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Mainframes Developer Jobs in Ontario (NOW HIRING)

United Airlines

Mainframe Delivery Manager

Toronto, ON · On-site

Key Responsibilities Lead end-to-end mainframe project delivery Oversee COBOL, JCL, DB2-based ... engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data ...

Td

Software Engineer III

Toronto, ON · On-site

CA$125K - CA$154K/yr

Design, develop, test, and maintain applications on Mainframe (e.g., COBOL, JCL, DB2, IMS, SAS) and ... Strong programming expertise in: * Mainframe: COBOL, JCL, DB2, IMS, SAS * AS400: RPG (RPGLE), CL ...

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 ... (DevOps tools and processes, source code management, Service Virtualization, monitoring tools, etc.

Td

Senior IT Build/CICS Programmer

Toronto, ON · Remote

CA$81K - CA$115K/yr

Middleware & Database Technical Services group within Infrastructure & Engineering - Mainframe Delivery is responsible for Support, Design, Build, Test and Deploy of Mainframe Database and ...

Scotiabank

Quality Engineer(Mainframe)

Toronto, ON · Hybrid

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

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Mainframes Developer information

Are mainframe engineers in demand?

Mainframes developers are in steady demand due to the continued use of mainframe systems in industries like finance, government, and healthcare. They require specialized skills in COBOL, JCL, and mainframe environments, and demand often depends on the organization's reliance on legacy systems. While some companies are transitioning to newer technologies, mainframe expertise remains valuable for maintaining critical infrastructure.

What is mainframe developer salary?

The salary for a mainframe developer typically ranges from $70,000 to $120,000 annually, depending on experience, location, and certifications. Skilled developers with expertise in COBOL, JCL, and mainframe environments tend to earn higher salaries, especially in industries like finance and government. Salaries may also vary based on the complexity of projects and the employer's size.

Is mainframe developer a good career?

Mainframe developers work with large-scale computer systems used by many organizations for critical applications. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL. As demand persists in industries such as finance and government, it can be a solid career choice for those with relevant skills and certifications.

Can mainframe be replaced by AI?

Mainframes are large-scale computing systems used for critical enterprise applications, and while AI can automate certain tasks and improve efficiency, it does not replace the core functions of mainframes. Mainframe developers focus on maintaining and optimizing these systems, often integrating AI tools to enhance performance but not replacing the hardware or fundamental role of mainframes in data processing. Skills in legacy systems, programming languages like COBOL, and system security remain essential for mainframe professionals.

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

What are popular job titles related to Mainframes Developer jobs in Ontario? For Mainframes Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Mainframes Developer jobs in Ontario look for? The top searched job categories for Mainframes Developer jobs in Ontario are:
What cities in Ontario are hiring for Mainframes Developer jobs? Cities in Ontario with the most Mainframes Developer job openings:
Mainframes Developer jobs near you
Infographic showing various Mainframes Developer job openings in Ontario as of July 2026, with employment types broken down into 85% Full Time, 3% Part Time, 1% Temporary, and 11% Contract. Highlights an 82% Physical, 3% Hybrid, and 15% Remote job distribution.
Mainframe z/OS System Administrator/Programmer

Mainframe z/OS System Administrator/Programmer

DXC Technology

Toronto, ON

Full-time

Posted 6 hours ago

DXC Technology rating

7.2

Company rating: 7.2 out of 10

Based on 47 frontline employees who took The Breakroom Quiz

122nd of 210 rated it services

Job description

Job Description:

DXC Technology (NYSE: DXC) is a leading enterprise technology and innovation partner delivering software, services, and solutions to global enterprises and public sector organizations - helping them harness AI to drive outcomes at a time of exponential change with speed. With deep expertise in Managed Infrastructure Services, Application Modernization, and Industry-Specific Software Solutions, DXC modernizes, secures, and operates some of the world's most complex technology estates. Learn more on dxc.com.

Mainframe z/OS System Administrator/Programmer

We are seeking an experienced Mainframe z/OS System Administrator/Programmer to support enterprise z/OS environments, including system builds, software installation, upgrades, migrations, and disaster recovery activities.

Key Responsibilities

  • Install and maintain z/OS (MVS) software using SMP/E
  • Perform software packaging, zaps, PTFs, HIPERs, and product upgrades
  • Support Maintenance IPLs, system refreshes, migrations, and CPU swaps
  • Execute LPAR builds, decommissions, and zLinux LPAR creation
  • Perform Disaster Recovery drills and system recovery activities
  • Maintain Coupling Facility / Sysplex, IOGENs, and I/O configurations
  • Manage OMVS / USS / zFS, web server and HTTP activities
  • Update and reassemble system exits
  • Process SMF data and maintain system profiles
  • Apply software license keys and maintain asset records
  • Participate in audits, vulnerability remediation, and change management
  • Provide 24x7 oncall support as part of a rotation

Required Skills

  • Strong experience with z/OS System Programming
  • Expertise with SMP/E, software installation, and maintenance
  • Experience with DR, IPLs, migrations, and hardware refreshes
  • Knowledge of Sysplex, Coupling Facility, IOGENs
  • Familiarity with OMVS / USS / zLinux
  • ITIL processes: Incident, Problem, Change, Asset Management
  • REXX, Assembler, and ISPF dialog scripting experience

Nice to Have

  • zLinux SME experience
  • Large enterprise or regulated environment background

DXC is an equal opportunity employer. We welcome the many dimensions of diversity. Accommodation of special needs for qualified candidates may be considered within the framework of the DXC Accommodation Policy.

In addition, DXC Technology is committed to working with and providing reasonable accommodation to qualified individuals with physical and mental disabilities. If you need assistance in filling out the employment application or require a reasonable accommodation while seeking employment, please e-mail AODA Canada Requests.

Note: This option is reserved for applicants needing a reasonable accommodation related to a disability.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We're committed to fostering an inclusive environment where everyone can thrive.

Recruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf.More information on employment scams is availablehere.

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