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Ibm Assembler Jobs (NOW HIRING)

Mainframe Assembler

Wilmington, DE · On-site

$45 - $55/hr

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 ...

Mainframe Assembler Developer

Addison, TX · On-site

$47.50 - $61/hr

This role will require hands-on expertise in IBM Assembler (HLASM) programming, JCL development, and troubleshooting, among other key skills. Responsibilities: * Develop and maintain IBM Mainframe ...

Assembler

Atlanta, GA · On-site

$15.50 - $19/hr

Required : • Proficiency in IBM Assembler Language, with strong knowledge and experience in writing and debugging assembler programs. • Expertise to use tools like IBM Debug Tool or equivalent ...

Mainframe Assembler

Wilmington, DE · On-site

$47.50 - $61.25/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 ...

Lead Mainframe Developer

O Fallon, MO · On-site

$45.75 - $59/hr

Responsibilities : • Working experience in CAMS, Settlement / Billing Systems with DXC Hogan suites (UMB,CIS,CAMS etc.) • Strong Support experience in CICS, COBOL, JCL, VSAM, IBM Assembler ...

Lead Mainframe Developer

O Fallon, MO · On-site

$45.75 - $59/hr

Responsibilities : • Working experience in CAMS, Settlement / Billing Systems with DXC Hogan suites (UMB,CIS,CAMS etc.) • Strong Support experience in CICS, COBOL, JCL, VSAM, IBM Assembler ...

... COBOL and IBM Assembler/BAL applications. * Mandatory: Prior DMV Mainframe system and data experience. Candidates must have worked on at least one DMV-specific Mainframe project. * Experience ...

Mainframe Cobol developer

Plano, TX · On-site

$45.75 - $59/hr

Heavy experience in software development using IBM Assembler in the zOS operating system * Skills with system level functions such as SVCs and PC calls. * Experience working with mainframe database ...

Mainframe Cobol developer

Plano, TX · On-site

$45.75 - $59/hr

* Heavy experience in software development using IBM Assembler in the zOS operating system * Skills with system level functions such as SVCs and PC calls. * Experience working with mainframe database ...

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

Create design documents for Java code that is currently written in IBM Assembler. * Review code for thread safety, code quality, and security violations. * Analyze and improve Spring Batch throughput.

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

Create design documents for Java code that is currently written in IBM Assembler. * Review code for thread safety, code quality, and security violations. * Analyze and improve Spring Batch throughput.

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 ...

Proficiency in IBM Assembler on z/OS, z/OS Language Environment (LE), and system‑level functions such as SVCs and PC calls. * Experience with Source Code Management tools such as Endevor and GitHub.

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

Create design documents for Java code that is currently written in IBM Assembler. * Review code for thread safety, code quality, and security violations. * Analyze and improve Spring Batch throughput.

Java Architect

Greenbelt, MD · Remote

$64.50 - $87/hr

Create design documents for Java code that is currently written in IBM Assembler. * Review code for thread safety, code quality, and security violations. * Analyze and improve Spring Batch throughput.

R&D Software Engineer

Lisle, IL · On-site

$108 - $173/hr

Experience in software development using IBM Assembler/Metal C on the mainframe (zOS or zVSE) platform; * Experience in implementing JCL to execute batch processes in zOS or zVSE; * Additional ...

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Ibm Assembler information

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How much do ibm assembler jobs pay per hour?

As of Sep 5, 2026, the average hourly pay for ibm assembler in the United States is $17.52, according to ZipRecruiter salary data. Most workers in this role earn between $15.38 and $18.99 per hour, depending on experience, location, and employer.

What is an IBM Assembler?

An IBM Assembler job involves programming in IBM Assembly Language (HLASM) to develop, maintain, and optimize low-level software on mainframe systems. IBM Assemblers work with operating system components, system utilities, and performance-critical applications. They often collaborate with system engineers to ensure efficient execution of machine-level instructions and support legacy applications. This role requires strong knowledge of mainframe architecture, debugging tools, and performance tuning techniques.

What does an IBM Assembler do?

IBM Assemblers typically spend their days writing, modifying, and testing assembler code to maintain or enhance mainframe applications, often using IBM tools like z/OS and ISPF. Their work involves debugging and optimizing programs, troubleshooting system issues, and collaborating closely with systems analysts, application developers, and operations teams to ensure smooth batch processing and data integrity. Documentation and code review are important parts of the routine, as is adapting to new business requirements or technical challenges. This role offers a dynamic, team-oriented environment with opportunities to learn from other experienced professionals and contribute directly to critical business operations.

What skills and qualifications are needed to thrive as an IBM Assembler?

To thrive as an IBM Assembler, you need a strong grasp of low-level programming, mainframe systems, and assembly language, often supported by a degree in computer science or a related field. Familiarity with IBM z/OS environments, TSO/ISPF, JCL, and debugging tools, as well as any IBM-specific certifications, is highly beneficial. Attention to detail, problem-solving ability, and clear communication are important soft skills for delivering precise, reliable solutions in collaborative IT teams. These skills ensure accurate development and maintenance of mission-critical software, supporting complex business operations on enterprise mainframes.

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What are the most commonly searched types of Ibm Assembler jobs?

The most popular types of Ibm Assembler jobs are:

What states have the most Ibm Assembler jobs?

States with the most job openings for Ibm Assembler jobs include:

Infographic showing various Ibm Assembler job openings in the United States as of August 2026, with employment types broken down into 58% Full Time, 2% Part Time, and 40% Contract. Highlights an 76% In-person, 2% Hybrid, and 22% Remote job distribution, with an average salary of $36,446 per year, or $17.5 per hour.

Mainframe Assembler

Centstone

Wilmington, DE • On-site

$45 - $55/hr

Contractor

Re-posted 6 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.


Centstone logo

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

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