Senior Mainframe Developer Jobs in USA 2026

Skilled in PL/I, DB2, and Health Insurance mainframe systems? A health technology client seeks a Senior Mainframe Developer in Bloomington, Illinois. Several existing visa categories, including H1B and H4 EAD, are accepted. If mission-critical health application support excites you, this role offers genuine technical depth.

About the Role

You will design and support health applications using core mainframe technologies. This includes working with PL/I, IMSDB, DB2, and JCL daily. Additionally, you will provide both development and live production support. You will also debug using IDB/IDZ while deploying code through Git. This role operates within an Agile environment, coordinating closely with Product Owners. A mandatory meet-and-greet is required for all new hires before starting.

About the Hiring Firm

This role is staffed through Experis, part of ManpowerGroup, for an end client working with Capgemini. ManpowerGroup has operated globally for over 70 years, spanning more than 75 countries. It was named one of the World’s Most Ethical Companies for 14 consecutive years in 2023. The actual end client and specific health organisation were not named in the posting. You may want to confirm the final client’s identity directly with the recruiter before publishing.

Job Duties

• Design and support health applications using mainframe technologies
• Provide development and production support, including live debugging
• Work hands-on with SAS, REXX, JCL, and Sort tools
• Debug using IDB/IDZ and deploy code through Git
• Coordinate with Product Owners and Business Units on action items

Job Requirements

• 10+ years of strong experience with PL/I, DB2, and JCL
• Deep knowledge of Health Insurance applications specifically
• Experience with COBOL, SAS, REXX, and VSAM required
• Agile experience within iterative development cycles required
• Knowledge of REST APIs and Message Queues is a plus

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Conclusion

This role suits senior mainframe developers ready for specialised health technology work. With steady contract structure and strong domain focus, the opportunity offers real depth. For experienced mainframe developers seeking healthcare sector work, this position delivers genuine technical scope.

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