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Sun Life
Software Engineer (Mainframe)Sun Life • Sun Life Toronto One York
Software Engineer (Mainframe)

Software Engineer (Mainframe)

Sun Life • Sun Life Toronto One York
13 days ago
Job type
  • Full-time
Job description

Job Description

:

We're evolving how we attract and engage with our clients, and as a Mainframe Software Engineer on our team, you'll design, develop, support, and analyze large-scale applications and systems. This is a hands-on role focused on building high-quality solutions while growing your technical depth and contributing to meaningful client experiences.

This role is ideal for an engineer who thrives in a collaborative environment, values learning and continuous improvement, and can adapt to changing priorities while maintaining delivery quality.

Own Your Contributions

  • Break down and analyze application requirements into well-scoped work items
  • Design and develop mainframe applications under the guidance of senior engineers
  • Identify risks and raise them early to protect delivery timelines
  • Make sound technical decisions aligned with team standards and long-term maintainability
  • Contribute to maintaining the health, reliability, and evolvability of existing systems

Build and Learn

  • Contribute to end-to-end application development using modern mainframe tools (IBM IDz, zDevOps, VS Code, Zowe, GitHub Copilot)
  • Write production-quality COBOL code with appropriate testing and documentation
  • Learn and apply lightweight engineering practices that balance speed and quality
  • Stay current with emerging technologies and AI-assisted development tools

Collaborate Effectively

  • Work with peers, senior engineers, and stakeholders to deliver solutions
  • Clearly communicate progress, risks, and trade-offs
  • Contribute to improving client and developer experience through collaboration
  • Share knowledge with peers and contribute to improving team practices and standards

What You Bring

  • 3 - 5 years of experience in mainframe application development
  • Working knowledge of zOS / OS/390 environments
  • Experience with TSO/ISPF, DB2, IMS, JCL, and COBOL
  • Understanding of MQ and middleware concepts
  • Strong problem-solving and communication skills
  • Familiarity with Git, Bitbucket, Jenkins, and zDevOps pipelines is a plus
  • Experience with agile methodologies such as Scrum or Kanban is an asset
  • As this position is posted in several locations, we specify that bilingualism (French, English, both oral and written) is required for Quebec only for the frequent interactions with English and French-speaking colleagues or internal partners across Canada or worldwide.

Product Mindset

  • You think in terms of client and business outcomes
  • You’re comfortable learning through iteration and feedback
  • You value ownership, accountability, and continuous improvement

Why This Role

  • Opportunity to contribute to systems that support clients’ well being
  • Work within a collaborative and inclusive engineering culture
  • Ongoing learning through coaching, training, and hands-on experience
  • Access to modern development tooling and a supportive team environment

Notes / Operational Expectations


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Software Engineer (Mainframe) • Sun Life Toronto One York

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