Mainframe Assembler Developer

Expert Technology Services

Foster City, CA

JOB DETAILS
SKILLS
Communication Skills, Compuware XPEDITER, Data Quality, Debugging Skills, Financial Transactions, IBM Mainframe, ISO (International Organization for Standardization), Integration Testing, Large-Scale Systems, Mainframe Computer, Retail, Retail Banking, System Integration (SI), System Migration, Team Player, Technical/Engineering Design, Transaction Processing/Management, Unit Test
LOCATION
Foster City, CA
POSTED
2 days ago
Job Summary (List Format):

- Modify, develop, and optimize Mainframe Assembler (BAL) code for automated fuel dispenser transaction processing.
- Implement real-time logic changes for pre-authorization and transaction amount updates.
- Collaborate with internal teams and Visa to ensure seamless system integration and transaction reversals.
- Debug complex Assembler code using Xpediter and support thorough unit and integration testing.
- Participate in refining technical requirements and translate business needs into technical designs.
- Support phased delivery and ensure code stability and backward compatibility during multi-phase releases.
- Leverage 15+ years of Mainframe IBM Assembler development experience, especially in Connex payment environments.
- Apply strong knowledge of financial transaction messaging and automated fuel dispenser workflows.
- Work effectively in high-volume, near-real-time transaction systems, maintaining data integrity.
- Exhibit excellent collaboration and communication skills with both internal and external stakeholders.
- Preferred: Familiarity with Visa ISO 8583 standards and experience with large-scale system migrations in banking or retail fueling sectors.

About the Company

E

Expert Technology Services