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Ibm Mainframe Assembler Jobs (NOW HIRING)

Centstone

Mainframe Assembler

Wilmington, DE · On-site

$45 - $55/hr

Mainframe Assembler Location: Wilmington, Delaware Pay Rate: $45-$55/hr Contract: Long-Term ... The ideal candidate will have strong expertise in IBM Assembler programming, z/OS, and the Software ...

Sonsoft Inc

IBM Mainframe Assembler Programmer

Omaha, NE

$46.75 - $60.25/hr

IBM Mainframe Assembler Programmer (with experience on Assembler, COBOL, JCL, VSAM, DB2, CICS, ENDEVOR, FILEAID, Debugging tools like XPEDITER/INTERTEST) Job Location : Omaha, Nebraska (Omaha is a ...

Synapse Tech Services Inc

Mainframe Assembler

Wilmington, DE · On-site

$47.50 - $61/hr

IBM Assembler (HLASM) Programming * IBM z/OS * Mainframe Application Development * SDLC * Debugging & Troubleshooting * Mainframe Performance Tuning * Technical Documentation * Mainframe System ...

Symphony Enterprises

Mainframe Assembler

Wilmington, DE · On-site

$47.50 - $61/hr

Wilmington, DE (5 Days Onsite) Experience: 10+ Years Short We are looking for an experienced Mainframe Assembler Developer with 10+ years of hands-on experience in IBM Assembler programming. The ...

JS Consulting

Sr. Mainframe Developer

Woodlawn, MD · On-site

$51 - $65.50/hr

Experience with Mainframe Assembler development. * Certification such as IBM Mainframe Developer Professional, Interskill - Mainframe Application Programmer - COBOL and IBM Enterprise COBOL for z/OS ...

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How much do ibm mainframe assembler jobs pay per hour?

As of Aug 7, 2026, the average hourly pay for ibm mainframe assembler in the United States is $53.38, according to ZipRecruiter salary data. Most workers in this role earn between $47.12 and $60.58 per hour, depending on experience, location, and employer.

What is an IBM Mainframe Assembler?

An IBM Mainframe Assembler job involves programming in Assembly language on IBM mainframe systems. Professionals in this role write, debug, and optimize low-level code to interact directly with hardware and system software. They often work on performance-critical applications, system utilities, or legacy code maintenance. This job requires deep knowledge of mainframe architecture, instruction sets, and operating systems like z/OS. It is crucial in industries relying on mainframes, such as banking, insurance, and government.

What are the key skills and qualifications needed to thrive in the IBM Mainframe Assembler position, and why are they important?

To thrive as an IBM Mainframe Assembler, you need strong expertise in assembly language programming, debugging, and understanding of mainframe systems, often supported by a degree in computer science or related experience. Familiarity with IBM z/OS, JCL (Job Control Language), and tools such as IBM Debug Tool or SDSF is commonly expected, and certifications in mainframe technologies can be advantageous. Attention to detail, strong problem-solving ability, and effective communication are key soft skills for this position. These skills are critical to ensuring the reliability, efficiency, and maintainability of essential enterprise applications running on mainframe systems.

What are the typical daily responsibilities of an IBM Mainframe Assembler?

As an IBM Mainframe Assembler, your typical day involves writing, modifying, and debugging assembly language programs that support business-critical applications. You’ll often review technical specifications, collaborate closely with system programmers and application developers, and use debugging tools to analyze and resolve issues. Maintaining documentation, performing code reviews, and optimizing existing routines for better performance are also regular tasks. This role often requires adherence to strict change management processes and close collaboration within a team responsible for the stability and reliability of mainframe environments.

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Ibm Mainframe Assembler jobs near you
Infographic showing various Ibm Mainframe Assembler job openings in the United States as of August 2026, with employment types broken down into 77% Full Time, 10% Part Time, 1% Temporary, 8% Contract, and 4% Nights. Highlights an 100% Physical job distribution, with an average salary of $111,026 per year, or $53.4 per hour.

Mainframe Assembler

Centstone

Wilmington, DE • On-site

$45 - $55/hr

Contractor

Posted 8 days ago

Job description

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
 

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.

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About Centstone

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.

Industry

Recruiting and staffing services

Company size

51 - 200 Employees

Headquarters location

Hazlet, NJ, US

Year founded

2022

Social media

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