ITTConnect

Senior Mainframe Developer (zOS)

ITTConnect  •  Columbus, OH (Onsite)  •  1 month ago
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Job Description


ITTConnect is seeking a

Senior Mainframe Developer (zOS
Environment)

to
work on site for a client in the Columbus, OH area. This is a contract position with a client that is a global leader in consulting,
digital transformation, technology and engineering services with over 300,000
team members in nearly 50 countries. The end client is in the Utilities sector.


Job location

: Columbus, OH or Nashville, TN (both locations would be for on site work)


The

Senior Mainframe Developer

will support a critical legacy platform (MACSS) within a large-scale modernization
initiative. This role is key to stabilizing and enhancing the core mainframe applications while enabling integration with modern API and event-driven
platforms.


You will play a pivotal role in supporting production
systems, delivering enhancements, and ensuring seamless integration with

z/OS
Connect-based services

as part of a broader digital transformation program.


Key Responsibilities

:


  • 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

Why This Role Matters


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.
ITTConnect

About ITTConnect

ITTConnect is an MBE certified provider of IT Recruiting and Staffing services focused on finding the best IT talent nationwide and nearshore in Latin America.

Since 2017 we have assisted companies from multiple industries and sizes to reach their recruitment objectives through flexible and tailored recruiting and staff augmentation services.

Through a network of specialized IT recruiters we efficiently connect employers to top IT professionals.

We are IT experts connecting IT talent with your IT team.

Connect with us at info@ittconnect.com

Share your resume with resume@ittconnect.com

Industry
HR & Recruiting
Company Size
11-50 employees
Headquarters
Fort Lauderdale, FL
Year Founded
2017
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