Lead/Senior Mainframe Developer (Assembler)

Apex Systems • Toronto, Ontario • Posted March 23, 2026

Position Overview

Job#: 3022722
Job Description:
Lead/Senior Mainframe Developer
Apex Systems is a global IT services provider and our staffing practice has an opening for a Lead/Senior Mainframe Developer to place at our client, a top Canadian Bank under the Personal & Business Banking portfolio.
Client: A Top Canadian Bank
LOB: Personal & Business Banking
Terms: 6-monthContract to start, subject to extensions (mutli-year)
Location: Hybrid 2+ days a week Downtown Toronto
Some Specific Functions of This Role:
Lead projects through all SDLC stages, coaching more junior staff, ensuring the bank's code standards are maintained
Work on complex projects impacting core banking operations
Provide senior level technical analysis and support for E2E project teams
Support on-call as needed
Qualifications:
In-depth knowledge of core banking processi...
        