Mainframe Assembler Specialist @ Amdocs

Job Description

We are seeking a highly skilled Mainframe Assembler Specialist to support, maintain, and enhance mission-critical applications running on IBM mainframe systems. The ideal candidate will have deep expertise in IBM High-Level Assembler (HLASM), strong debugging skills using mainframe tools, and experience working in high-performance, legacy systems environments.

Key Responsibilities:

• Develop, enhance, and maintain applications written in IBM Assembler (HLASM).
  
• Analyze and debug complex Assembler code in batch and online (CICS) environments.
  
• Work closely with COBOL and PL/I programs that interface with Assembler modules.
  
• Perform performance tuning and optimization of critical Assembler routines.
  
• Support system-level development tasks, including I/O processing, exit routines, and memory management.
  
• Troubleshoot and resolve production issues in a timely manner.
  
• Document code changes and create/update technical documentation.
  
• Collaborate with cross-functional teams including QA, Systems Programmers, and Application Developers.
  
• Participate in system upgrades, migrations, and disaster recovery testing.
  

Required Skills and Qualifications:

• 5+ years of hands-on experience with IBM Assembler (HLASM) on z/OS.
  
• Strong knowledge of mainframe internals, including registers, macros, linkage conventions, and storage management.
  
• Proficiency with debugging tools such as IBM Debug Tool, IPCS, or Abend-AID.
  
• Familiarity with JCL, TSO/ISPF, SDSF, and other z/OS utilities.
  
• Experience with CICS and/or MVS internals (desirable but not mandatory).
  
• Working knowledge of COBOL, PL/I, or other mainframe languages is a plus.
  
• Ability to analyze complex systems and identify improvement opportunities.
  
• Strong analytical and communication skills.
  
• Bachelor's degree in Computer Science or equivalent work experience.
  

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Keyskills:   Mainframe Assembler JCL Cics Cobol Assembler