Jobs → Engineering → Mainframe Developer

About the Role We are looking for a Mainframe Developer specializing in Composite Reservoir Accounts to join our team. This role involves developing and enhancing legacy mainframe applications with a focus on financial and accounting systems. Key Responsibilities • Develop and maintain Enterprise COBOL applications on z/OS • Work with Composite Reservoir Accounts (CRA) systems • Implement and support JCL for production environments • Utilize NaturalOne, Adabas, and VSAM technologies • Analyze and enhance legacy mainframe applications • Ensure double-entry posting, balance maintenance, accruals, reconciliation, and month-end closing processes Requirements • 5+ years of Enterprise COBOL development experience (z/OS) • 3+ years of Composite Reservoir Accounts (CRA) experience • 5+ years of NaturalOne experience • 3+ years of JCL development and production support • 3+ years of Adabas and VSAM experience • Strong financial/accounting systems experience • Experience with double-entry posting, balance maintenance, accruals, reconciliation, and month-end closing Preferred Skills • Cash management, account pooling, and treasury applications • CA-7 scheduling and batch operations • REXX, Python, or Java • IBM MQ, z/OS Connect, or REST integrations