Software Engineer – Mainframe

Sun Life

Mainframe Software Engineer at Sun Life working on large-scale application development and system analysis. Collaborating with teams to enhance systems supporting clients' well-being.

Posted 6/5/2026full-timeToronto • 🇨🇦 CanadaMid-LevelSenior💰 CA$65,000 - CA$105,000 per yearWebsite

Tech Stack

Tools & technologies

Jenkins

About the role

Key responsibilities & impact

Design, develop, support, and analyze large-scale applications and systems
Break down and analyze application requirements into well-scoped work items
Identify risks and raise them early to protect delivery timelines
Write production-quality COBOL code with appropriate testing and documentation
Collaborate with peers, senior engineers, and stakeholders to deliver solutions

Requirements

What you’ll need

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
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 only

Benefits

Comp & perks

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

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

COBOLmainframe application developmentzOSOS/390TSOISPFDB2IMSJCLagile methodologies

Soft Skills

collaborationrisk identificationcommunication