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Mainframe Tester Jobs in Ohio (NOW HIRING)

Mainframe Assembler Developer

Reesville, OH

$44.50 - $57/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Lees Creek, OH ยท On-site

$44.50 - $57.25/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

New Vienna, OH ยท On-site

$44.25 - $56.75/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Midland, OH ยท On-site

$44 - $56.50/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Port William, OH ยท On-site

$43.50 - $56/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Sabina, OH

$47.25 - $60.75/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Highland, OH

$45.50 - $58.50/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Cuba, OH ยท On-site

$44 - $56.50/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Waynesville, OH ยท On-site

$44 - $56.50/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Bowersville, OH ยท On-site

$44 - $56.75/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Jamestown, OH ยท On-site

$43.75 - $56.25/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Assembler Developer

Blanchester, OH ยท On-site

$43.50 - $56/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Lead

Columbus, OH ยท On-site

$47.25 - $60.75/hr

8 to 10 Yrs of experience in the Mainframe & Java Modernisation space. The Candidate has experience ... Testing, Debugging Object oriented principles and best practices Ability to work independently

Mainframe Assembler Developer

Clarksville, OH

$43.25 - $55.50/hr

The ideal candidate will be responsible for designing, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards. Roles and ...

Mainframe Lead

Columbus, OH ยท On-site

$47.25 - $60.75/hr

8 to 10 Yrs of experience in the Mainframe & Java Modernisation space. The Candidate has experience ... Testing, Debugging Object oriented principles and best practices Ability to work independently

New

Mainframe Lead

Columbus, OH ยท On-site

$47.25 - $60.75/hr

8 to 10 Yrs of experience in the Mainframe & Java Modernisation space. The Candidate has experience ... Testing, Debugging Object oriented principles and best practices Ability to work independently

Mainframe Developer - Onsite

Columbus, OH ยท On-site

$47.25 - $60.75/hr

Job Title: Mainframe Developer Work Location: Columbus, OH Duration: Longterm * 8 to 10 Yrs of ... Testing, Debugging Object oriented principles and best practices Ability to work independently

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Mainframe Tester information

See Ohio salary details

$18

$41

$66

How much do mainframe tester jobs pay per hour?

As of Aug 14, 2026, the average hourly pay for mainframe tester in Ohio is $41.36, according to ZipRecruiter salary data. Most workers in this role earn between $31.78 and $49.81 per hour, depending on experience, location, and employer.

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

A Mainframe Tester needs strong analytical abilities, proficiency in mainframe environments (such as IBM z/OS), and knowledge of programming languages like COBOL, JCL, and SQL, often supported by a degree in computer science or a related field. Experience with test automation tools (e.g., IBM Rational, CA tools), debugging utilities, and relevant certifications like ISTQB can be highly beneficial. Excellent problem-solving skills, attention to detail, teamwork, and effective communication help testers excel in cross-functional teams. These skills and qualities are crucial for ensuring reliability, compliance, and performance of mission-critical mainframe systems in large organizations.

What are the typical responsibilities and daily tasks of a mainframe tester?

Mainframe Testers are primarily responsible for designing, developing, and executing test cases on mainframe applications to ensure their accuracy and performance. On a daily basis, you might review requirements, create test data, identify defects, and work closely with developers to resolve coding issues. The role often involves collaborating with business analysts and system architects to understand the application's functionality and ensure compliance with business and technical standards. Mainframe Testers frequently use specialized testing tools and may participate in both manual and automated testing cycles. This collaborative and detail-oriented environment helps ensure high-quality and reliable mainframe systems for the organization.

Are mainframe tester jobs in demand?

Mainframe tester jobs remain in demand due to the continued use of legacy mainframe systems in industries like finance and government. These roles require skills in testing mainframe applications, often involving tools like JCL, COBOL, and testing frameworks, and tend to offer stable employment opportunities.

What is a mainframe tester?

A Mainframe Tester is responsible for testing applications running on mainframe systems to ensure their functionality, reliability, and security. They create and execute test cases, validate data processing, and identify defects in mainframe applications. They work with technologies like COBOL, JCL, DB2, and CICS to test batch and online processes. Their role is critical in industries like banking, insurance, and healthcare, where mainframes handle large-scale transaction processing. The tester collaborates with developers and business analysts to ensure the applications meet business requirements.

How to be a mainframe tester?

To become a mainframe tester, you should have a strong understanding of mainframe environments, including COBOL, JCL, and DB2, along with experience in software testing and quality assurance. Familiarity with testing tools like IBM Rational or CA Test Data Manager and obtaining relevant certifications can enhance your prospects. Developing skills in scripting, debugging, and understanding legacy systems is also beneficial.

What are popular job titles related to Mainframe Tester jobs in Ohio?

For Mainframe Tester jobs in Ohio, the most frequently searched job titles are:

What job categories do people searching Mainframe Tester jobs in Ohio look for?

The top searched job categories for Mainframe Tester jobs in Ohio are:

Infographic showing various Mainframe Tester job openings in Ohio as of August 2026, with employment types broken down into 84% Full Time, 8% Part Time, and 8% Contract. Highlights an 69% Physical, 1% Hybrid, and 30% Remote job distribution, with an average salary of $86,029 per year, or $41.4 per hour.

Mainframe Assembler Developer

2T Consulting

Reesville, OH

$44.50 - $57/hr

Full-time

Posted 7 days ago


Job description

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, developing, testing, and supporting mainframe applications while ensuring performance, reliability, and adherence to coding standards.

Roles and Responsibilities
  • Design, develop, code, and test application programs using IBM Assembler language.
  • Work through the complete Software Development Life Cycle (SDLC), including analysis, development, testing, and maintenance.
  • Develop and support applications in mainframe environments, including z/OS operating systems.
  • Perform debugging, troubleshooting, and performance tuning of mainframe applications.
  • Analyze and resolve application issues to ensure system stability and efficiency.
  • Create and maintain technical documentation for assembler programs, including design details and usage guidelines.
  • Provide technical support and ensure compliance with development standards and best practices.
  • Collaborate with system architects, analysts, and technical teams to translate business requirements into efficient low-level solutions.
  • Stay current with evolving mainframe technologies and assembler programming practices.
Required Skills
  • 10+ years of experience in Mainframe Assembler development.
  • Strong hands-on experience with IBM Assembler language.
  • Experience working with z/OS mainframe operating systems.
  • Strong knowledge of mainframe application development and debugging.
  • Understanding of SDLC processes and enterprise software development practices.
  • Ability to analyze complex technical issues and provide effective solutions.