Mainframe Technical Lead

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.

"Skills and responsibilities:

Required Skill Set:

• Mainframe Application Analysis Migration
• Analyze COBOL programs, copybooks, and batch flows to identify migration complexity, dependencies, and refactoring needs.
• Remediate code for compatibility with target platforms (e.g., zOS to cloud-hosted services, replat form to emulation, or rewrite).
• Document current state and design future-state architectures for application components and batch processes.
• Database Data Migration (DB2)Evaluate DB2 schema, stored procedures, and SQL optimize queries and plan migration to cloud databases (e.g., Amazon RDSAurora, Azure SQL, Cloud SQL).
• Define data mapping, cleansing, and validation rules perform cutover planning and reconciliation for high-availability workloads.
• Batch Orchestration (JCL)Assess and refactor JCL streams, utilities, and scheduler integrations (e.g., Control-M) for cloud or hybrid execution.
• Create runbooks and fallback procedures for batch cycles, including error handling, logging, and rerun strategies.
• Testing Quality Assurance Build unit, integration, and regression test suites ensure functional parity and performance SLAs post-migration.
• Establish test data strategies and coordinate UAT with business stakeholders.
• Performance, Reliability Operations Profile performance bottlenecks tune COBOLDB2 interactions and batch schedules for cloud targets.
• Define observability (logs, metrics, traces) and implement operational dashboards alerts.
• Risk Compliance ensure alignment with BFSI regulatory controls (PIIPCI, data residency, audit trails).
• Participate in security reviews, encryption key management, and access control hardening.
• Collaboration Delivery Work cross-functionally with Cloud Architects, Data Engineers, Security, and Business SMEs.
• Contribute to migration waves, release planning, and change management documentation.
• Required Qualifications712 years of hands-on experience with COBOL, DB2 for zOS, and JCL (including utilities like DFSORT, IDCAMS, IEBCOPY, BMCIBM tools).
• Strong understanding of mainframe batch processing, VSAM, file transfers (SDSFFTPSFTP), and job scheduling (e.g., Control-M, CA-7).
• Experience in application assessment and migration from mainframe to cloud hybrid architectures.
• Expertise in SQL tuning and DB2 performance (EXPLAIN plans, indexes, statistics, commit strategies).Solid practices in SDLC, version control, CICD, and testing for legacy modernization.
• Excellent communication skills with ability to translate technical findings into business impacts.
• Nice-to-Have (Preferred)
• Exposure to cloud platforms (AWSAzureGCP) and migration tools (e.g., Micro Focus, Modern Systems, IBM zOS Connect, IDzRDz).
• Knowledge of API enablement for mainframe services (RESTJSON via zOS Connect, MQ).
• Experience with data replication and CDC tools (Q Replication, IBM InfoSphere, AttunityCDC).
• Familiarity with DevOps for legacy workloads, Infra-as-Code (Terraform), and containerization concepts.

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.

Location Toronto, ON Job Function TECHNOLOGY Role Engineer Job Id 413617 Desired Skills JCL \| SQL \| API(Application programming interface) \| COBOL DB2 \| French Translator \| Mainframe