Mainframe Assembler Developer

Veriipro; Wilmington (DE); On-site; USD 120,000 - 180,000; Full time

Job summary

Veriipro is seeking an experienced Mainframe Assembler Developer with deep IBM Assembler expertise to design, develop, test, and maintain mainframe applications in a z/OS environment.

The role emphasizes high performance, reliability, and coding standards, with responsibilities spanning SDLC activities, debugging, tuning, and producing detailed technical docs.

Qualifications

• 10+ years of experience in mainframe assembler development.
• Strong hands-on experience with IBM Assembler language.
• Experience working with z/OS mainframe operating systems.
• Knowledge of SDLC and enterprise software development practices.
• Ability to analyze complex technical issues and provide effective solutions.
• Experience with performance tuning and debugging.

Responsibilities

• Design, develop, code, and test application programs using IBM Assembler language.
• Work through the complete Software Development Life Cycle (SDLC).
• Develop and support applications in mainframe environments, including z/OS.
• Perform debugging, troubleshooting, and performance tuning of mainframe applications.
• Analyze and resolve application issues to ensure stability and efficiency.
• Create and maintain technical documentation for assembler programs.
• Provide technical support and ensure compliance with development standards.
• Collaborate with system architects, analysts, and technical teams to translate requirements.
• Stay current with evolving mainframe technologies and assembler practices.

Skills

Mainframe Assembler

IBM Assembler

z/OS

SDLC

Debugging

Problem Solving

Job description

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards.

Roles and Responsibilities

• Design, develop, code, and test application programs using IBM Assembler language.
• Work through the complete Software Development Life Cycle (SDLC), including analysis, development, testing, and maintenance.
• Develop and support applications in mainframe environments, including z/OS operating systems.
• Perform debugging, troubleshooting, and performance tuning of mainframe applications.
• Analyze and resolve application issues to ensure system stability and efficiency.
• Create and maintain technical documentation for assembler programs, including design details and usage guidelines.
• Provide technical support and ensure compliance with development standards and best practices.
• Collaborate with system architects, analysts, and technical teams to translate business requirements into efficient low-level solutions.
• Stay current with evolving mainframe technologies and assembler programming practices.

Required Skills

• 10+ years of experience in Mainframe Assembler development.
• Strong hands‑on experience with IBM Assembler language.
• Experience working with z/OS mainframe operating systems.
• Strong knowledge of mainframe application development and debugging.
• Understanding of SDLC processes and enterprise software development practices.
• Ability to analyze complex technical issues and provide effective solutions.