Description
The Senior Mainframe IBM Assembler (BAL) Developer will support a mission-critical Connex payment switching initiative involving Visa 0120 Automated Fuel Dispenser transactions. The role develops, optimizes, tests, and maintains IBM Mainframe Assembler applications; implements near real-time pre-authorization and transaction-reversal logic; integrates with confirmation-advice messaging; and supports phased delivery and production releases. It is a full-time/contract, 100% remote position requiring 15+ years of IBM Mainframe Assembler experience, extensive Connex payment-platform experience, and strong payment-processing and troubleshooting expertise.
