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NTT DATA Logo NTT DATA · IT - Software Development

IBM Z/OS Mainframe Software Specialist

United States, Plano Employment contract 77120.00 - 145240.00 USD / Year · Job Posted June 14, 2026
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Job Description

Provide deep technical expertise across the IBM z/OS mainframe ecosystem, supporting legacy MMIS assessment, reverse engineering, and modernization initiatives. This role focuses on analyzing and stabilizing COBOL-based, DB2/IMS-backed, batch-driven systems, and enabling their transition to a modern, modular MES architecture.

Job Responsibility

  • Provide deep technical expertise across the IBM z/OS mainframe ecosystem, supporting legacy MMIS assessment, reverse engineering, and modernization initiatives
  • Legacy System Analysis
  • Reverse Engineering & Documentation
  • Mainframe Development & Operations
  • Modernization Support
  • Integration & Interfaces

Requirements

  • Minimum 10+ years of experience in IBM z/OS mainframe environments
  • Experience with COBOL (batch and online)
  • JCL (job control, scheduling, troubleshooting)
  • DB2 (SQL, schema design, performance tuning)
  • VSAM/GSAM file systems
  • IMS DB/DC (preferred)
  • Experience with TSO/ISPF, SDSF, and standard mainframe utilities
  • Experience in large-scale transaction processing systems (preferably MMIS or financial systems)
  • Bachelors in computer science or related field

Nice to have

  • Experience with Medicaid/MMIS or healthcare claims systems
  • Exposure to mainframe modernization tools and strategies
  • Familiarity with API enablement of legacy systems
  • Data migration to cloud platforms
  • Understanding of CMS SMC or regulatory environments
  • Project lead experience
  • Strong analytical and reverse engineering capabilities
  • Ability to interpret complex batch workflows and dependencies
  • Collaboration with architects, SMEs, and modernization teams
  • Clear documentation and communication skills

What we offer

  • Medical
  • dental
  • and vision insurance with an employer contribution
  • flexible spending or health savings account
  • life and AD&D insurance
  • short and long term disability coverage
  • paid time off
  • employee assistance
  • participation in a 401k program with company match
  • additional voluntary or legally-required benefits
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