Design and modernize IBM z/OS applications as a Senior Software Engineer in Waterloo, Ontario, using COBOL and enterprise mainframe expertise in a hybrid setting.

Manulife’s Affinity Life technology team needs an experienced engineer for mission-critical enterprise applications. You will develop with COBOL, JCL, DB2, CICS, and IBM z/OS while supporting production systems. The work connects established mainframe technology with APIs, automation, DevOps, and modernization.

Key Responsibilities:

- Design, develop, unit test, and integrate mainframe application enhancements
- Build solutions using COBOL, JCL, DB2, CICS, and z/OS
- Troubleshoot production issues and improve reliability, security, and performance
- Lead technical designs for complex backend and mainframe solutions




- Mentor engineers through guidance, reviews, and knowledge sharing

Requirements:

- Significant experience supporting enterprise-scale mainframe applications
- Robust COBOL, JCL, DB2, CICS, and IBM z/OS knowledge
- Experience with VSAM or related mainframe data technologies
- Production troubleshooting, performance tuning, and root-cause analysis experience
- Experience with Agile, source control, CI/CD, and software delivery

Apply senior mainframe engineering, COBOL development, and production support expertise to Manulife’s Affinity Life applications.

📌 Senior COBOL Mainframe Engineer (London)
🏢 Manulife
📍 London