Senior Mainframe Developer; design, develop, test, and implement enterprise mainframe
Job in
Toronto, Ontario, M5A, Canada
Listing for:
S.i. Systems
Contract
position
Listed on 2026-07-18
Job specializations:
-
Software Development
Software Engineer, Backend Developer, Database Engineering
Job Description & How to Apply Below
Position: Senior Mainframe Developer (10+ years of experience) to design, develop, test, and implement enterprise mainframe
Our financial services client is seeking a Senior Mainframe Developer (10+ years of experience) to design, develop, test, and implement enterprise mainframe applications using COBOL, JCL, CICS, VSAM, and SAS
Join a banking technology team supporting mission-critical mainframe applications within a high-volume enterprise environment. This role focuses on end-to-end application development, batch processing, testing, implementation, and production support across mainframe platforms and online transaction processing systems. The position offers exposure to large-scale enterprise systems and opportunities to deepen expertise in mainframe engineering and operational support. The team operates in a collaborative environment supporting both BAU and project-based initiatives.
Contract, Toronto, Hybrid, 2 days in office – Monday and Wednesday
12 months
Must Haves
10+ years in application development across enterprise applications
, mainframe solutions
, batch processing systems
, and online transaction processingHands-on COBOL
, JCL
, CICS
, VSAM
, SAS
, and batch processing frameworksSAS
, CA-7,
IBM OS/, Z/OS
, TSO
, ISPF
, File-aid
, TIBCO
, NDM
, FTP
, Endevor
, Test Sets
, Service NowApplication design
, development
, testing
, implementation
, and production support within enterprise mainframe environmentsUndergraduate degree in Computer Science, Engineering, or equivalent experienceNice to Have
Experience in financial services or Card Payment Network industriesTechnical CertificateResponsibilities
Translate business requirements into technical design documentsDesign, code, integrate, test, debug, and implement mainframe solutionsSupport enhancements, maintenance, and break/fix implementations across source code, JCL, and batch cyclesPerform unit testing, system testing, integration testing, and production implementation activitiesAnalyze production incidents and support recovery and incident resolution activitiesSupport seed testing and production deploymentsProvide day-to-day project status, delivery progress, and risk updates to stakeholders
Position Requirements
10+ Years
work experience
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