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Serigor Inc · Columbia, Maryland
Senior Mainframe Developer
Columbia, MD
Job Type:
Full-Time
Position Overview
We are seeking a Senior Mainframe Developer to support enterprise modernization and transformation initiatives involving complex IBM Mainframe systems.
This role requires deep hands-on expertise in Mainframe technologies, legacy application analysis, modernization strategies, and technical expertise. The ideal candidate will perform assessment and modernization efforts, collaborate with client stakeholders and engineering teams, and support large-scale migration initiatives in enterprise environments.
Key Responsibilities
Analyze, maintain, support, and modernize large-scale Mainframe applications and legacy systems
Work extensively with:
COBOL
JCL and PROCs
CICS
VSAM
DB2
IMS
BMS Maps
Batch processing environments
Perform technical discussions, modernization workshops, and system assessment sessions with client stakeholders
Serve as the primary Mainframe technical POC for modernization activities, dependencies, and integration efforts
Analyze legacy business workflows, application logic, system integrations, and data dependencies
Recommend modernization, migration, remediation, and transformation strategies
Support automated code analysis, remediation, and modernization workflows
Document business rules, technical processes, data mappings, reconciliation logic, and functional behavior
Collaborate with architects, QA teams, DevOps teams, business analysts, and cross-functional engineering teams
Perform source code inventory analysis, dependency mapping, and technical assessment activities
Support reconciliation, validation, testing, and stabilization activities
Assist with enterprise data migration and synchronization initiatives
Troubleshoot production issues, optimize batch workloads, and support application enhancements
Participate in modernization factory workflows, including automated analysis and transformation activities
Prepare technical documentation, modernization artifacts, operational runbooks, and system analysis reports
Provide mentorship and technical expertise to engineering and modernization teams
Required Qualifications
10-15 years of hands-on experience with enterprise Mainframe applications
Strong expertise with:
COBOL
JCL and PROCs
CICS
VSAM
DB2
IMS
BMS Maps
Batch processing systems
Strong understanding of:
Enterprise Mainframe architectures
Transaction processing systems
Batch processing frameworks
Legacy application workflows
Enterprise integration patterns
Extensive experience supporting large-scale legacy modernization initiatives
Experience working with automated code analysis tools, transformation pipelines, and modernization accelerators
Strong client-facing communication and stakeholder management skills
Experience serving as a technical lead on enterprise modernization programs
Strong understanding of enterprise business processes, data flows, and system dependencies
Exposure to:
Distributed systems
APIs and middleware
Hybrid integration architectures
Cloud modernization initiatives
Familiarity with AWS and/or Azure environments
Strong troubleshooting, analytical, and problem-solving skills
Ability to drive technical modernization activities independently and hands-on in fast-paced enterprise environments
Excellent written and verbal communication skills
Preferred Qualifications
Experience supporting enterprise modernization and migration programs
Experience with AI-assisted code analysis and remediation workflows
Experience working with modernization factories, automated conversion tools, and migration accelerators
Experience working in Agile/Scrum delivery environments
Experience supporting government, financial, healthcare, tax, or other large enterprise modernization programs
Familiarity with cloud-native modernization and hybrid cloud integration strategies
Details
| Company | Serigor Inc |
| Location | Columbia, Maryland |
| Type | FULL TIME |
| Niche | Computer and Mathematical Occupations |