Full Time

Mainframe Modernization Architect

Posted by CGI • Toronto, Ontario, Canada

📍 Toronto, Ontario 🕒 March 01, 2026

About the Role

Position Description:

The Mainframe Modernization Architect is a strategic technology leader responsible for defining and driving end‑to‑end modernization of legacy mainframe applications, platforms, and data ecosystems.

Your future duties and responsibilities:

- Lead end‑to‑end modernization of mainframe applications and data (COBOL, PL/I, CICS, IMS, DB2, MQ, JCL) into cloud, hybrid, distributed, or re‑platformed architectures.
- Define modernization strategies (rehost, replatform, refactor, rewrite, replace, encapsulate) aligned to business goals and risk appetite.
- Develop phased migration roadmaps, dependency mapping, and cutover models (strangler fig, blue/green, parallel run).
- Design target-state architectures for applications, data, integration, and observability across mainframe + cloud.
- To create and present solution, Lead proposal to completion
- Establish domain decomposition, API and event-driven s...

Ready to Apply?

Submit your application today and take the next step in your career journey with CGI.

Apply Now