Wilmington, DE · On-site
$45 - $55/hr
Mainframe Assembler Location: Wilmington, Delaware Pay Rate: $45-$55/hr Contract: Long-Term Contract Schedule: Onsite | 5 Days/Week Work Model: Onsite (5 Days/Week) Employment Type: Contract ...
Quick apply
Wilmington, DE · On-site
$45 - $55/hr
Mainframe Assembler Location: Wilmington, Delaware Pay Rate: $45-$55/hr Contract: Long-Term Contract Schedule: Onsite | 5 Days/Week Work Model: Onsite (5 Days/Week) Employment Type: Contract ...
Wilmington, DE · On-site
$70/hr
Mainframe Assembler Location : Wilmington, DE Exp: 10+ Yrs Rate: $70/hr Salary: $120K RTTO - 5 Days Onsite Design, coding, and testing: Mainframe assemblers are responsible for designing, coding, and ...
Wilmington, DE · On-site
$70/hr
Mainframe Assembler Location : Wilmington, DE Exp: 10+ Yrs Rate: $70/hr Salary: $120K RTTO - 5 Days Onsite Design, coding, and testing: Mainframe assemblers are responsible for designing, coding, and ...
Wilmington, DE · On-site
$60 - $65/hr
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 ...
New
Quick apply
Wilmington, DE · On-site
$60 - $65/hr
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 ...
New
Wilmington, DE · On-site
$47.50 - $61/hr
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 ...
Wilmington, DE · On-site
$47.50 - $61/hr
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 ...
Alpharetta, GA · On-site
$47.75 - $61.50/hr
Role: Mainframe Assembler Location: Alpharetta, GA/Omaha, NE (Locals Only) Relevant Experience: 12+ Years Roles and Responsibilities: * Senior mainframe Assembler with good hands-on project ...
Quick apply
Alpharetta, GA · On-site
$47.75 - $61.50/hr
Role: Mainframe Assembler Location: Alpharetta, GA/Omaha, NE (Locals Only) Relevant Experience: 12+ Years Roles and Responsibilities: * Senior mainframe Assembler with good hands-on project ...
Wilmington, DE · On-site
$60/hr
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 ...
Quick apply
Wilmington, DE · On-site
$60/hr
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 ...
Clarksville, OH · On-site
$43.25 - $55.50/hr
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 ...
Clarksville, OH · On-site
$43.25 - $55.50/hr
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 ...
Port William, OH · On-site
$43.50 - $56/hr
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 ...
New
Port William, OH · On-site
$43.50 - $56/hr
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 ...
New
Jamestown, OH · On-site
$43.75 - $56.25/hr
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 ...
New
Jamestown, OH · On-site
$43.75 - $56.25/hr
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 ...
New
Wilmington, DE · On-site
$47.50 - $61.25/hr
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 ...
Wilmington, DE · On-site
$47.50 - $61.25/hr
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 ...
Blanchester, OH · On-site
$43.50 - $56/hr
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 ...
New
Blanchester, OH · On-site
$43.50 - $56/hr
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 ...
New
Lees Creek, OH · On-site
$44.50 - $57.25/hr
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 ...
Lees Creek, OH · On-site
$44.50 - $57.25/hr
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 ...
$44.50 - $57/hr
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 ...
$44.50 - $57/hr
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 ...
New Vienna, OH · On-site
$44.25 - $56.75/hr
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 ...
New
New Vienna, OH · On-site
$44.25 - $56.75/hr
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 ...
New
$44 - $56.50/hr
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 ...
New
$44 - $56.50/hr
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 ...
New
Bowersville, OH · On-site
$44 - $56.75/hr
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 ...
Bowersville, OH · On-site
$44 - $56.75/hr
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 ...
Martinsville, OH · On-site
$44 - $56.50/hr
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 ...
Martinsville, OH · On-site
$44 - $56.50/hr
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 ...
Waynesville, OH · On-site
$44 - $56.50/hr
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 ...
Waynesville, OH · On-site
$44 - $56.50/hr
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 ...
Sabina, OH · On-site
$47.25 - $60.75/hr
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 ...
Sabina, OH · On-site
$47.25 - $60.75/hr
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 ...
Cuba, OH · On-site
$44 - $56.50/hr
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 ...
Cuba, OH · On-site
$44 - $56.50/hr
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 ...
$10.10 - $15.76
2% of jobs
$15.76 - $21.42
0% of jobs
$21.42 - $27.08
0% of jobs
$27.08 - $32.74
0% of jobs
$32.74 - $38.40
2% of jobs
$38.40 - $44.06
12% of jobs
$46.59 is the 25th percentile. Wages below this are outliers.
$44.06 - $49.72
20% of jobs
The median wage is $52.66 / hr.
$49.72 - $55.38
27% of jobs
$59.44 is the 75th percentile. Wages above this are outliers.
$55.38 - $61.04
17% of jobs
$61.04 - $66.70
12% of jobs
$66.70 - $72.36
9% of jobs
$10
$53
$72
To thrive as a Mainframe Assembler, you need a strong background in assembly language programming, mainframe operations, and a solid understanding of systems architecture—often backed by a degree in computer science or related field. Experience with IBM z/OS, JCL (Job Control Language), and tools such as ISPF, along with certifications like IBM Certified System Programmer, is highly beneficial. Attention to detail, problem-solving abilities, and effective communication skills help distinguish top performers in this position. These skills are crucial to ensure accurate and efficient program development, system stability, and smooth collaboration within complex mainframe environments.
Mainframe Assemblers are typically responsible for writing, testing, and maintaining assembler language programs that run on enterprise mainframe systems. Their day-to-day tasks often include analyzing system requirements, coding program logic, debugging complex routines, and optimizing performance for high-volume processing. They frequently collaborate with systems analysts, application developers, and operations teams to ensure seamless integration and reliability of mainframe applications. Staying current with system updates and responding quickly to troubleshooting requests is also an important part of the job.
A Mainframe Assembler job involves programming in assembly language on IBM mainframe systems. Assemblers write low-level code to optimize system performance, handle critical processes, and interact with hardware directly. These professionals work with legacy systems, maintaining and enhancing core applications used in industries like banking, insurance, and government. Strong knowledge of IBM z/OS, JCL, and debugging tools is essential.
Cities with the most Mainframe Assembler job openings:
The most popular types of Mainframe Assembler jobs are:
States with the most job openings for Mainframe Assembler jobs include:
The top searched job categories for Mainframe Assembler jobs are:
Location: Wilmington, Delaware
Pay Rate: $45–$55/hr
Contract: Long-Term Contract
Schedule: Onsite | 5 Days/Week
Work Model: Onsite (5 Days/Week)
Employment Type: Contract
Experience: 10+ Years Required
About the Role
We are seeking an experienced Mainframe Assembler Developer for a contract opportunity in Wilmington, Delaware. The ideal candidate will have strong expertise in IBM Assembler programming, z/OS, and the Software Development Life Cycle (SDLC). This role involves developing, maintaining, and optimizing enterprise mainframe applications while ensuring system reliability and performance.
Responsibilities
• Design, develop, test, and maintain applications using IBM Assembler.
• Analyze business and technical requirements to deliver efficient mainframe solutions.
• Perform debugging, troubleshooting, and performance optimization of mainframe applications.
• Create and maintain technical documentation, coding standards, and program specifications.
• Collaborate with architects, analysts, and development teams throughout the SDLC.
Requirements
• 10+ years of Mainframe Assembler development experience required.
• Strong expertise in IBM Assembler programming and z/OS operating systems.
• Experience with application design, coding, testing, debugging, and production support.
• Solid understanding of the Software Development Life Cycle (SDLC).
• Excellent analytical, troubleshooting, communication, and problem-solving skills.
Position Highlights
• Role: Mainframe Assembler Developer
• Employment Type: Contract
• • Industry: Enterprise Technology
• Technologies: IBM Assembler, z/OS, Mainframe, SDLC, Application Support
Join a collaborative technology team where your mainframe expertise will support the development and maintenance of high-performance enterprise systems while contributing to reliable, business-critical applications.
Sourced by ZipRecruiter
In the dynamic landscape of today’s business environment, flexibility is key. At Centstone, we understand the unique demands of your industry and offer tailored Contract Hiring solutions to empower your organization with the right talent when you need it most.
Recruiting and staffing services
51 - 200 Employees
Hazlet, NJ, US
2022
