Senior Software Developer - Back End

Are you a Software Developer with deep expertise in PL/I and large-scale legacy systems? Our client is seeking a Software Developer – Back End with hands-on experience in mainframe application development using PL/I, DB2, and IMS DB. You will support mission-critical transaction systems, perform code analysis, develop new solutions, and ensure integration with mid-tier platforms.
This is a hybrid contract role based in Toronto , requiring 3 days per week on-site. The contract runs for approximately 4 months, with one potential extension (up to 93 days). You will be responsible for delivering robust backend logic while ensuring optimal system performance and reliability across Ontario’s large-scale legacy platforms.

Advantages
Hands-on involvement in high-impact public sector initiatives
️ Work on mission-critical legacy systems supporting millions
Collaborate with senior system architects and technical leads
Hybrid flexibility – mix of remote and on-site work