Job location: Columbus, OH or Nashville, TN (both locations would be for on site work)
This role sits at the intersection of legacy system stability and modern platform enablement, where core mainframe applications are being API-enabled and integrated into an AI-driven utility platform. You will play a key role in ensuring that foundational systems are scalable, reliable, and ready to support real-time data access and service exposure.
- Own
and support a core mainframe application (MACSS) across production,
enhancements, and project initiatives
- Develop
and maintain applications using COBOL, JCL, DB2, and CICS
- Troubleshoot
and resolve production issues across batch and online systems
- Collaborate
with API and platform teams to enable integration via z/OS Connect
services
- Support
data flows and service exposure to downstream platforms (APIM, Kafka,
etc.)
- Participate
in system design discussions to support modernization and integration
efforts
- Ensure
performance, reliability, and scalability of legacy systems
This position is critical in enabling the organization’s
transition to a modern, API-driven architecture by ensuring the stability and
scalability of its core legacy systems.
Requirements
- 8+
years of hands-on mainframe development experience
- Strong
expertise in:
- COBOL
- JCL
- DB2
- CICS
- Proven
experience supporting production systems and critical applications
- Experience
working in large enterprise environments (preferably utilities,
banking, or insurance)
- Strong
debugging and problem-solving skills in complex legacy environments
Preferred Qualifications:
- Utilities industry experience.
- Experience
with IBM z/OS Connect
- Exposure
to API enablement of mainframe systems
- Familiarity
with event-driven architectures (Kafka or similar)
- Experience
supporting systems undergoing modernization or digital transformation.
Skills Required
- 8+ years of hands-on mainframe development experience
- Strong expertise in COBOL, JCL, DB2, CICS
- Proven experience supporting production systems and critical applications
- Experience working in large enterprise environments
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