Advanced Mainframe Developer – Composite Reservoir Accounts
Zencon Group · Posted Nov 13, 2026
- Remote, United States
- Remote
- Contract
- 5+ years
Senior Mainframe Developer with 5+ years of Enterprise COBOL and NaturalOne experience, responsible for designing and implementing composite reservoir account structures and supporting related batch processes.
Responsibilities
- Analyze and document existing account master, posting, and balance‑maintenance programs for composite reservoir accounts
- Design and implement a pooled account structure for fund transfers between subsidiary and reservoir accounts
- Develop master file and table structures, account opening/closing processes, and allocation rules
- Integrate new account type into posting, settlement, accrual, reporting, and reconciliation processes
- Create test data and regression test suites, compare parallel‑run results with production output
Requirements
- Degree in computer science or related field
- Nice to have: Treasury or cash management applications
- Nice to have: CA-7 scheduling
- Nice to have: REXX or CLIST
- Nice to have: Python