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Remote Mainframe Developer Jobs in Toronto, ON (NOW HIRING)

Pagefreezer

Senior Software Developer (Remote)

Toronto, ON · Remote

CA$110K - CA$145K/yr

What You'll Do as a Senior Software Developer * Design & Scale Robust Architecture: Develop and ... Remote first environment * "Work from (Almost) Anywhere" policy How We Hire (and How We Use AI): We ...

United Airlines

PD Tool Specialist

Toronto, ON · Remote

CA$62K - CA$147K/yr

At Capgemini Engineering, the world leader in engineering services, we bring together a global team ... Location This is a fully remote role in Canada. About the job you're considering We are seeking an ...

Fidelity International

Software Developer

Toronto, ON · On-site +1

You will be working on a 100% remote schedule as part of Fidelity's dynamic working arrangement. At ... We are looking for a full-stack Software Developer who will take a key role on our team. The ideal ...

Funded.club

Senior Desktop Software Developer

Toronto, ON · Remote

CA$160K - CA$175K/yr

Remote Senior Desktop Software Developer About Sync Sync.com is a leading end-to-end encrypted cloud storage platform operating at significant scale across dual data centers. We build secure, privacy ...

Fortive

Senior Software Developer

Mississauga, ON · On-site +1

As a Senior Software Developer , you'll play a key role in designing and building high-performing ... Flexible remote work options * Generous vacation and paid time off * Comprehensive health, dental ...

Clio

Senior Developer, Enterprise AI

Toronto, ON · Remote

CA$176K - CA$202K/yr

The Senior Developer, Enterprise AI is a hands-on technical leader responsible for building ... This is a new position. #LI-Remote What you will find here: Compensation is one of the main ...

Distributech

Software Engineer

Toronto, ON · Remote

CA$8/hr

As a remote-first organization, we are building a modern, high-performing team focused on ... Experience with Azure DevOps and CI/CD pipelines * Experience developing SaaS applications

InvestorCOM

Software Engineer

Toronto, ON · Remote

As a remote-first organization, we are building a modern, high-performing team focused on ... Experience with Azure DevOps and CI/CD pipelines * Experience developing SaaS applications

InvestorCOM

Software Engineer

Toronto, ON · Remote

As a remote-first organization, we are building a modern, high-performing team focused on ... Experience with Azure DevOps and CI/CD pipelines * Experience developing SaaS applications

Fidelity International

Software Developer

Toronto, ON · On-site +1

CA$101K - CA$118K/yr

You will be working on a 100% remote schedule as part of Fidelity's dynamic working arrangement ... Reporting to the CRM Support Team Manager, the software developer is responsible for development ...

CIBC US

Senior Fullstack Developer

Toronto, ON · On-site +1

... Developer (Full Stack), where you'll play a key role in designing, developing, and enhancing ... site and remote work) will be discussed at the time of your interview How you'll succeed

CIBC

Senior Fullstack Developer

Toronto, ON · On-site +1

... Developer (Full Stack), where you'll play a key role in designing, developing, and enhancing ... site and remote work) will be discussed at the time of your interview How you'll succeed

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All JobsMainframe Developer JobsRemote Mainframe Developer JobsRemote Mainframe Developer Jobs in Toronto, ON

Remote Mainframe Developer information

Is IBM still making mainframes?

IBM continues to manufacture mainframes, such as the IBM Z series, which are widely used in enterprise environments for their reliability, security, and scalability. Mainframes remain a key platform for large-scale data processing and transaction workloads, and many organizations rely on mainframe developers to maintain and upgrade these systems.

What Does a Remote Mainframe Developer Do?

As a remote mainframe developer, you work from home to design, code, test, and configure software and applications used on a mainframe system. Mainframes are large computers with particularly high processing power and are often used for critical tasks like bulk data processing or enterprise resource planning. In this role, you may help ensure all new software is fully backward-compatible, monitor system performance, isolate errors, and work collaboratively with other developers as needed. Most mainframe developers work for larger companies. As a remote employee, you use virtual office software, phone, chat, or email to remain connected to other employees.

What are the key skills and qualifications needed to thrive as a Remote Mainframe Developer, and why are they important?

To thrive as a Remote Mainframe Developer, you need strong programming skills in languages like COBOL, JCL, and experience with mainframe operating systems, often supported by a degree in computer science or related field. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is typically required, along with relevant certifications. Excellent problem-solving abilities, independent work ethic, and effective virtual communication are standout soft skills for this remote role. These skills ensure smooth maintenance, modernization, and support of critical legacy systems in distributed teams.

Is mainframe developer a good career?

A mainframe developer is a skilled IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL. However, it requires specialized skills and ongoing learning to stay current with evolving systems and tools.

Can mainframe be replaced by AI?

Mainframe developers work with large-scale, legacy systems that require specialized knowledge of mainframe architectures, programming languages, and security protocols. While AI can automate certain tasks like code analysis and testing, it is unlikely to fully replace the need for skilled mainframe developers who maintain and optimize critical enterprise systems. AI tools may assist in development, but human expertise remains essential for complex mainframe environments.

How does a Remote Mainframe Developer typically collaborate with on-site teams and manage communication challenges?

As a Remote Mainframe Developer, you'll often work closely with on-site IT teams, business analysts, and project managers through virtual meetings, chat platforms, and shared documentation tools. Effective communication is key, so regular check-ins and proactive status updates help ensure alignment on project goals and troubleshooting efforts. Many companies use agile methodologies, which means you'll likely participate in daily stand-ups and sprint planning sessions remotely. While time zone differences can be a challenge, flexible scheduling and clear communication protocols are common strategies to keep everyone connected and productive.

What is the salary of a mainframe developer?

The salary of a mainframe developer typically ranges from $70,000 to $120,000 annually, depending on experience, location, and certifications. Senior developers with specialized skills in COBOL, JCL, and mainframe tools may earn higher salaries, especially in industries like finance and government that rely heavily on mainframe systems.

What is a Remote Mainframe Developer?

A Remote Mainframe Developer is a software professional who specializes in designing, developing, maintaining, and troubleshooting applications that run on mainframe computers, while working from a remote location. Mainframes are powerful computers often used by large organizations for critical applications, such as transaction processing and bulk data handling. Remote Mainframe Developers use programming languages like COBOL, JCL, and Assembler, and often connect to mainframe systems via secure networks. Their work ensures that legacy systems remain efficient, secure, and up-to-date. This role typically requires strong technical skills, experience with mainframe environments, and effective communication for collaborating with on-site teams.
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Remote Mainframe Developer jobs near you
Infographic showing various Remote Mainframe Developer job openings in Toronto, ON as of July 2026, with employment types broken down into 47% Full Time, and 53% Contract. Highlights an 100% Remote job distribution.

Software Developer, Senior (Remote Canada)

Smile Digital Health

Toronto, ON • On-site, Remote

CA$120K - CA$135K/yr

Other

Medical, Life, Retirement, PTO

Posted 14 days ago

Job description

Working for a company like Smile Digital Health means supporting our mandate for #BetterGlobalHealth. We strive towards this goal every day, and the results can be seen in the impact of our innovative health data platform and data management solutions, which are used in over 20 countries. We were #19 on Deloitte's Technology Fast 50 Ranking for 2024! 
 
Smile Digital Health makes it easy for healthcare stakeholders to collect and exchange data with our leading FHIR-based data liberation platform.
 
At its heart, the Smile platform enables people and organizations to better manage healthcare data. We help generate and liberate structured healthcare data to ensure effective delivery across care teams and health systems bringing  #BetterGlobalHealth to patients everyday!

Apply today and find plenty of reasons to SMILE!

The Senior Software Developer, Support works closely with cross-functional teams to lead the investigation, design, and delivery of solutions for complex client-reported issues and platform enhancements within the Smile Digital Health platform. This role plays a critical part in maintaining highly reliable healthcare systems used in production environments, while driving technical excellence, mentoring team members, and contributing to the long-term stability and scalability of the platform. 

This position works closely with all areas of the business to gather product requirements and design, implement and test components of the system.  This position may include an on-call rotation for complex Tier 2 issue support.

Responsiblities
  • Design, develop, and maintain scalable, reliable, and maintainable software solutions.
  • Lead the investigation and resolution of complex production issues impacting healthcare clients.
  • Working with Tier 1 and Tier 2 support teams to diagnose and correct issues raised in customer incidents.
  • Analyzing solutions to ensure that they will be interoperable, performant and maintainable.
  • Escalate high risk and complex client issues to leaders, as appropriate. 
  • Diagnose and resolve complex, high-priority production escalations that require deep code-level analysis and database inspection.
  • Design, implement, and maintain scalable, reliable, and maintainable software solutions within the Smile Digital Health platform.
  • Drive root cause analysis efforts and implement long-term corrective actions to reduce recurring issues.
  • Identify root causes of systemic software regressions, develop robust code patches, and coordinate with DevOps for hotfix deployments.
  • Provide technical leadership during incident response, troubleshooting, and high-priority client escalations.
  • Review, optimize, and refactor existing systems with a focus on performance, resiliency, and maintainability.
  • Conduct thorough code reviews and forensic log analysis isolate intermittent or hard-to-reproduce bugs.
  • Participate in code reviews, ensuring adherence to engineering best practices and coding standards.
Requirements:
  • 7+ years of professional software development experience. Experience in the healthcare and/or technology industry, preferred. 
  • Post-secondary education in Computer Science, Engineering, Mathematics, or a related field, and/or equivalent working experience.
  • Demonstrated experience and expertise with Java, Spring, SQL, Git, and distributed systems.
  • Proven experience troubleshooting and resolving critical issues in complex production environments.
  • Strong client relationship building skills and abilities to understand client objectives and goals, complex challenges and provide a clear path to resolution. 
  • Strong understanding of software architecture, design patterns, scalability, and maintainability principles.
  • Experience leading technical initiatives and driving projects from requirements through delivery.
  • Ability to analyze ambiguous problems, assess risk, and make sound technical decisions independently.
  • Strong experience with debugging, observability, logging, and monitoring tools.
  • Excellent communication and collaboration skills, with the ability to collaborate effectively across technical and non-technical teams.
  • Demonstrated mentorship and technical leadership experience.
  • Experience working in healthcare technology, HL7, or FHIR is considered an asset.
$120,000 - $135,000 a year
Some of the benefits we offer:
* Remote Work Environment
* Flexible Time Away From Work Policy including PTO, Personal and Sick Days
* Competitive Salary and Health/Medical Benefits
* RRSP/TFSA/401K Employee Contribution
* Life and Disability
* Employee Assistance Program
* FHIR Study Program and Skillsoft Learning
* Super HAPI Fun Club

Smile's core values include respect, inclusion, embracing our differences, and celebrating shared values because our people are the foundation of our success. We are big on creating a sense of belonging and empowering each other to bring our authentic selves to work.  We are dedicated to fostering a workplace that values diversity, equity, and inclusion.
 
We welcome and encourage candidates of all backgrounds to apply. Candidates are encouraged to inform us if they wish to discuss or require accommodations during interviews or while working at Smile.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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