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.