Assembler Developer with BM z/OS mainframe environments, IRS Core Record Layouts (CRL)

Assembler Developer with BM z/OS mainframe environments, IRS Core Record Layouts (CRL)

Posted 5 days ago by 1750265222

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Negotiable
Outside
Remote
USA
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Assembly Language Automation Bmc Software Change Management Code Conversion Computer Science Control-M (Batch Scheduling Software) Data Manipulation Data Processing Data Store Endevor (Software) Generic Programming IBM DB2 IBM Mainframe IBM Software ICAS Chartered Accountant (CA) Information Systems Java (Programming Language) Job Scheduling (Batch Processing) Lifecycle Management Management Queued Sequential Access Methods Release Management Scheduling Secure Coding Software Development Syntax Version Control Workflow Automation Workflows z/OS

Summary: We are looking for an experienced Assembly Language Developer with expertise in IBM z/OS mainframe environments and IRS Core Record Layouts (CRL). The role involves analyzing and modernizing legacy code, extracting business rules, and collaborating with teams on mission-critical IRS systems. The ideal candidate will have a strong background in assembly language and mainframe architecture, along with experience in job scheduling and version control tools.

Key Responsibilities:

  • Analyze, maintain, and enhance legacy code written in IBM z/OS assembly language.
  • Extract business rules from existing assembly code and assist in code conversion efforts.
  • Work with IRS Core Record Layouts (CRL) and QSAM data formats to support data processing and transformation.
  • Collaborate with cross-functional teams to ensure accurate interpretation and migration of legacy logic.
  • Utilize CA Endevor Software Change Manager (SCM) for version control, release management, and secure code handling.
  • Leverage BMC Control-M for job scheduling, workflow automation, and monitoring batch job execution.

Key Skills:

  • Bachelor's degree in Computer Science, Information Systems, or a related field.
  • In-depth knowledge of IBM z/OS assembly language, including:
  • Assembly instructions, addressing modes, and data manipulation techniques
  • Job control processing and JCL
  • Familiarity with IBM mainframe architecture, including:
  • Storage hierarchy (registers, memory, I/O)
  • System calls (SVCs) and interrupt handling
  • Experience with IRS Core Record Layouts (CRL) and QSAM/VSAM data formats (highly desirable).
  • Experience with IRS IMF or BMF systems (highly desirable).
  • Proficiency with CA Endevor SCM for secure and controlled software development lifecycle management.
  • Experience with BMC Control-M for job automation and workflow orchestration.
  • Strong understanding of mainframe development tools, including debuggers, assemblers, linkers, and utilities.
  • Familiarity with DB2 and other legacy data storage formats.
  • Understanding of Java programming, including:
  • Object-oriented principles, syntax, libraries, and frameworks
  • Ability to map assembly logic to Java constructs (loops, conditionals, functions, design patterns)

Salary (Rate): undetermined

City: undetermined

Country: USA

Working Arrangements: remote

IR35 Status: outside IR35

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

We are seeking a highly experienced Assembly Language Developer with deep expertise in IBM z/OS mainframe environments, IRS Core Record Layouts (CRL), and legacy system modernization. The ideal candidate will support the extraction of business rules from legacy code, assist in code conversion to modern platforms, and work with mission-critical IRS systems such as the Individual Master File (IMF) and Business Master File (BMF).

Key Responsibilities:

  • Analyze, maintain, and enhance legacy code written in IBM z/OS assembly language.
  • Extract business rules from existing assembly code and assist in code conversion efforts.
  • Work with IRS Core Record Layouts (CRL) and QSAM data formats to support data processing and transformation.
  • Collaborate with cross-functional teams to ensure accurate interpretation and migration of legacy logic.
  • Utilize CA Endevor Software Change Manager (SCM) for version control, release management, and secure code handling.
  • Leverage BMC Control-M for job scheduling, workflow automation, and monitoring batch job execution.

Required skills/Level of Experience:

  • Bachelor s degree in Computer Science, Information Systems, or a related field.
  • In-depth knowledge of IBM z/OS assembly language, including:
    • Assembly instructions, addressing modes, and data manipulation techniques
    • Job control processing and JCL
  • Familiarity with IBM mainframe architecture, including:
    • Storage hierarchy (registers, memory, I/O)
    • System calls (SVCs) and interrupt handling
  • Experience with IRS Core Record Layouts (CRL) and QSAM/VSAM data formats (highly desirable).
  • Experience with IRS IMF or BMF systems (highly desirable).
  • Proficiency with CA Endevor SCM for secure and controlled software development lifecycle management.
  • Experience with BMC Control-M for job automation and workflow orchestration.
  • Strong understanding of mainframe development tools, including debuggers, assemblers, linkers, and utilities.
  • Familiarity with DB2 and other legacy data storage formats.
  • Understanding of Java programming, including:
    • Object-oriented principles, syntax, libraries, and frameworks
    • Ability to map assembly logic to Java constructs (loops, conditionals, functions, design patterns)
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