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.

• 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.

• 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.

• 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

• 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

• Ensure post-migration:
  • Performance parity or improvement compared to mainframe systems
  • High availability
  • Disaster recovery readiness
• Optimize:
  • Batch processing
  • Scheduling
  • Online transaction processing systems

• Collaborate with:
  • Application teams
  • Cloud engineers
  • Dev Ops teams
  • QA teams
  • Business stakeholders
• Lead:
  • Migration planning
  • Execution activities
  • Testing and validation
  • Cutover and go-live activities

• Define and enforce:
  • Migration standards
  • Migration frameworks
  • Architecture best practices
• Identify:
  • Risks
  • Dependencies
• Implement mitigation strategies throughout the migration lifecycle.

• Drive:
  • Functional testing
  • Integration testing
  • Performance testing
• Support:
  • Cutover execution
  • Hypercare activities
  • Stabilization
• Conduct post-migration optimization and tuning.

• Provide hands-on leadership and guidance to engineering teams.
• Mentor developers on:
  • Mainframe modernization techniques
  • Rehosting tools
  • Cloud adoption strategies

• Strong hands-on experience with:
  • COBOL
  • PL/I
  • Assembler
  • CICS
• Strong knowledge of:
  • JCL
  • IMS
  • DB2
  • VSAM
• Experience with batch and online processing systems.

• Hands-on experience with:
  • Raincode
  • Micro Focus
• Proven experience with mainframe modernization programs.
• Expertise in:
  • Code analysis
  • Code remediation
  • Application dependency mapping

• Strong experience with DB2 to SQL Server migration.
• Deep understanding of:
  • Data transformation
  • Data validation
  • Migration best practices

• Strong experience designing solutions on Microsoft Azure.
• Knowledge of:
  • Hybrid cloud architectures
  • Infrastructure design
  • Cloud security

• Strong hands-on development and troubleshooting experience.
• Ability to:
  • Debug complex legacy systems
  • Resolve migration issues
  • Optimize application performance

• Eztrieve experience.
• Dev Ops tools:
  • Azure Dev Ops
  • Jenkins
  • Git
• Exposure to:
  • Containerization
  • Microservices architectures
• Experience in:
  • BFSI
  • Insurance
  • Enterprise systems
• 10+ years of mainframe modernization and rehosting experience.