Demo

Mainframe Assembler

Delta System & Software, Inc.
Wilmington, DE Contractor
POSTED ON 10/15/2026
AVAILABLE BEFORE 11/13/2026

Job Title: Mainframe Assembler

Location : Wilmington, DE (Onsite 5x a week, Relocation is fine)

Exp: 10 Yrs


Job Description:


Design, coding, and testing: Mainframe assemblers are responsible for designing, coding, and testing application programs using the IBM Assembler language. They should also be familiar with the entire Software Development Life Cycle (SDLC) and have a solid understanding of mainframe operating systems, such as z/OS.


Debugging and troubleshooting: They perform debugging and troubleshooting of mainframe applications to ensure they function correctly and efficiently.


Documentation: Mainframe assemblers may also be responsible for documenting the design of the assembler programs, explaining how they work, and providing guidelines for their use.

Technical support: They provide technical support for mainframe systems, optimizing performance, and ensuring compliance with coding standards and technical design.

These assemblers work closely with system architects and analysts to understand the requirements and specifications of a system, and then translate these into efficient, low-level machine code. They must keep themselves updated with the latest mainframe technologies and assembler programming techniques to ensure the continuous functionality and reliability of mainframe systems.

Hourly Wage Estimation for Mainframe Assembler in Wilmington, DE
$46.00 to $59.00
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Mainframe Assembler?

Sign up to receive alerts about other jobs on the Mainframe Assembler career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$34,799 - $43,941
Income Estimation: 
$51,846 - $67,242
Income Estimation: 
$40,010 - $52,580
Income Estimation: 
$31,394 - $47,343
Income Estimation: 
$40,376 - $50,235
Income Estimation: 
$92,103 - $118,230
Income Estimation: 
$131,745 - $167,716
Income Estimation: 
$144,503 - $184,592
Income Estimation: 
$102,541 - $137,871
Income Estimation: 
$153,752 - $200,235
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Delta System & Software, Inc.

  • Delta System & Software, Inc. Hillsboro, OR
  • Role: Data Center Technician II Location: Hillsboro, OR Duration- 12 Months contract Job Summary We are seeking experienced Data Center Technicians to supp... more
  • 7 Days Ago

  • Delta System & Software, Inc. Reston, VA
  • Position: Oracle Developer - US Citizen Only Duration: 12-24 Months Location: Reston, VA with travel to customer meetings in Springfield, VA Note: Security... more
  • 7 Days Ago

  • Delta System & Software, Inc. Reston, VA
  • Position: Cloud Migration Engineer - Oracle Cloud Infrastructure (OCI) - US Citizen Only Duration: 12-24 Months Location: Reston, VA (100% onsite) Security... more
  • 7 Days Ago

  • Delta System & Software, Inc. Reston, VA
  • Position: Technical Project Manager (Oracle) - US Citizen Only Duration: 12-24 Months Location: Reston, VA with travel to customer meetings in Springfield,... more
  • 7 Days Ago


Not the job you're looking for? Here are some other Mainframe Assembler jobs in the Wilmington, DE area that may be a better fit.

  • Alltech Consulting Services, Inc. Wilmington, DE
  • Job Title: Mainframe Assembler Experience: 12 Years Location: Wilmington, DE- Onsite role RTTO 5 Days Onsite Contract Role Job Description: Design, coding,... more
  • Just Posted

  • Kelly Swedesboro, NJ
  • Feeling stuck? Put your career in motion with a great, new opportunity. Join the Kelly® team as an Assembler I to work at a premier manufacturing client in... more
  • 21 Days Ago

AI Assistant is available now!

Feel free to start your new journey!