Job Title: Mainframe Assembler Developer Location: Foster City, CA/Remote Work Key Responsibilities Core Development: Modify, develop, and optimize low-level Mainframe Assembler (BAL) code to support updates to the 0120 automated fuel dispenser transaction. Real-Time Processing: Implement logic changes to adjust pre-authorization amounts and update real transaction amounts in near real-time. System Integration: Collaborate closely with internal teams and Visa to align client-side changes