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# Mainframe Software Development Engineer

- **Company:** Fiserv, Inc.
- **Location:** United States
- **Salary:** $109,000.0 - $182,400.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Software Applications, Application Performance Management, JIRA, CLIST, COBOL (Programming Language), IBM DB2, Software Debugging, Endevor, Job Control Language (JCL), IBM Mainframe, Rexx (Programming Language), Integrated Development Environments, Mainframes, Software Architecture, Software Engineering, System Testing, Virtual Storage Access Methods, Transaction Processing (Computing), Tso/ispf, Building Management System (BMS), Solid Principles, Software Version Control
- **Published:** August 19, 2026
- **Apply:** https://www.dice.com/job-detail/dd456075-c74b-40b2-9198-6b93379b8788

## About the Role

* 5+ years of experience with COBOL, DB2, BMS Maps, VSAM, JCL and IBM Utilities.
 * 5+ years of experience with IBM Mainframes and the TSO/ISPF development environment.
 * 5+ years of experience with Endevor or a similar source control application.
 * 5+ years of experience in software design principles and software architecture.

What would be nice to have?

 * 2+ years of experience with PEP+ Mainframe ACH Software.
 * 1+ year of experience with Agile or Kanban development methodologies and JIRA.
 * 1+ year of experience with IBM DEBUG, File Manager, CLIST or REXX in high-volume transaction processing or financial services environments

## Description

A successful Mainframe Software Development Engineer at Fiserv designs, develops and maintains high-quality software applications that support business goals and client needs. They work across teams to turn business requirements into technical solutions, while ensuring application performance, reliability and architectural alignment. They also strengthen team delivery by maintaining existing applications, supporting defect analysis and mentoring developers through peer reviews and technical guidance.

What you will do?

 * Lead the design, development and implementation of mainframe software applications that support business goals and client needs.
 * Collaborate with architects, team leads, business analysts and cross-functional partners to gather requirements, translate them into technical specifications and validate design understanding.
 * Develop, code, test and debug applications that meet design and architectural requirements, support system testing and ensure reliable performance.
 * Enhance and maintain existing application software, assess the impact of changes across the application, lead peer reviews and provide ongoing support for internally developed applications.
 * Communicate development status regularly, mentor junior developers and assist the production support team with defect analysis.


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