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Mainframe Developer / Senior Developer Job description This is a developer / senior developer position for a skilled Mainframe Developer to design, develop, maintain, and optimize mainframe legacy Banking applications. The ideal candidate should have hands-on experience with COBOL, JCL, VSAM/DB2, and CICS, along with a deep understanding of batch and online processing. The role involves collaborating with cross-functional teams to ensure efficient, scalable, and secure mainframe systems that support critical business functions. Key Responsibilities • Design, develop, test, and maintain mainframe applications using COBOL, JCL, VSAM, DB2, and CICS with Mainframe tools and utilities. • Analyze system requirements and create high-level and low-level technical documents. • Optimize mainframe application performance and troubleshoot issues. • Work with batch processing systems and scheduling tools like TWS/CA-7. • Develop and maintain database objects VSAM/DB2. • Collaborate with business analysts, system architects, and quality assurance teams. Required Skillsets Core Mainframe Technologies • COBOL structured programming • JCL (Job Control Language) • CICS (Transaction management, BMS, pseudo-conversational programming) • Very Good knowledge in CICSPlex development and configuration standards • VSAM (KSDS, ESDS, RRDS datasets) or DB2 (SQL queries, performance tuning) Development Tools & Utilities: • TSO/ISPF (Time Sharing Option/Interactive System Productivity Facility) • File-AID (Data analysis and manipulation) • COBOL Debugging tool – i.e. IBM DEBUG • Abend-AID (Dump analysis and debugging) • IBM Mainframe utilities (IEBGENER, SORT, IDCAMS, etc.) • Backup utilities (IBM-ADRDSSU/FAVER) • File Transmission (Connect Direct – NDM/Network Data Mover) • Batch Scheduling tools (TWS/CA-7) Integration/Security • FIS(Systematics) online framework (TBR/ICR/TCR) • WebSphere MQ (Messaging and inter-system communication) • CICS MRO (Multi-region operation – CICS to CICS communication) • APIs (JSON/REST/SOAP integrations with mainframes via z/OS connect) • RACF (Resource Access Control Facility) Soft Skills & Other Considerations: • Strong analytical and problem-solving skills both batch and online • Strong skills to understand legacy application/architecture and identify impact of proposed changes • Well versed in DevOps practices for mainframe CI/CD pipeline (Bitbucket/Git/Changeman) • Experience / working knowledge of FIS-Systematics banking solution will have an advantage • Domain knowledge of Banking and Financial services industry • Effective communication and documentation abilities • Experience in Agile or Waterfall methodologies