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Mainframe Assembler Jobs (NOW HIRING)

Northern Trust

Mainframe Senior Developer

Chicago, IL · On-site

$50.50 - $65/hr

... on Assembler and PL/1 Programs to modify, test and De-bug Efficiently. • Provide solutions to modernize existing primitive architecture based on mainframe systems. • Ensure solutions provide ...

Sonsoft Inc

Mainframe Modernization (GC--USC)

Plano, TX

$47 - $60.25/hr

At least 6+ years of experience in Mainframe Technologies including COBOL, PL/I, IMS, CICS, REXX, ASSEMBLER, JCL, IMS DB and DB2. * At least 3+ years of experience in Mainframe Modernization Projects.

AgreeYa Solutions

Mainframe Systems Programmer

Downey, CA

$56.75 - $72.25/hr

Mainframe Systems Programmer/DBA is responsible for leading and/or supporting the most complex ... IBM: Z/OS, IMS, DB2, ADABAS, SMP/E, JCL, IMS DB/DC, CICS, ACF2, ASSEMBLER/COBOL/REXX, IBM FILE ...

CYNET SYSTEMS

Mainframe Developer

Riverwoods, IL · On-site

$35 - $40/hr

The Mainframe Developer will be responsible for developing, enhancing, and maintaining mainframe ... REXX, CICS, IMS, Assembler (nice to have). Founded in 2010 and headquartered in the Washington, DC ...

New

Halo Group

Z/OS Mainframe Systems Programmer

Anderson, SC

$50.25 - $64/hr

The Z/OS Mainframe Advanced Systems Programmer will be responsible for the analysis, development ... ASSEMBLER REXX SAS SMP/E SMF SMS RMF Additional Information All your information will be kept ...

Infojini Inc

Z/OS Mainframe Programmer

Anderson, SC · On-site

$50.25 - $64/hr

REQUIRED EDUCATION : 10 YEARS OF PROGRESSIVE EXPERIENCE IN MAINFRAME TECHNICAL SUPPORT ... ASSEMBLER q. CATALOG MAINTENANCE II. PROGRAMMING SKILLS: a. SYSTEM EXIT DEVELOPMENT AND SUPPORT b.

TriOptus LLC

Mainframe CICS Programmer

Belton, MO · On-site

$43.50 - $55.75/hr

* Mainframe CICS Engineer * As a global financial services firm, client is committed to technological ... Assembler, COBOL and REXX coding and knowledge of CICS Exits. * Web application support in a CICS ...

Analytica

z/OS Mainframe Programmer

Washington, DC · Remote

Analytica is seeking a remote  z/OS Mainframe Programmer  to support a long standing federal ... Write, test, and troubleshoot programs using Assembler , JCL , and related IBM z/OS utilities.

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How much do mainframe assembler jobs pay per hour?

As of May 30, 2026, the average hourly pay for 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 a Mainframe Assembler 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.

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

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.

What are some typical daily responsibilities of a Mainframe Assembler?

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.
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Mainframe Assembler jobs near you
Infographic showing various Mainframe Assembler job openings in the United States as of May 2026, with employment types broken down into 80% Full Time, 6% Part Time, 1% Temporary, 9% Contract, and 4% Nights. Highlights an 85% Physical, 6% Hybrid, and 9% Remote job distribution, with an average salary of $111,026 per year, or $53.4 per hour.

Mainframe Infrastructure Architect

Laiba Technologies LLC

Portland, OR • Hybrid

Other

Posted 2 days ago

Job description

Position: Mainframe Infrastructure Architect
Location: Portland OR (Hybrid - 3 Days onsite)

Mainframe infrastructure architect with strong Z/OS.
System Performance and Optimization and Modernization and Integration is the key.
Architectural Design and Strategy: Lead the architectural design and strategy for complex mainframe systems, including core components like z/OS, Db2, CICS, Storage, Security, and MQ. This involves creating conceptual, logical, and physical architectural views.
System Performance and Optimization: Monitor and analyze system performance to identify bottlenecks and perform tuning for optimal efficiency and capacity.
Availability and Security: Ensuring system scalability, high availability, security, and the implementation of backup and recovery plans.
Modernization and Integration: Develop and implement strategies to modernize legacy applications and integrate mainframe environments with modern technologies such as cloud platforms, microservices, and APIs. This often includes migrating workloads and data across platforms.
Technical Leadership and Guidance: Provide technical leadership, mentorship, and guidance to development and infrastructure teams, ensuring best practices and coding standards are followed.
Troubleshooting and Support: Diagnose and resolve complex technical issues and provide high-level (L3) support for middleware and other system components.
Documentation and Governance: Write technical documentation, including design specifications, processes, procedures, and system configurations. They also develop and enforce architecture governance procedures.
Collaboration and Communication: Work closely with internal teams, external vendors, and business stakeholders to understand requirements, communicate technical decisions, and ensure solutions meet business needs

Key Skill Areas
Technical Expertise: Deep knowledge of mainframe languages and technologies (COBOL, JCL, CICS, DB2, VSAM, REXX,PL/I, Assembler) and operating systems (z/OS).
Utilities & Tools: Proficiency with JCL utilities (SORT, IEBGENER), testing/debugging tools (IBM DEBUG tool, Xpeditor), and change management tools (Endeavor, SCLM).
Modern Technologies: Familiarity with modern IT concepts like cloud computing (AWS, Azure, Google Cloud Platform), containers (Docker, Kubernetes), DevOps toolchains (Jenkins, GitHub), and Agile methodologies.
Problem-Solving: Strong analytical mindset and problem-solving abilities to troubleshoot complex issues and design effective solutions.
Strategic Planning: Ability to assess business impact of specific technologies/strategies and create long-term roadmaps for IT optimization and transformation.

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