Senior Mainframe Developer

Experis Technology Group; Bloomington (IL); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Medical and Prescription Drug Plans

Dental Plan

Vision Plan

Health Savings Account

401(k) with match

Weekly Pay

Job summary

Experis Technology Group seeks a Senior Mainframe Developer for a health-focused mainframe environment in Bloomington, IL. You will design, code, and support critical health applications using PL/I, IMSDB, DB2, JCL, and Sort, while providing production support in an Agile setting.

You will also work with SAS, REXX, JCL, and Sort, debug in live systems, and coordinate with Product owners and Business Units to drive actions to closure.

Qualifications

• Very strong experience with PL/I, IMSDB, DB2, JCL, and Sort (10+ years).
• 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.

Responsibilities

• 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.

Skills

PL/I

IMSDB

DB2

JCL

Sort

COBOL

SAS

REXX

VSAM

Agile

Web services

REST API

JSON

MQ

Control-M

CI/CD

Tools

CI/CD pipelines

Control-M

Job description

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.

Job Title

Senior Mainframe Developer

Location

Bloomington, IL

What's the Job?

• 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).
• 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.

What's in it for me?

• 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.

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

Important Candidate Notes

• Role Name: Senior Mainframe Developer
• Location: Bloomington, IL
• Start date: 2026-10-15
• Background check: MANDATORY
• GTD ID: V9TEKDD
• A meet and greet is required for all new hires due to onboarding requirements.
• Candidates must be willing to go to the closest Capgemini, Client, or onsite location as indicated by the project team to meet with a Capgemini team member prior to starting the assignment. If travel is involved and after selection the candidate declines the offer, costs will be paid by vendor and not Capgemini.

Visa/Eligibility Notes

• External Resource Manager (ERM) | SubCo Staffing Center
• Capgemini North America | Guatemala
• (Only visas accepted are H1B, L2 EAD, H4 EAD, AOS EAD. Permanent residents and green card holders. TN visas only if the contractor lives in US. (if CTH role, only USC and GC holders)