Mainframe Developer

Tata Consultancy Services Limited; Mississauga; On-site; CAD 100,000 - 120,000; Full time

Job summary

Tata Consultancy Services Canada Inc. in Mississauga is seeking a Junior Technology Logistics Support Associate to provide day-to-day technical support for technology equipment and systems in the logistics environment.

You will be the first point of contact for IT incidents, assist with system installations, monitor data center infrastructure, and coordinate with internal and third-party teams to maintain inventory and ensure timely resolution.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, Information Systems, or equivalent practical experience.
• Strong hands-on experience with JCL, PL/I, COBOL, CICS, IMS DC/DB, IBM DB2, SQL Server, and REXX.
• Experience in production support, problem determination, defect fixes, and enhancement delivery in a controlled enterprise environment.
• Good understanding of batch processing, online transaction processing, datasets, file structures, job scheduling, and environment promotion.
• Ability to read and analyze legacy code, identify dependencies, and implement safe changes with minimal business disruption.
• Working knowledge of SDLC, change management, release processes, and documentation practices.
• Strong debugging, troubleshooting, and communication skills.

Responsibilities

• Design, develop, enhance, test, and support applications built on IBM mainframe technologies.
• Develop and maintain batch and online programs using COBOL and/or PL/I with JCL-based scheduling and execution logic.
• Work with CICS transaction programs and IMS DC/IMS DB for online and database processing.
• Develop, tune, and troubleshoot DB2-based programs, SQL queries, stored logic, and data access routines.
• Support interfaces or reporting solutions involving SQL Server where required in the application ecosystem.
• Use REXX and related tooling for automation, utilities, diagnostics, and productivity improvements.
• Perform root-cause analysis for production incidents, implement bug fixes, and support release / deployment activities.
• Participate in impact analysis, code reviews, unit testing, system testing support, and documentation updates.
• Collaborate with business analysts, testers, infrastructure teams, and downstream / upstream application teams.
• Contribute to application stability, performance improvements, technical debt reduction, and modernization-readiness activities.

Skills

JCL

PL/I

COBOL

CICS

IMS DC/DB

DB2

SQL Server

REXX

Education

Bachelor’s degree in Computer Science or Engineering

Tools

Mainframe tooling

Job description

Mississauga, ON | 5 - 18 years of experience

Job Description

Inclusion without Exception

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.

Tata Consultancy Services (BSE: 532540, NSE: TCS) is the technology partner of choice for industry-leading organizations worldwide. Since its inception in 1968, TCS has upheld the highest standards of innovation, engineering excellence and customer service.

It has set an aspiration 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 of the Tata Group, TCS is focused on creating long term value for its clients, its investors, its employees, and the community at large. With a highly skilled workforce spread across 56 countries and 194 service delivery centers across the world, the company has been recognized as a top employer in six continents. With the ability to rapidly apply and scale new technologies, the company has built long term partnerships with its clients. Many of these relationships have endured into decades and navigated every technology cycle, from mainframes in the 1970s to artificial intelligence today.

Position Summary - The Junior Technology Logistics Support Associate provides day-to-day technical support for technology equipment and systems within the logistics environment. This role serves as the first point of contact for IT-related incidents and service requests, ensuring timely resolution of technical issues to support business operations. The position also assists with system installations, monitors data center infrastructure, coordinates with internal and third-party support teams, and maintains inventory of technology assets.

Key Responsibilities

• Design, develop, enhance, test, and support applications built on IBM mainframe technologies.
• Develop and maintain batch and online programs using COBOL and/or PL/I with JCL-based scheduling and execution logic.
• Work with CICS transaction programs and IMS DC / IMS DB components for online and database processing.
• Develop, tune, and troubleshoot DB2-based programs, SQL queries, stored logic, and data access routines.
• Support interfaces or reporting solutions involving SQL Server where required in the application ecosystem.
• Use REXX and related tooling for automation, utilities, diagnostics, and productivity improvements.
• Perform root-cause analysis for production incidents, implement bug fixes, and support release / deployment activities.
• Participate in impact analysis, code reviews, unit testing, system testing support, and documentation updates.
• Collaborate with business analysts, testers, infrastructure teams, and downstream / upstream application teams.
• Contribute to application stability, performance improvements, technical debt reduction, and modernization-readiness activities.

Required Qualifications

• Bachelor’s degree in computer science, Engineering, Information Systems, or equivalent practical experience.
• Strong hands-on experience with JCL, PL/I, COBOL, CICS, IMS DC/DB, IBM DB2, SQL Server, and REXX.
• Experience in production support, problem determination, defect fixes, and enhancement delivery in a controlle d enterprise environment.
• Good understanding of batch processing, online transaction processing, datasets, file structures, job scheduling, and environment promotion.
• Ability to read and analyze legacy code, identify dependencies, and implement safe changes with minimal business disruption.
• Working knowledge of SDLC, change management, release processes, and documentation practices.
• Strong debugging, troubleshooting, and communication skills.

Preferred Skills

• Exposure to insurance, banking, or other high-volume regulated enterprise environments.
• Experience with source control, DevOps / deployment tooling, mainframe utilities, and job scheduling products.
• Familiarity with modernization initiatives such as API enablement, data extraction, service integration, or code refactoring.
• Knowledge of performance tuning, data reconciliation, and interface support across distributed systems.

Core Competencies

• Attention to detail in legacy environments
• Problem-solving under production timelines
• Team collaboration and communication
• Quality and risk awareness

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.