MainframeMaster

Software Development Senior Specialist

NTT DATA
Full-time
guadalajara, JAL, MX
6 views
Posted August 27, 2026

Job Description

Hands-on development experience in Mainframe support L2 with strong expertise in mainframe application maintenance. 6-8 overall Software experience Strong in Mainframe The ideal candidate will have hands-on experience in COBOL, JCL, DB2, and VSAM, along with solid analytical and debugging skills. The role involves enhancing, supporting, and modernizing mainframe-based applications in a high-availability enterprise environment. Roles and Responsibilities 1. Application Development & Enhancement Design, code, test, and implement COBOL programs in a Mainframe (z/OS) environment. Develop and maintain batch and online applications using COBOL, JCL, DB2, and CICS. Work on change requests, new enhancements, and production defect fixes. Ensure compliance with coding standards, performance optimization, and quality guidelines. 2. Database and File Management Write efficient SQL queries and embedded DB2 SQL within COBOL programs. Work with VSAM files, sequential datasets, and data manipulation utilities. Analyze performance issues related to I/O, indexes, and locking mechanisms. 3. Analysis & Documentation Understand business requirements, prepare technical design documents (TDD) and impact analysis. Participate in code reviews, peer testing, and QA coordination. Maintain version control and deployment documentation using tools such as Endevor, Changeman, or Serena. 4. Collaboration & Communication Work closely with business analysts, testers, and project managers to ensure timely delivery. Provide knowledge transfer (KT) and mentoring for junior developers. Participate in agile ceremonies or waterfall review cycles based on project methodology.

Requirements & Skills

Technical Skills Required Category:-Technologies / Tools Programming Languages: COBOL, JCL, CICS Databases-DB2, VSAM Operating System-IBM z/OS, MVS Utilities / Tools-File-Aid, Abend-AID, Expeditor, QMF, SPUFI Job Scheduling-CA7, Control-M (or equivalent) Version Control-Endevor, Changeman, Serena Debugging & Monitoring-Xpediter, Abend-AID, ISPF, SDSF Additional (Good to Have)-REXX, Easytrieve, MQ, API Integration basics Soft Skills Strong analytical and debugging ability. Excellent communication and documentation skills. Ability to work independently and in cross-functional teams. Strong customer focus and ownership mindset for production stability. Experience working in agile or ITIL-based environments

How to Apply

Apply directly through the application link above