Software Engineer; Mainframe

Position: Software Engineer (Mainframe )
You are as unique as your background, experience and point of view. Here, you’ll be encouraged, empowered and challenged to be your best self.

You'll work with dynamic colleagues - experts in their fields - who are eager to share their knowledge with you. Your leaders will inspire and help you reach your potential and soar to recent heights. Every day, you'll have new and exciting opportunities to make life brighter for our Clients - who are at the heart of everything we do. Discover how you can make a difference in the lives of individuals, families and communities around the world.

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, Git Hub 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
Bilingualism (French, English, both oral and written) is required for Quebec for 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
They’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
Occasional off‑hours or weekend support may be required during key production activities; participation in an on‑call rotation may apply.
The Base Pay range is for the primary location for which the job is posted. It may vary depending on the work location of the successful candidate or other factors. In addition to Base Pay, eligible Sun Life employees participate in various incentive plans, payment under which is discretionary and subject to individual and company performance.
Persons with disabilities who need accommodation in the application process, or those needing job postings in an alternative format, may e‑mail a request to
We are proud to be a hybrid organization that offers employees the choice and flexibility to work from both the office and virtually based on the needs of the business, our Clients and you. Several work options are available and can be discussed throughout the selection process depending on the role requirements and individual needs.
We may use artificial intelligence to support candidate sourcing, screening, interview scheduling.
Salary Range: 65,000/65000–105,000/105000
Job Category: IT - Application Development

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