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Mainframe Assembler

Synapse Tech Services IncWilmington, DE🇺🇸United StatesPosted 17 Jul 2026

Quick Overview

Work Type
On Site
Level
Mid Senior

Job Description

Please share your resume to Fasi at synapsetechservice dot com

 

Job Title: Mainframe Assembler
Location: Wilmington, DE (No Remote Option)- 100% Onsite (5 Days/Week)
Job Type: Contract

Experience: 10+ Years
Position ID: Mphasis-117486-12-1:

 

Required Skills:

  • IBM Assembler (HLASM) Programming
  • IBM z/OS
  • Mainframe Application Development
  • SDLC
  • Debugging & Troubleshooting
  • Mainframe Performance Tuning
  • Technical Documentation
  • Mainframe System Support
  • JCL
  • COBOL (Preferred)
  • CICS (Preferred)
  • DB2 (Preferred)

Job Responsibilities:

  • Design, develop, code, and test applications using IBM Assembler.
  • Work across all phases of the Software Development Life Cycle (SDLC).
  • Debug and troubleshoot mainframe applications to ensure optimal performance.
  • Develop and maintain technical documentation for assembler programs.
  • Provide technical support for mainframe systems and ensure adherence to coding standards.
  • Optimize application performance and maintain system reliability.
  • Collaborate with system architects, analysts, and cross-functional teams to translate business requirements into efficient low-level machine code.
  • Stay updated with the latest mainframe technologies and assembler programming practices.

Requirements:

  • 10+ years of hands-on experience in Mainframe Assembler programming.
  • Strong expertise with IBM z/OS operating system.
  • Experience with the complete SDLC.
  • Excellent debugging and problem-solving skills.
  • Strong knowledge of mainframe architecture and system programming.
  • Experience with JCL; knowledge of COBOL, CICS, and DB2 is a plus.
  • Excellent communication and documentation skills.

 

 

 

Skills

COBOL
Technical Support

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