Sr. Mainframe Rehosting Specialist – Mainframe Modernization, Raincode & Azure

Role Overview

• Lead and execute large-scale mainframe modernization and rehosting initiatives.
• Drive end-to-end transformation activities from assessment through migration and post-migration optimization.
• Provide hands-on technical expertise across mainframe technologies, rehosting platforms, and Azure cloud modernization.

Key Responsibilities

Mainframe Rehosting & Modernization

• Lead mainframe rehosting initiatives using:
• Raincode
• Micro Focus
• Define and execute:
• Rehosting (Lift & Shift) strategies
• Replatforming approaches
• Selective refactoring strategies
• Drive mainframe transformation programs.
• Develop modernization roadmaps, timelines, and execution plans. Hands-On Application Transformation
• Perform technical transformation activities on legacy systems built with:
• COBOL
• PL/I
• Assembler
• CICS
• Analyze and modernize applications based on:
• JCL
• IMS
• DB2
• VSAM
• Execute:
• Code remediation
• Conversion validation
• Runtime behavior fixes
• Support Eztrieve-based applications as needed. Database Migration & Data Transformation
• Lead DB2 to SQL Server migration activities.
• Define:
• Data mapping strategies
• Data transformation approaches
• Reconciliation processes
• Validation processes
• Ensure:
• Data integrity
• Performance optimization
• Minimal downtime during cutover Azure Cloud Enablement
• Design and implement Azure-based solutions including:
• Compute (VMs and rehosted workloads)
• Networking (VNETs and hybrid connectivity)
• Storage
• Security controls (RBAC, Key Vault)
• Enable integration between:
• Rehosted applications
• Modern cloud services
• APIs Performance Optimization
• Ensure post-migration:
• Performance parity or improvement compared to mainframe systems
• High availability
• Disaster recovery readiness
• Optimize:
• Batch processing
• Scheduling
• Online transaction processing systems Migration Delivery & Execution
• Collaborate with:
• Application teams
• Cloud engineers
• DevOps teams
• QA teams
• Business stakeholders
• Lead:
• Migration planning
• Execution activities
• Testing and validation
• Cutover and go-live activities Governance, Risk & Best Practices
• Define and enforce:
• Migration standards
• Migration frameworks
• Architecture best practices
• Identify:
• Risks
• Dependencies
• Implement mitigation strategies throughout the migration lifecycle. Testing & Post-Migration Support
• Drive:
• Functional testing
• Integration testing
• Performance testing
• Support:
• Cutover execution
• Hypercare activities
• Stabilization
• Conduct post-migration optimization and tuning. Mentorship & Technical Leadership
• Provide hands-on leadership and guidance to engineering teams.
• Mentor developers on:
• Mainframe modernization techniques
• Rehosting tools
• Cloud adoption strategies Required Skills & Qualifications Mainframe Technologies
• Strong hands-on experience with:
• COBOL
• PL/I
• Assembler
• CICS
• Strong knowledge of:
• JCL
• IMS
• DB2
• VSAM
• Experience with batch and online processing systems. Rehosting & Modernization
• Hands-on experience with:
• Raincode
• Micro Focus
• Proven experience with mainframe modernization programs.
• Expertise in:
• Code analysis
• Code remediation
• Application dependency mapping Database Migration
• Strong experience with DB2 to SQL Server migration.
• Deep understanding of:
• Data transformation
• Data validation
• Migration best practices Azure Cloud
• Strong experience designing solutions on Microsoft Azure.
• Knowledge of:
• Hybrid cloud architectures
• Infrastructure design
• Cloud security Core Engineering
• Strong hands-on development and troubleshooting experience.
• Ability to:
• Debug complex legacy systems
• Resolve migration issues
• Optimize application performance Nice to Have
• Eztrieve experience.
• DevOps tools:
• Azure DevOps
• Jenkins
• Git
• Exposure to:
• Containerization
• Microservices architectures
• Experience in:
• BFSI
• Insurance
• Enterprise systems
• 10+ years of mainframe modernization and rehosting experience.