Full time
KeyBank
United States
Location: 4910 Tiedeman Road, Brooklyn Ohio We are seeking an experienced Mainframe Application Developer with strong expertise in IBM z/OS environments. The ideal candidate will be responsible for designing, developing, maintaining, and supporting mainframe applications, ensuring reliability, performance, and scalability of business-critical systems. Key Responsibilities Design, develop, test, and maintain applications on IBM Mainframe (z/OS platform). Develop and maintain programs using COBOL, JCL, and DB2 (including Stored Procedures) . Work with VSAM datasets , file handling, and performance optimization. Manage and support batch processing schedules using Tivoli Workload Scheduler (TWS) . Perform code management and version control using LCM (or similar tools) . Utilize SORT utilities for data manipulation and processing. Develop and support online and batch applications using CICS . Integrate systems using MQ (IBM WebSphere MQ) for messaging...