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🚀 Freelance Opportunity: Mainframe Assembler Programmer (100% Remote)

Industry: Software | Location: Remote | Type: Freelance Contract


We're looking for an experienced Mainframe Assembler Programmer to join a high-impact team working on mission-critical systems for a global software leader. If you have deep Assembler skills and enjoy tackling low-level system challenges in a collaborative, distributed environment—this role is for you.


đź”§ What You'll Do:

  • Design, develop, and maintain high-performance Assembler programs in a Z/OS mainframe environment
  • Collaborate with a cross-functional team to enhance core system functionality
  • Troubleshoot and resolve complex issues through dump analysis, LE routines, and system debugging tools
  • Optimize and modernize legacy applications while ensuring system integrity and performance
  • Participate in code reviews, documentation, and knowledge-sharing initiatives


đź§  What We're Looking For:

  • Strong experience with Assembler programming (HLASM) on Z/OS
  • Solid understanding of mainframe internals, reentrant/thread-safe coding, and cross-memory services
  • Proficiency with JCL, DB2, CICS, and tools like IPCS, z/XDC, Endevor
  • Ability to work independently in a fully remote setup and manage deliverables autonomously
  • Excellent problem-solving skills and a proactive mindset


âś… Bonus Points:

  • Experience supporting enterprise-scale financial, security, or infrastructure products
  • Previous contributions to modernization or migration projects
  • Familiarity with COBOL, PL/I, or integration into hybrid environments


đź“… Start: ASAP

đź’Ľ Duration: Freelance Contract

🌍 Remote: 100% – Work from anywhere


If you're ready to bring your Assembler skills to a dynamic and technically challenging environment, we’d love to hear from you. Let’s build resilient systems—together.



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