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Req ID: 371888 

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.

We are currently seeking a IBM z/OS mainframe Software Specialist to join our team in Plano, Texas (US-TX), United States (US).

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.

Day to Day Job Duties:

Legacy System Analysis

• Analyze end-to-end mainframe application landscape, including COBOL programs (online and batch) DB2, IMS databases.VSAM/GSAM file structures
• Understand system flows across claims processing, Financial transactions Interfaces and  batch cycles
• Perform code and job flow walkthroughs to document current-state architecture

Reverse Engineering & Documentation

• Extract and document Business rules and processing logic,Claims edits, pricing, and adjudication workflows.Data models and file structures (DB2 tables, VSAM datasets)
• Create Functional specifications ,Data flow diagrams ,Interface and dependency mappings

Mainframe Development & Operations

• Develop, maintain, and troubleshoot COBOL programs (batch and online) JCL scripts for job execution and scheduling.
• Work extensively with DB2 (SQL, stored procedures, performance tuning)
  • IMS DB/DC (transactions, hierarchical databases)
  • VSAM/GSAM (file handling and access methods)
• Utilize tools such as TSO/ISPF, SDSF, File Manager, Debugger

Modernization Support

• Support transformation initiatives by Identifying candidates for refactor, replatform, or  rewrite
  • Mapping legacy logic to modern services and APIs
• Assist in Data migration (DB2/VSAM → cloud databases)
  • Batch-to-real-time processing transition
• Collaborate with architects on Strangler Fig implementation

 Integration & Interfaces

• Analyze and support integrations using IBM MQ Series ,SFTP / batch file transfers      

External interfaces and EDI pipelines

• Document upstream/downstream dependencies across MES modules

Basic Qualifications:

•              Minimum 10+ years of experience in IBM z/OS mainframe environments

•              Experience with:

           o    COBOL (batch and online)

o    JCL (job control, scheduling, troubleshooting)

o    DB2 (SQL, schema design, performance tuning)

o    VSAM/GSAM file systems

o    IMS DB/DC (preferred)

•              Experience with:

o    TSO/ISPF, SDSF, and standard mainframe utilities

•              Experience in large-scale transaction processing systems (preferably MMIS or financial systems)

Preferred Qualifications:

•              Experience with Medicaid/MMIS or healthcare claims systems

•              Exposure to mainframe modernization tools and strategies

•              Familiarity with:

o   API enablement of legacy systems

o  Data migration to cloud platforms

•              Understanding of CMS SMC or regulatory environments (nice to have)

•              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

Bachelors in computer science or related field

Where required by law, NTT DATA provides a reasonable range of compensation for specific roles. The starting pay range for this role is $77,120– $145,240. Actual compensation will depend on a number of factors, including the candidate’s relevant experience, technical skills, and other qualifications. This position may also be eligible for incentive compensation based on individual and/or company performance. This position is eligible for company benefits including 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, and additional voluntary or legally-required benefits.

About NTT DATA

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us.

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