Sr. Mainframe Rehosting Specialist
Skills
About the role
Inclusion without Exception
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.
Job Description:-
Key Responsibilities
1. Mainframe Rehosting & Modernization
Lead mainframe rehosting initiatives using:
o Raincode (Mandatory)
o Micro Focus (Mandatory)
Define and execute:
o Rehosting (Lift & Shift) strategies
o Replatforming and selective refactoring approaches
Drive mainframe transformation programs (extremely good to have)
Develop modernization roadmaps, timelines, and execution plans
2. Hands-On Application Transformation
Perform deep technical work on legacy systems built with:
o COBOL (Mandatory)
o PL1 (Mandatory)
o Assembler (Mandatory)
o CICS (Mandatory)
Analyze and modernize:
o JCL, IMS, DB2, VSAM-based applications
Good to have: Eztrieve
Execute:
o Code remediation
o Conversion val idation
o Runtime behavior fixes
3. Database Migration & Data Transformation
Lead DB2 SQL Server migration (Mandatory)
Define:
o Data mapping and transformation strategies
o Reconciliation and validation processes
Ensure:
o Data integrity
o Performance optimization
o Minimal downtime during cutover
4. Azure Cloud Enablement
Design and implement Azure-based solutions:
o Compute (VMs, rehosted workloads)
o Networking (VNETs, hybrid connectivity)
o Storage
o Security (RBAC, Key Vault)
Enable integration between:
o Rehosted applications
o Modern cloud services and APIs
5. Performance & Optimization
Ensure post-migration:
o Performance parity or improvement vs. mainframe
o High availability and disaster recovery
Optimize:
o Batch jobs and scheduling
o Online transaction processing systems
6. Migration Delivery & Execution
Work closely with:
o Application teams
o Cloud engineers
o DevOps and QA teams
o Business stakeholders
Lead:
o Migration planning
o Execution
o Testing and validation
o Cutover and go-live
7. Governance, Risk & Best Practices
Define and enforce:
o Migration standards and frameworks
o Architecture best practices
Identify:
o R isks and dependencies
Implement mitigation strategies across the migration lifecycle
8. Testing & Post-Migration Support
Drive:
o Functional, integration, and performance testing
Support:
o Cutover execution
o Hypercare and stabilization
Conduct:
o Post-migration optimization and tuning
9. Mentorship & Technical Leadership
Provide hands-on leadership and guidance to engineering teams
Mentor developers on:
o Mainframe modernization techniques
o Rehosting tools and cloud adoption strategies
Required Skills & Qualifications
Mainframe Technologies (Mandatory)
Strong hands-on experience with:
o COBOL
o PL1
o Assembler
o CICS
Strong knowledge of:
o JCL, IMS, DB2, VSAM
o Batch and online processing systems
Rehosting & Modernization (Mandatory)
Hands-on experience with:
o Raincode (Mandatory)
o Micro Focus (Mandatory)
Proven experience in:
o Mainframe modernization programs (Extremely good to have)
Expertise in:
o Code analysis and remediation
o Application dependency mapping
Database Migration (Mandatory)
Strong experience in:
o DB2 SQL Server migration
Deep understanding of:
o Data transformation and validation
o Migration best practices
Cloud (Azure)
Strong experience designing solutions on:
o Mic
Location
Toronto, ON
Job Function
TECHNOLOGY
Role
Specialist
Job Id
418679
Desired Skills
Mainframe
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