Mainframe Developer/Tester - Columbus - United Software Group Inc

    United Software Group Inc
    United Software Group Inc Columbus

    12 hours ago

    Technology / Internet
    Description

    Role: Mainframe Developer/Tester

    Location: Columbus, OH (Hybrid)- 3days office

    Job Description:

    Mainframe Developer/Tester role (primarily development with some testing experience). This will be a hybrid position based in Columbus, OH.

    Key Responsibilities

    Design, develop, enhance, and maintain COBOL applications running on IBM Mainframe platforms.

    • Develop and support online and batch applications using CICS, JCL, and VSAM.
    • Create, modify, and optimize batch jobs using JCL, SORT, and utilities.
    • Work with VSAM datasets and flat files, including file layouts, access methods, and performance tuning.
    • Use SCLM for source control, versioning, and promotion across environments.
    • Interact with schedulers (CA7) to design, troubleshoot, and optimize batch job flows.
    • Support file processing and analysis using tools such as File Manager.
    • Perform impact analysis, root cause analysis, and production support for mainframe applications.
    • Collaborate with architects, business analysts, and upstream/downstream teams to deliver high-quality solutions.
    • Follow enterprise coding standards, documentation practices, and change management processes.
    • Perform unit testing, system testing, and integration testing for mainframe applications.
    • Develop and execute test cases for COBOL, CICS, and batch programs.
    • Validate data integrity across files, VSAM datasets, and interfaces.
    • Identify, analyze, and resolve defects; work closely with QA and business teams for issue resolution.
    • Support production validation, regression testing, and post-implementation verification.

    Required Skills & Experience

    Technical Skills

    • IBM Mainframe Environment
    • COBOL (Strong, hands-on)
    • CICS (Online transaction processing)
    • JCL (Batch job creation and support)
    • VSAM (KSDS, ESDS, RRDS)
    • Scheduler: CA7
    • SCLM (Source Code Library Manager)
    • SORT utilities
    • File Manager
    • MQ (Low to basic working knowledge)
    • REXX (Nice to have)

    Experience

    • 8+ years of experience in mainframe application development and support
    • Strong experience working in large-scale enterprise systems
    • Proven ability to work independently on complex modules and production issues
    • Experience supporting mission-critical applications with high availability requirements
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