Senior Mainframe Modernization Engineer

Serigor Inc; Columbia (MD); On-site; USD 140,000 - 190,000; Full time

Job summary

Serigor Inc. in the United States seeks a Senior Mainframe Developer to drive modernization of IBM mainframe systems in complex enterprise environments.

You will analyze, design, and implement strategies that transform legacy COBOL/JCL/CICS/VSAM/DB2/IMS workloads, collaborating with stakeholders and engineering teams to deliver scalable migration initiatives. The role requires hands-on expertise, leadership in modernization programs, and the ability to work across architectural and DevOps teams

Qualifications

• 10-15 years of hands-on experience with enterprise Mainframe applications.
• Strong expertise in COBOL, JCL/PROCs, CICS, VSAM, DB2, IMS, and BMS Maps.
• Experience with batch processing systems and legacy workflows.
• Proven ability to lead modernization programs and engage stakeholders.

Responsibilities

• Analyze, maintain, support, and modernize large-scale Mainframe applications.
• Lead modernization workshops and system assessment sessions with clients.
• Serve as primary Mainframe POC for modernization activities and integrations.
• Document business rules, data mappings, and technical processes.
• Collaborate with architects, QA, DevOps, and business analysts on modernization.
• Support data migration, validation, and stabilization activities.
• Troubleshoot production issues and optimize batch workloads.
• Provide mentorship and technical guidance to engineering teams.

Skills

COBOL

JCL/PROCs

CICS

VSAM

DB2

IMS

BMS Maps

Batch processing

Enterprise modernization

Technical leadership

Stakeholder management

Code analysis tools

Tools

Automated code analysis tools

Transformation pipelines

Modernization accelerators

AI-assisted code analysis

Job description

Serigor Inc. in the United States seeks a Senior Mainframe Developer to drive modernization of IBM mainframe systems in complex enterprise environments.

You will analyze, design, and implement strategies that transform legacy COBOL/JCL/CICS/VSAM/DB2/IMS workloads, collaborating with stakeholders and engineering teams to deliver scalable migration initiatives. The role requires hands-on expertise, leadership in modernization programs, and the ability to work across architectural and DevOps teams