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Mainframe Assembler (HLASM) Developer

📍 Location
toronto
⏰ Job Type
Full-time
📅 Posted
May 27, 2026

About the Role

Skills

Agile Way of Working

Mainframe DB2 - Application Development Experience Required: 4‑6 years

Retirements - Smartcomm Developer (Desirable)

A mainframe developer with strong IBM Assembler (HLASM) skills is a specialist responsible for developing, maintaining, and modernizing critical, low‑level enterprise applications that require precise control and high performance. This role often involves supporting legacy systems in core industries such as banking and finance.

Role Descriptions

Development and Maintenance – Creating, enhancing, and maintaining mainframe applications using Assembler, often in conjunction with other languages such as COBOL, CICS, PLI, and JCL.

Debugging and Issue Resolution – Performing active debugging, performance tuning, and issue resolution using specialized tools such as IBM Debug Tool, Fault Analyzer, and IPCS to analyze dumps and logs.

System Programming – Working with MVS supervisor...

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