevor or Changeman is typically required. Strong problem-solving skills, attention to detail, and effective communication set top performers apart in this role. These abilities are critical for maintaining legacy systems, ensuring data integrity, and supporting business-critical operations in large organizations.

What are some common challenges mainframe programmers face when working on legacy systems?

Mainframe Programmers often encounter challenges such as understanding complex, decades-old codebases written in languages like COBOL or Assembler, and integrating these systems with modern technologies. Documentation may be sparse or outdated, requiring strong problem-solving and analytical skills to decipher business logic. Additionally, coordinating with cross-functional teams—including business analysts, testers, and infrastructure specialists—is essential to ensure smooth system updates and migrations. Adaptability and effective communication are key to overcoming these obstacles and supporting mission-critical applications.

What is the difference between Mainframe Programmer vs Mainframe Developer?

AspectMainframe ProgrammerMainframe Developer
Primary RoleWriting, testing, and maintaining mainframe codeDesigning and developing mainframe applications and systems
Skills & CertificationsCOBOL, JCL, DB2, certifications in mainframe technologiesSimilar skills, often with additional focus on system design and architecture
Work EnvironmentMainframe environments in banking, finance, governmentSame environments, with broader development responsibilities
Job FocusCode implementation and troubleshootingApplication development and system integration

While both roles work within mainframe environments and share skills like COBOL and JCL, Mainframe Programmers primarily focus on coding and maintenance, whereas Mainframe Developers are involved in designing and developing new applications and systems. The roles often overlap, but the developer role typically encompasses a broader scope in application lifecycle management.

Is a mainframe programmer a good career?

A mainframe programmer is a specialized IT professional who develops and maintains legacy systems using languages like COBOL and tools such as IBM Z. The role offers stable employment opportunities, especially in industries like finance and government, with demand for skills in mainframe environments remaining steady despite the rise of cloud computing. Certifications and experience with mainframe hardware and software can enhance job prospects and salary potential.

Is a mainframe programmer still in demand?

Mainframe programmers are still in demand in industries such as finance, government, and healthcare that rely on legacy systems. They typically need skills in COBOL, JCL, and mainframe environments, and demand remains stable due to the continued use of mainframe technology for critical applications.
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Mainframe Programmer jobs near you
Infographic showing various Mainframe Programmer job openings in Toronto, ON as of August 2026, with employment types broken down into 75% Full Time, and 25% Contract. Highlights an 100% In-person job distribution.

Senior DevOps Platform Architect

Veriday Inc.

Toronto, ON • Hybrid

Contractor

Re-posted 16 days ago

Job description

We are seeking a dynamic and technically strong Senior DevOps Platform Architectwho thrives in fast-paced environments and enjoys leading initiatives that drive operational excellence.


As a Senior DevOps Platform Architect, you will play a critical role in bridging the gap between development and operations, ensuring that our applications are built, tested, and deployed with speed, reliability, and compliance with the Enterprise security standards. A key focus of this role is leading the migration of deployment automation from IBMUrbanCode Deploy(UCD) toOctopus Deploy, including the review and conversion of existing Groovy-based deployment scripts into optimized Octopus Deploy solutions, rigorous testing, production enablement, and continuous improvement of enterprise CI/CD capabilities.


This is a 5-month contract, hybrid position with the potential for extension. The successful candidate is expected to work from our Toronto office three days per week.


What will you do?

  • Lead the design and development of key features for the Helios CI/CD pipeline - VM and Mainframe platforms
  • Lead the migration of CI/CD deployment pipelines from IBM UrbanCode Deploy (UCD) to Octopus Deploy, ensuring alignment with enterprise DevOps standards.
  • Review, analyze, and refactor existing UCD deployment scripts and workflows, translating them into Octopus Deploy processes and automation frameworks.
  • Develop, test, and optimize deployment automation in Octopus Deploy using C# and modern DevOps practices.
  • Validate migrated pipelines through rigorous testing and ensure successful execution in production environments.
  • Drive continuous improvement initiatives by identifying opportunities to simplify, standardize, and optimize deployment processes during the UCD-to-Octopus transition.
  • Collaborate with development, infrastructure, and release management teams to ensure smooth deployment operations and production readiness.
  • Troubleshoot and resolve deployment, automation, and release-related issues across distributed and mainframe environments.
  • Contribute to CI/CD platform governance, security, reliability, and operational excellence.



What do you need to Succeed?


  • Minimum 5 years of developer experience with a deep understanding of DevOps Principles and best practices forCI/CD, including designing at an Enterprise scale
  • Experience migrating deployment automation from legacy DevOps platforms (preferably IBM UrbanCode Deploy) to modern deployment orchestration platforms such as Octopus Deploy.
  • Proficiency in Groovy scripting with experience reviewing, maintaining, and refactoring existing automation scripts.
  • Strong development experience in C# with the ability to build and optimize deployment automation within Octopus Deploy.
  • Experience designing, testing, and deploying production-ready release automation solutions.
  • Deep understanding of DevOps principles, Infrastructure as Code, deployment orchestration, and release management best practices.
  • Understand configuration as code, RBAC, and working within the Mainframe environment from modern deployment platforms
  • Experience with DevOps tools, platforms, and interfaces: Jenkins, UCD, Github, Github Actions, JFrog Artifactory, Hashicorp Vault, Ansible,Octopus Deploy
  • Proficient with Java,Python, Typescript,Groovy, YAML, NPM
  • Experience with deploying to cloud platforms: OCP,Azure, AWS
  • Highly proficient with IBM Developer for z/OS (IDz).
  • Experience with Mainframe utilities and platforms: ISPF, TSO, Mainframe Filesystems, JES, Endeavor



We offer a competitive hourly rate, a casual workspace, and great people to collaborate with. If this job sounds perfect for you, please apply.

Apply