Software Engineer (Mainframe)

Company: UniGroup

Location: Fenton, MO (Remote)

Type: Full-time

Level: mid

Remote: Yes

Posted: 2026-03-01

About this role

**Location:
This position may be based outside of Missouri and is eligible in the following states: Illinois, Arkansas, Florida, North Carolina, Georgia, Texas, Indiana, and Tennessee.


Position Overview
The Software Engineer designs, develops, tests, and supports UniGroup’s core business applications running in a mainframe environment. This role plays a critical part in maintaining and enhancing systems that support order processing, billing, and transportation operations across the organization.


The Software Engineer collaborates closely with other engineers, analysts, and business partners to support daily operations, ensure system stability, and contribute to efforts that reduce reliance on legacy platforms over time. This is a hands-on role well-suited for someone who enjoys working in established systems while supporting modernization through testing, documentation, and technical partnership.


Responsibilities**

  • Design, develop, test, and support software applications within a mainframe environment
  • Write, maintain, and debug COBOL programs supporting core business systems
  • Support CI/CS environments and applications using DB2 as the primary database
  • Utilize JCL and TSO to manage batch processing, job execution, and system operations
  • Use mainframe utilities such as QMF and SCLM to support development, testing, and source control
  • Partner with senior engineers to test, validate, and support work related to mainframe modernization efforts
  • Support production systems, including troubleshooting issues related to order, billing, and transportation systems
  • Participate in code reviews and testing efforts to ensure accuracy, performance, and system reliability
  • Maintain technical documentation and contribute to knowledge sharing within the team
  • Collaborate with cross-functional partners to understand business requirements and translate them into technical solutions
  • Assist in workload balancing by supporting and testing wor...

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