> Markdown version of [/jobs/ext/3532746-mainframe-developer](https://www.wearedevelopers.com/jobs/ext/3532746-mainframe-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mainframe Developer - **Company:** Experis - **Location:** Bloomington, IL, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Lifecycle Management, Software Debugging, Mainframes, Data Processing, Git, Control M - **Published:** October 2, 2026 - **Apply:** https://www.experis.com/en/job/413462/senior-mainframe-developer ## About the Role Our client is seeking a Senior Mainframe Developer to join their team. As a Senior Mainframe Developer, you will be part of the technology organization supporting mission-critical health applications. The ideal candidate will have strong Mainframe development expertise, deep Health Insurance domain knowledge (not group health insurance), and the ability to deliver both development and production support in an Agile environment., + Well experienced Health Insurance applications development & support with specific knowledge of Health Insurance (not group health insurance). + Experience working with COBOL, SAS, REXX, and VSAM. + Agile experience, including collaboration and delivery in iterative development cycles. + Knowledge of Web services, REST API, JSON, and Message Queues (MQ); experience with Control-M scheduling and CI/CD pipelines is a plus. ## Description + Design, develop, and support health applications using Mainframe technologies including PL/I, IMSDB, DB2, and JCL. + Provide both development and production support, including debugging and issue resolution in a live environment. + Work hands-on with SAS, REXX, JCL, and Sort to implement and maintain data processing and application logic. + Debug using IDB/IDZ and support reliable deployments by pushing code using Git. + Coordinate activity between Product owners and Business Units to drive open action items to closure. What's Needed? + Very strong experience with PL/I, IMSDB, DB2, JCL, and Sort (10+ years)., + Opportunity to contribute to health-focused Mainframe applications using modern collaboration practices like Git and Agile delivery. + Engage in both development and production support to broaden impact across the application lifecycle. + Work with a team that values coordination with Product owners and Business Units to close action items. + Use hands-on tooling and techniques for debugging and data processing, including IDB/IDZ and Sort. + Clear onboarding expectations, including a required meet and greet for all new hires. If this is a role that interests you and you'd like to learn more, click apply now and a recruiter will be in touch with you to discuss this great opportunity. We look forward to speaking with you! About ManpowerGroup, Parent Company of: Manpower, Experis, Talent Solutions, and Jefferson Wells. ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing, and managing the talent that enables them to win. We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable employment for millions of people across a wide range of industries and skills. Our expert family of brands - Manpower, Experis, Talent Solutions, and Jefferson Wells - creates substantial value for candidates and clients across more than 75 countries and territories and has done so for over 70 years. We are recognized consistently for our diversity - as a best place to work for Women, Inclusion, Equality and Disability and in 2023 ManpowerGroup was named one of the World's Most Ethical Companies for the 14th year - all confirming our position as the brand of choice for in-demand talent. 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 ## Related Videos - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Unlocking the Power of the Mainframe: Developing modern applications on z/OS](https://www.wearedevelopers.com/videos/764-unlocking-the-power-of-the-mainframe-developing-modern-applications-on-z-os) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Brewing Tea over the Internet](https://www.wearedevelopers.com/videos/697-brewing-tea-over-the-internet) - [Cloud as the new mainframe: why the cloud hype does not reflect the dev reality](https://www.wearedevelopers.com/videos/797-cloud-as-the-new-mainframe-why-the-cloud-hype-does-not-reflect-the-dev-reality) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) ## Related Articles - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)