ITTConnect

Senior Developer – IBM z/OS Connect

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


ITTConnect is seeking a

Senior Mainframe Developer - IBM zOS
Connect

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)


We are seeking a Senior Developer with strong expertise in

IBM z/OS Connect

to support Gigawatt.ai modernization initiatives by designing and building new z/OS-based services integrated with MACSS (legacy utility management mainframe application). This role focuses on exposing mainframe capabilities as modern APIs and enabling seamless enterprise integration.


Key Responsibilities

:


  • Design, develop, and deploy RESTful APIs using

    IBM z/OS Connect

  • Build and expose mainframe services (CICS, IMS, DB2) to distributed systems

  • Integrate z/OS services with

    MACSS

    and other enterprise platforms

  • Translate business requirements into scalable API-based solutions

  • Ensure performance, security, and reliability of z/OS services

  • Collaborate with cross-functional teams (middleware, integration, application teams)

  • Troubleshoot and resolve issues across z/OS and API layers

  • Support modernization initiatives by enabling API-driven mainframe access


Requirements


  • Strong hands-on experience with

    IBM z/OS Connect (EE preferred)

  • Solid background in

    z/OS environment

    (CICS, IMS, DB2)

  • Experience building and consuming

    REST APIs

  • Knowledge of

    JSON, OpenAPI/Swagger

  • Familiarity with

    mainframe integration patterns

  • Strong debugging and performance tuning skills on z/OS

  • Experience working in enterprise, high-availability environments


Nice to Have:


  • Experience with

    API management tools

    (e.g., IBM API Connect)

  • Exposure to

    middleware/integration platforms

  • Understanding of

    security protocols

    (OAuth, JWT, RACF)

  • Prior experience with

    legacy system modernization initiatives
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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