Mainframe Developer

𝐉𝐨𝐛 𝐓𝐢𝐭𝐥𝐞 : 𝐌𝐚𝐢𝐧𝐟𝐫𝐚𝐦𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐋𝐨𝐜𝐚𝐭𝐢𝐨𝐧 : 𝐑𝐞𝐚𝐝𝐢𝐧𝐠, 𝐏𝐀 𝐨𝐫 𝐀𝐭𝐡𝐞𝐧𝐬, 𝐀𝐋 (𝐖𝐨𝐫𝐤 𝐟𝐫𝐨𝐦 𝐎𝐟𝐟𝐢𝐜𝐞) 𝐃𝐮𝐫𝐚𝐭𝐢𝐨𝐧 : 𝐋𝐨𝐧𝐠 𝐓𝐞𝐫𝐦 𝐂𝐨𝐧𝐭𝐫𝐚𝐜𝐭 𝐉𝐨𝐛 𝐃𝐞𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐨𝐧: 𝐌𝐚𝐢𝐧𝐟𝐫𝐚𝐦𝐞 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 IBM z/OS, OS/390, TSO/ISPF, JES2, SDSF IBM Utilities (REPRO, IDCAMS, IEBGENER, IEBCOPY, IEFBR14) 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬: COBOL, JCL 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: IBM DB2, SPUFI DB2 Utilities (RUNSTATS, REORG, LOAD, UNLOAD) 𝐅𝐢𝐥𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 & 𝐃𝐚𝐭𝐚 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠: VSAM, SyncSort (DFSORT), File-AID, File Master, Sequential Files 𝐉𝐨𝐛 𝐒𝐜𝐡𝐞𝐝𝐮𝐥𝐢𝐧𝐠 & 𝐖𝐨𝐫𝐤𝐥𝐨𝐚𝐝 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: Control-M, Batch Processing, Job Scheduling, Job Monitoring, Job Recovery, Batch Workflow Management 𝐒𝐨𝐮𝐫𝐜𝐞 𝐂𝐨𝐝𝐞 & 𝐂𝐡𝐚𝐧𝐠𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Endevor, Change Control Management, Version Control, Release Management ServiceNow (if used for incident/change management) 𝐃𝐞𝐛𝐮𝐠𝐠𝐢𝐧𝐠 & 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: InterTest, Unit Testing, Integration Testing, Production Validation, Root Cause Analysis (RCA) 𝐃𝐚𝐭𝐚 𝐖𝐚𝐫𝐞𝐡𝐨𝐮𝐬𝐞 & 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬: Teradata, Enterprise Data Warehouse (EDW), Data Validation, Data Reconciliation, Data Quality Assurance (QA) 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐌𝐞𝐭𝐡𝐨𝐝𝐨𝐥𝐨𝐠𝐢𝐞𝐬: Agile, Jira, SDLC, Incident Management, Problem Management, Production Support 𝐂𝐨𝐫𝐞 𝐂𝐨𝐦𝐩𝐞𝐭𝐞𝐧𝐜𝐢𝐞𝐬: Mainframe Production Support (L2/L3) Batch Processing & Automation Incident Resolution & Troubleshooting Performance Monitoring Business Continuity & SLA Management Production Deployments Cross-functional Collaboration Offshore Team Coordination Technical Documentation 𝐑𝐨𝐥𝐞𝐬 & 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬: - Provided L2/L3 production support for mission-critical Enterprise Data Warehouse (EDW) applications running on IBM z/OS and Teradata platforms. - Monitored, managed, and recovered batch jobs using Control-M to ensure successful completion of daily, month-end, and post-month processing within established SLA windows. - Supported enterprise data processing for claims, encounters, pharmacy, member, provider, broker, wellness, and financial data across multiple lines of business. - Developed, modified, and maintained COBOL programs, JCL, DB2 queries, and VSAM file processes to support business and operational requirements. - Performed production incident analysis, troubleshooting, and root cause analysis (RCA), implementing permanent corrective actions to minimize recurring issues. - Executed manual job restarts, dependency management, and batch recovery activities to maintain production availability and data integrity. - Validated production data through reconciliation, QA testing, and business verification to ensure accuracy, completeness, and compliance with reporting requirements. - Utilized TSO/ISPF, File-AID, File Master, SPUFI, InterTest, and SyncSort to analyze datasets, debug application issues, and perform file manipulation. - Managed application code migrations and production deployments using Endevor in accordance with Change Management and SDLC processes. - Collaborated with business users, developers, QA teams, DBAs, and infrastructure teams to resolve production issues and support application enhancements. - Coordinated daily operational activities with offshore teams, including work allocation, knowledge transfer, issue tracking, and status reporting. - Participated in Agile Scrum ceremonies, including sprint planning, backlog refinement, daily stand-ups, retrospectives, and release planning using Jira. - Prepared technical documentation, operational procedures, production support runbooks, and knowledge transfer documents. - Ensured compliance with IT governance, change control procedures, security standards, and audit requirements. - Maintained production stability by proactively monitoring system health, identifying performance bottlenecks, and recommending process improvements. - Supported scheduled maintenance, application releases, disaster recovery activities, and on-call production support for critical business applications.