Mainframe Developer

Mississauga, ON
On-site
Posted Oct 16, 2026
1 position

$100,000–$120,000 / year

Opens LinkedIn

Employment type: Full-time
Experience level: Senior · 5+ years
Posting language: English
Working hours: 40 hours per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Design, develop, test, and maintain mainframe applications using COBOL, CICS, JCL, and DB2, including online and batch systems. Analyze requirements, optimize database queries, resolve production issues, support modernization initiatives, and collaborate on testing, documentation, and releases.

Job details

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 continued commitment to Culture and Diversity is reflected in our people stories across our workforce and implemented through equitable workplace policies and processes. TCS has been serving the Canadian marketplace for more than 35 years and today is the technology partner of choice for many of the country's leading organizations. As one of the largest IT services providers in Canada and globally, TCS is aiming to become the world's largest AI-led technology services company and is enabling its clients to transform themselves across the full AI stack, from infrastructure to intelligence. Rooted in the heritage and values of the Tata Group, TCS is focused on creating long-term value for its clients, investors, employees, and the communities it serves. With a highly skilled workforce supporting customers from coast to coast, TCS has consistently been recognized as a Top Employer by the Top Employers Institute, including a recent top ranking at the country level. TCS also sponsors 14 of the world's most prestigious marathons and endurance events, including the TCS Toronto Waterfront Marathon, reflecting its commitment to health, sustainability, and community empowerment. Role Description Design, develop, test, and maintain mainframe applications using COBOL, CICS, JCL, and DB2.Analyze business requirements and translate them into technical specifications. Develop and modify online and batch applications. Create and optimize DB2 SQL queries, stored procedures, and database structures. Perform impact analysis for application enhancements and production issues. Troubleshoot and resolve application defects and performance bottlenecks. Support production systems, incident management, and root cause analysis. Participate in application modernization and migration initiatives. Develop and execute unit, integration, and system testing. Prepare technical documentation, program specifications, and operational procedures. Collaborate with cross-functional teams during project implementation and release cycles. Ensure compliance with organizational standards, security policies, and regulatory requirements. Salary Range - CA$ 100,000 - CA$ 120,000 Per Year TCS 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.

What you’ll do

Requirements

The role calls for mainframe development experience with COBOL, CICS, JCL, and DB2, along with the ability to translate business requirements into technical specifications. It also requires skills in testing, troubleshooting, production support, documentation, and collaboration; no specific education or years of experience are stated.