Position Title: Mainframe Developer
Location: Westlake, TX & Jersey City, NJ (Hybrid)
Duration: 6+ Months Contract
Job Description:
Core Responsibilities Application Development and Engineering: Design, write, test, and implement complex, highly secure batch and online programs utilizing enterprise COBOL within IBM zOS environments.
Transaction Processing CICS: Architect and optimize online CICS applications to ensure ultra-low latency, optimal screen data layouts, high-volume throughput, and robust error-handling protocols.
Database Management DB2: Design efficient relational tables, write high-performance embedded SQL statements, and optimize DB2 stored procedures, indexes, and queries to eliminate processing bottlenecks.
Batch Architecture and JCL: Manage, write, and optimize complex JCL (Job Control Language) streams, utilities (IEBGENER, IDCAMS, SORT), and automated batch scheduling systems.
Performance Tuning and Debugging: Perform advanced root-cause analysis, system tracing, and performance tuning using tools like Dump Analysis, Xpeditor, InterTest, or File-AID to maintain high availability.
Systems Integration and API Enablement: Partner with Cloud and Integration Architects to expose core mainframe data and transactional logic to modern RESTful APIs via zOS Connect or MQ Series.
Technical Stewardship: Define and enforce coding standards, lead rigorous code reviews, and maintain comprehensive documentation for legacy architectures.
Required Technical Stack and Experience:
Experience: 8 plus years of professional experience in IBM Mainframe software engineering.
Proven track record in high-volume, transactional environments e.g., Financial Services, Healthcare, Logistics, or Insurance.
Skill Matrix Domain Required Tooling and Concepts:
Languages: Enterprise COBOL, JCL, Embedded SQL, Assembler/EZTrieve is a plus
Online Processing: CICS BMS Maps, TS/TD Queues, Program Control, Intercommunication
Data Management: DB2 Relational design
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