ZipRecruiter

Log In

1

Mainframe Assembler Programmer 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 ...

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 ...

2T Consulting

Mainframe Assembler Developer

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 ...

2T Consulting

Mainframe Assembler Developer

New Vienna, OH

$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

2T Consulting

Mainframe Assembler Developer

Midland, OH

$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

2T Consulting

Mainframe Assembler Developer

Wilmington, DE

$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 ...

2T Consulting

Mainframe Assembler Developer

Jamestown, OH

$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

2T Consulting

Mainframe Assembler Developer

Reesville, OH

$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 ...

2T Consulting

Mainframe Assembler Developer

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 ...

2T Consulting

Mainframe Assembler Developer

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 ...

2T Consulting

Mainframe Assembler Developer

Highland, OH

$45.50 - $58.50/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 ...

2T Consulting

Mainframe Assembler Developer

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 ...

Maintec Technologies

Mainframe Assembler

Wilmington, DE · On-site

$60 - $65/hr

They must keep themselves updated with the latest mainframe technologies and assembler programming techniques to ensure the continuous functionality and reliability of mainframe systems.

New

Sonsoft Inc

IBM Mainframe Assembler Programmer

Omaha, NE · On-site

$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 ...

next page

Showing results 1-20

All JobsMainframe Assembler Programmer Jobs

Mainframe Assembler Programmer information

See salary details

$38

$54

$66

How much do mainframe assembler programmer jobs pay per hour?

As of Aug 15, 2026, the average hourly pay for mainframe assembler programmer in the United States is $54.11, according to ZipRecruiter salary data. Most workers in this role earn between $47.12 and $63.22 per hour, depending on experience, location, and employer.

What are the typical day-to-day responsibilities of a mainframe assembler programmer?

As a Mainframe Assembler Programmer, your daily tasks often include writing, testing, and debugging assembler code to support core business applications and system utilities. You’ll work closely with systems analysts, application developers, and operations teams to troubleshoot issues, optimize program performance, and implement software enhancements. Regular responsibilities may also involve reviewing system logs, maintaining documentation, and participating in system upgrades or migrations. The role often requires a proactive approach to problem-solving and collaboration within a structured, process-driven team environment.

Are mainframe assembler programmer jobs in demand?

Mainframe assembler programmer jobs remain in demand in industries that rely on legacy systems, such as finance, government, and insurance. These roles require knowledge of mainframe environments, assembly language, and often involve maintaining or upgrading existing mainframe applications. Demand is steady due to the continued use of mainframes for critical business operations.

What are the key skills and qualifications needed to thrive as a mainframe assembler programmer?

To thrive as a Mainframe Assembler Programmer, you need strong expertise in low-level programming, a deep understanding of mainframe architectures (such as IBM z/OS), and often a degree in computer science or related field. Familiarity with tools like TSO, ISPF, JCL, and debugging utilities, along with experience using source control and system monitoring software, is highly valued, and certifications in mainframe technology can be beneficial. Excellent problem-solving abilities, meticulous attention to detail, and effective communication skills help you succeed in complex, team-based environments. These technical and interpersonal abilities are critical for maintaining system reliability, ensuring performance, and supporting business operations across large-scale enterprises.

What does a mainframe assembler programmer do?

A mainframe assembler programmer writes and maintains low-level assembly language code for mainframe computers, often working on system software, utilities, or application programs. They use tools like IBM Assembler and need a strong understanding of computer architecture, machine instructions, and debugging techniques to optimize performance and ensure system stability.

Is mainframe assembler programming difficult?

Mainframe assembler programming is considered complex due to its low-level nature, requiring a strong understanding of hardware architecture, memory management, and instruction sets. It often involves detailed coding and debugging, making it challenging for those without prior experience in systems programming or assembly language. Proficiency in tools like IBM's assembler and knowledge of mainframe environments are essential for success.

What is a mainframe assembler programmer?

A Mainframe Assembler Programmer is responsible for writing, maintaining, and optimizing assembly language programs that run on mainframe computers. They work with low-level machine instructions to develop high-performance applications, often in industries like banking, insurance, and government. Their role includes debugging, performance tuning, and integrating new or existing software with mainframe systems. Strong knowledge of IBM mainframes, z/OS, and tools like High-Level Assembler (HLASM) is essential.

More about Mainframe Assembler Programmer jobs

What cities are hiring for Mainframe Assembler Programmer jobs?

Cities with the most Mainframe Assembler Programmer job openings:

What are the most commonly searched types of Mainframe Assembler Programmer jobs?

The most popular types of Mainframe Assembler Programmer jobs are:

What states have the most Mainframe Assembler Programmer jobs?

States with the most job openings for Mainframe Assembler Programmer jobs include:

What job categories do people searching Mainframe Assembler Programmer jobs look for?

The top searched job categories for Mainframe Assembler Programmer jobs are:

Mainframe Assembler Programmer jobs near you
Infographic showing various Mainframe Assembler Programmer job openings in the United States as of August 2026, with employment types broken down into 80% Full Time, 9% Part Time, 1% Temporary, 6% Contract, and 4% Nights. Highlights an 100% Physical job distribution, with an average salary of $112,558 per year, or $54.1 per hour.

Mainframe Assembler

Centstone

Wilmington, DE • On-site

$45 - $55/hr

Contractor

Posted 16 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

Social media

Facebook

View All Centstone Jobs