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Cobol Mainframe Developer Jobs in Ontario (NOW HIRING)

Senior Mainframe Developer Location: Toronto, ON Work Arrangement: Hybrid-2 Days onsite Employment ... Strong hands-on coding experience in COBOL, CICS, DB2, and JCL for developing and maintaining high ...

Comprehensive experience in mainframe development complex programs using Cobol, JCL, IMS DB, DB2 ... GIT, DevOps pipeline, JIRA, Confluence) Experience with Security and environment control systems ...

... Developer, you will be working in a development and support capacity on our core mainframe cards ... in COBOL, JCL, IMS (DB/Online/Batch), DB2, MQSeries, Git/Endevor and Zeke Nice-to-have:

Strong engineering background delivering enterprise applications, including mainframe solutions ... COBOL, JCL, CICS, DB2, VSAM, and batch processing frameworks. * IMS DB/DC, SAS, CA-7, SQL, IBM OS ...

Senior Software Engineer (Mainframe)

London, ON · On-site

CA$81K - CA$115K/yr

Strong engineering background delivering enterprise applications, including mainframe solutions ... COBOL, JCL, CICS, DB2, VSAM, and batch processing frameworks. * IMS DB/DC, SAS, CA-7, SQL, IBM OS ...

Our technology is primarily hosted on IBM mainframe system utilizing technology stack of Cobol, JCL ... Create and maintain quality code, ensure defect free programming consistent with standards; provide ...

New

TD Bank Group in Toronto, Ontario, is seeking a Senior Manager, Engineering for the Core Platform ... The role requires 10+ years of mainframe design and development experience, proficiency in COBOL ...

New

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 ...

... COBOL, mainframe, transactional systems) and modern technologies (microservices, REST APIs, cloud ... engineers, QE and other relevant stakeholders with ownership mindset driving delivery forward ...

z/OS Connect Systems Programmer

Toronto, ON · On-site

CA$81K - CA$115K/yr

Mainframe & Database Services group within Mainframe Delivery, Infrastructure and Engineering Team ... Programming skills, Assembler and Cobol knowledge is an asset * Exposure to Sysplex, z/OS ...

Software Engineer III

Toronto, ON · On-site

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 ...

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Cobol Mainframe Developer information

See Ontario salary details

$20

$44

$68

How much do cobol mainframe developer jobs pay per hour?

As of Aug 29, 2026, the average hourly pay for cobol mainframe developer in Ontario is $44.75, according to ZipRecruiter salary data. Most workers in this role earn between $36.06 and $52.16 per hour, depending on experience, location, and employer.

What does a COBOL mainframe developer do?

As a COBOL mainframe developer, your primary responsibilities include designing new computer programs using the COBOL programming language. Your duties are to design, develop, and configure code for new programs, test these programs to make sure they function on the intended operating system, and implement adjustments needed. Once that process is complete, you launch the program for public or private use and provide support and upgrades to the user. You should have extensive knowledge and experience working with software development, and if you are working in IT for a company, you should be able to troubleshoot their current mainframe. Teaching others about what you have developed and making sure they understand how to use it are also your responsibility.

What does a COBOL mainframe developer do?

A COBOL Mainframe Developer is responsible for designing, developing, testing, and maintaining applications that run on mainframe computers using the COBOL programming language. These developers often work with legacy systems in industries like banking, insurance, and government, ensuring that critical business processes continue to function smoothly. Their tasks may include writing new code, updating existing programs, debugging, and integrating mainframe applications with modern technologies. COBOL Mainframe Developers also collaborate with business analysts and other IT professionals to meet organizational needs and regulatory requirements.

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

To thrive as a COBOL Mainframe Developer, you need strong proficiency in COBOL programming, mainframe systems (such as IBM z/OS), and a background in computer science or a related field. Familiarity with tools like JCL, DB2, CICS, and source control systems, along with relevant certifications, is highly beneficial. Attention to detail, problem-solving abilities, and effective communication are crucial soft skills for diagnosing issues and collaborating with cross-functional teams. These competencies ensure reliability, accuracy, and efficiency in maintaining and modernizing critical legacy systems.

What are some typical challenges faced by COBOL mainframe developers when maintaining legacy systems?

Cobol Mainframe Developers often encounter challenges with outdated documentation, making it difficult to understand and modify legacy code. Integrating new technologies or adapting legacy systems to modern infrastructure can also be complex, requiring careful planning and testing. Additionally, communicating with business users to gather requirements and ensure system changes meet current needs is essential, as is collaborating with other IT professionals to manage dependencies and minimize downtime. Staying proactive about learning modernization tools and approaches can help address these challenges.

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

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What cities in Ontario are hiring for Cobol Mainframe Developer jobs?

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Infographic showing various Cobol Mainframe Developer job openings in Ontario as of August 2026, with employment types broken down into 38% Full Time, and 62% Contract. Highlights an 85% In-person, and 15% Remote job distribution, with an average salary of $93,080 per year, or $44.8 per hour.

Job description

Job Description:

Mainframe Senior Developer

Location:

Toronto, ON

Working Arrangement:

Hybrid (2 days per week in-person at Toronto office preferred)

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.
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