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Mainframe Tester Jobs in Ohio (NOW HIRING)

Saransh Inc

Mainframe Developer - Onsite

Columbus, OH · 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

Judge Group, Inc.

Mainframe Engineer

Dublin, OH · On-site

$50 - $60/hr

Support system testing, user acceptance testing (UAT), and deployment activities * Document ... Experience with mainframe debugging and testing tools * Solid understanding of batch and online ...

Tata Consultancy Service Limited

Engineer

Cleveland, OH · On-site

$100K - $120K/yr

Mainframe Developer Must Have Technical/Functional Skills: * Analyze business requirements and ... Collaborate with cross-functional teams (testing, business analysts, distributed teams)

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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 Jul 18, 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.

Is mainframe testing difficult?

Mainframe testing can be complex due to the legacy systems, specialized tools, and programming languages involved. It requires attention to detail, understanding of mainframe environments, and often knowledge of testing automation and scripting. While challenging, proper training and experience can make it manageable for testers.

What is a Mainframe Tester job?

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.

Can mainframe be replaced by AI?

Mainframe testers work with legacy systems that often require specialized knowledge of mainframe environments, programming languages, and testing tools. While AI can assist in automating certain testing tasks and improving efficiency, it is unlikely to fully replace mainframe testers due to the complexity and critical nature of mainframe systems. Human expertise remains essential for designing tests, interpreting results, and managing system-specific issues.

Is mainframe in demand?

Mainframe testing remains in demand due to the continued use of legacy systems in industries like finance and government. Skilled testers with knowledge of mainframe environments, COBOL, and testing tools are sought after to ensure system reliability and security.

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. Gaining certifications such as IBM Certified Mainframe Application Developer can enhance your credentials, and familiarity with testing tools like CA Test Data Manager or IBM Rational Test Workbench is beneficial. Developing skills in scripting, debugging, and working within mainframe operating systems is essential for success in this role.
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Mainframe Tester jobs near you
Infographic showing various Mainframe Tester job openings in Ohio as of July 2026, with employment types broken down into 43% Full Time, and 57% Contract. Highlights an 92% In-person, 4% Hybrid, and 4% Remote job distribution, with an average salary of $86,029 per year, or $41.4 per hour.
Mainframe Developer

Mainframe Developer

Inabia Software & Consulting Inc.

Columbus, OH • On-site

$45.75 - $58.75/hr

Other

This job post has expired today. Applications are no longer accepted.

Job description

Overview

Inabia is seeking an experienced Assembler and COBOL-CICS Developer with a strong background in IBM Mainframe technologies to join our team. In this role, you will collaborate with team members to design, develop, and optimize mainframe applications while ensuring seamless integration within existing infrastructure. You will play a key part in troubleshooting, performance tuning, and adhering to best practices in enterprise software development.

Responsibilities

  • Analyze and understand existing Assembler programs and system interfaces.
  • Design, develop, test, and deploy enhancements and bug fixes in IBM Assembler (HLASM).
  • Design, develop, test, and deploy enhancements and bug fixes in COBOL-CICS.
  • Perform code walkthroughs and support system and integration testing efforts.
  • Create and maintain technical documentation for application processes and workflows.
  • Assist in resolving production issues and providing ongoing application support.
  • Participate in performance tuning and code optimization initiatives.
  • Contribute to modernization efforts such as re-engineering or re-platforming mainframe workloads.

Key Qualifications

  • Must be available to be onsite 5-days per week in our Columbus, OH office
  • Strong programming skills in IBM Assembler (HLASM) — mandatory.
  • Strong programming skills in COBOL-CICS — mandatory.
  • Hands-on experience with JCL, VSAM, and DB2.
  • Working knowledge of Changeman or similar change management tools.
  • Familiarity with Mainframe Utilities such as SORT and IDCAMS.
  • Ability to interpret functional requirements and translate them into technical solutions.

Preferred Qualifications

  • Exposure to mainframe modernization projects, including re-engineering or re-platforming workloads.
  • Experience with performance tuning and optimization of mainframe applications.

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