Senior Back-End Software Engineer

Manulife•Waterloo, ON

1d•CA$113,000 - CA$163,000•Hybrid

About The Position

This role provides the opportunity to lead and shape Manulife’s core mainframe platforms that underpin critical business capabilities. You will drive the design, modernization, and operational excellence of mission‑critical systems, ensuring reliability, security, and scalability while enabling integration with modern digital and cloud ecosystems. The role contributes directly to Manulife’s mission by setting engineering standards, leading complex initiatives, and influencing technical direction across multiple teams.

Requirements

10+ years of hands‑on mainframe engineering experience delivering enterprise‑scale solutions
10+ years of experience with COBOL, DB2, CICS, VSAM, JCL and related mainframe utilities
Experience working with mainframe integration technologies (e.g., z/OS Connect, REST APIs)
Experience supporting production systems and resolving complex incidents in regulated environments
Post‑secondary education in Computer Science, Engineering, or equivalent practical experience

Nice To Haves

Experience leading projects or workstreams across multiple teams or geographies
Exposure to mainframe modernization and hybrid (mainframe + cloud) architectures
Experience with CI/CD practices and automation in a mainframe or multi‑platform environment
Strong understanding of security, data protection, and access controls for sensitive systems
Ability to mentor engineers and influence engineering practices across teams

Responsibilities

Designs, develops, tests, and deploys secure, scalable back‑end components across core mainframe platforms
Translates business and functional requirements into clear technical designs, specifications, and user stories
Builds and maintains integrations between mainframe systems and distributed or cloud‑based services using APIs and messaging patterns
Ensures high availability, performance, and data integrity through optimization of batch, online, and database processing
Leads or contributes to code reviews, production support, and continuous improvement of engineering standards and practices

Benefits

health
dental
mental health
vision
short- and long-term disability
life and AD&D insurance coverage
adoption/surrogacy benefits
wellness benefits
employee/family assistance plans
retirement savings plans (including pension and a global share ownership plan with employer matching contributions)
financial education and counseling resources
paid holidays
vacation
personal days
sick days
full range of statutory leaves of absence