Senior Developer – IBM z​/OS Connect

Our client, a leading organization in the technology and financial services sector, is seeking a dedicated and experienced Senior Developer – IBM z/OS Connect to join their dynamic team. As a Senior Developer – IBM z/OS Connect, you will be an integral part of the mainframe modernization initiatives supporting innovative digital transformation projects. The ideal candidate will demonstrate strong problem-solving skills, effective communication, and a collaborative mindset, which will align successfully within the organization.

Job Title: Senior Developer – IBM z/OS Connect

Location: Columbus, OH or Nashville, TN (both locations require on-site presence)

What's the Job?

• Design, develop, and deploy RESTful APIs using IBM z/OS Connect Enterprise Edition (EE).
• Expose mainframe assets such as CICS, IMS, COBOL, and DB2 as reusable services.
• Create and maintain API specifications using Swagger/OpenAPI standards.
• Develop and support COBOL programs and interface logic to enable API exposure.
• Ensure security, performance, and reliability of mainframe APIs through best practices and troubleshooting.

What's Needed?

• 7+ years of experience in z/OS mainframe development, including COBOL, JCL, and z/OS utilities.
• 3+ years of hands‑on experience with IBM z/OS Connect Enterprise Edition.
• Strong understanding of RESTful API design, JSON data formats, and API lifecycle management.
• Experience with CICS, IMS, DB2, and mainframe security principles such as RACF and TLS/SSL.
• Excellent communication skills and ability to collaborate across technical teams.

What's in it for me?

• Opportunity to work on cutting‑edge mainframe modernization projects.
• Engagement with a forward‑thinking organization committed to innovation.
• Collaborative environment fostering professional growth and development.
• Competitive on‑site work environment in Columbus or Nashville.
• Participation in a diverse and inclusive workplace culture.

Upon completion of waiting period consultants are eligible for:

• Medical and Prescription Drug Plans
• Dental Plan
• Vision Plan
• Health Savings Account
• Health Flexible Spending Account
• Dependent Care Flexible Spending Account
• Supplemental Life Insurance
• Short Term and Long Term Disability Insurance
• Business Travel Insurance
• 401(k), Plus Match
• Weekly Pay

Manpower Group is committed to providing equal employment opportunities in a professional, high quality work environment. It is the policy of Manpower Group and all of its subsidiaries to recruit, train, promote, transfer, pay and take all employment actions without regard to an employee's race, color, national origin, ancestry, sex, sexual orientation, gender identity, genetic information, religion, age, disability, protected veteran status, or any other basis protected by applicable law.