Job Description

Job Summary
Were seeking a highly skilled Senior Assembler Programmer with deep expertise in HLASM development in zOS environments This role supports lowlevel system programming and performancesensitive banking and insurance applications such as transaction authorization batch reconciliation and legacy claim processing
Key Responsibilities
Design develop and maintain HLASM programs interfacing with CICS IMS or batch processes
Reverseengineer legacy assembler code for businesscritical applications eg payment settlement policy adjudication
Optimize lowlevel routines for memory speed and IO in large transaction systems
Analyze and debug system and application abends using IPCS SYSPRINT dumps etc
Create and maintain system exits user exits and assemblerbased subroutines integrated with COBOLPLI programs
Collaborate with Systems Programming DB2IMS teams and Application Development for performance tuning
Ensure compliance with data privacy and security regulations eg PCIDSS HIPAA
Understand mainframe architectures and systemlevel programming concepts to work effectively with the operating system like zOS and hardware
Design optimize and manage Job Control Language JCL for complex batch processing data handling and mainframe utilities
Perform systemlevel debugging troubleshooting and optimization to ensure the stability and performance of Assemblerbased applications and mainframe systems
Work closely with crossfunctional teams including system analysts application developers and operations teams to understand requirements translate them into technical specifications and implement solutions
Create and maintain clear technical documentation including code comments system diagrams and user guides
Provide essential production support for mainframe environments which may include participating in production support rotations diagnosing reproducing and resolving customer issues
Ensure code complies with organizational standards and best practices for security performance and maintainability Adhere to security and control and change control processes
Provide support for batch cycles weekend releases and financial yearend processing
Key Responsibilities
Experience with COBOL or other mainframe languages
Strong working knowledge of IBM MQSeries for messaging and integration
Familiarity with mainframe automation tools or ITIL processes
Exposure to modernization projects eg reengineering or replatforming mainframe workloads
Understanding of Agile methodologies and DevOps for mainframe eg Endevor Git Jenkins for zOS
Knowledge of IBM zOS internals storage and file systems VSAM zFS etc
Experience in Problem diagnosis dump reading and debugging with IPCS a plus
Knowledge of REXX
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