Jobs → Engineering → Mainframe Developer

About the Role We are looking for a Mainframe Developer to work on Composite Reservoir Accounts. 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 for application development • Work with Adabas and VSAM databases • Analyze and enhance legacy mainframe applications • Support financial/accounting systems including double-entry posting, balance maintenance, accruals, reconciliation, and month-end closing Requirements • 5+ years of Enterprise COBOL development experience on 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