Mississauga, ON | 5 - 18 years of experienceApply By | 21-Jun-2026Job DescriptionEmployment at Tata Consultancy Services (TCS) is an equal opportunity employer, and embraces diversity in race, nationality, ethnicity, gender, age, physical ability, neurodiversity, and sexual orientation to create a workforce that reflects the societies we operate in. Our commitment to culture and diversity is reflected in our people stories and implemented through equitable workplace policies and processes.Core Technical SkillsProgramming Languages: COBOL (primary), Assembler, PL/I, and JCL (Job Control Language).Databases & File Systems: DB2 for z/OS, IMS DB, and VSAM.Transaction Processing: CICS (Customer Information Control System).Environment & Tools: TSO/ISPF, z/OS operating system, REXX, File-AID, and BMC.Debugging & Utilities: RMF, Abend-AID, and system utilities.Functional Design SkillsSDLC Proficiency: Experience in full software development life cycles (SDLC).Documentation: Creating technical and functional design documents, mapping business requirements to technical specs.Performance Optimization: Tuning batch jobs and SQL queries to enhance system performance.Troubleshooting: Solid analytical skills for analyzing logs (SYSOUT), debugging dumps, and resolving production issues.Testing: Developing and executing unit test cases and system integration testing.Application Development: Writing, testing, and debugging applications using languages such as COBOL, JCL, SQL,



and CICS.System Maintenance: Modifying and updating existing software to meet new requirements and improve performance.Database Management: Interacting with databases such as DB2, IMS, or VSAM to manage large data sets.Documentation: Creating technical specifications, user manuals, and documentation for new programs.Troubleshooting: Identifying, analyzing, and resolving technical issues (production support) to prevent system downtime.Collaboration: Working with teams to analyze user needs and deliver integrated IT solutions.Salary RangeCA$ 100,000 - CA$ 130,000 Per YearTCS does not use artificial intelligence tools for candidate screening or evaluation. This post is for a current vacancy. The hiring process includes an initial screening, followed by a technical evaluation and managerial discussion.Tata Consultancy Services Canada Inc. is committed to meeting the accessibility needs of all individuals in accordance with the Accessibility for Ontarians with Disabilities Act (AODA) and the Ontario Human Rights Code (OHRC). Should you require accommodation during the recruitment and selection process, please inform Human Resources.Thank you for your interest in TCS. Candidates that meet the qualifications for this position will be contacted within a 2-week period. We invite you to continue to apply for other opportunities that match your profile.#J-18808-Ljbffr

📌 Mainframe Developer - C$100,000 - C$130,000 A Year (Winnipeg)
🏢 TATA Consultancy Services
📍 Winnipeg