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Mainframe Tester Jobs in California (NOW HIRING)

Mainframe Developer

Irvine, CA · On-site

$52.50 - $67.75/hr

Mainframe Developer Location: Irvine, CA * The preferred candidate will have a Bachelor's Degree in ... Experience testing software designed for elaborate business scenarios. * Aptitude for learning new ...

Mainframe Systems SME

Burbank, CA · On-site

$55 - $57/hr

This role is a Mainframe Systems SME for a long-term, muti-year assignment with our client ... Responsible for gathering requirements, functional and Detailed analysis/design, testing (unit ...

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Mainframe Tester information

See California salary details

$18

$42

$69

How much do mainframe tester jobs pay per hour?

As of Jul 19, 2026, the average hourly pay for mainframe tester in California is $42.94, according to ZipRecruiter salary data. Most workers in this role earn between $32.98 and $51.73 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.
What job categories do people searching Mainframe Tester jobs in California look for? The top searched job categories for Mainframe Tester jobs in California are:
What cities in California are hiring for Mainframe Tester jobs? Cities in California with the most Mainframe Tester job openings:
Infographic showing various Mainframe Tester job openings in California as of July 2026, with employment types broken down into 40% Full Time, and 60% Contract. Highlights an 100% In-person job distribution, with an average salary of $89,305 per year, or $42.9 per hour.
Automation QA Tester - UFT,QTP

Automation QA Tester - UFT,QTP

360 IT Professionals

San Francisco, CA

Contractor

Re-posted 19 days ago


Job description

Job Description

Automation QA Tester - UFT, QTP (USC, GC & H4EAD only)

Location: San Francisco CA - Need Local as In-Person required

Duration: 12-18 Months

MOI: Telephonic then In-Person

Qualifications

Qualifications:

Must have 5+ years experience in automation = UFT/QTP
Build automated test suites using UFT
Transfer user stories/requirements to test cases
Investigate test failures and assist in identifying root cause
MainFrame testing and Banking experience preferred


Additional Information

Responsibilities include:Creates, prepares and implements systems quality assurance reviews for numerous applications. Responsible for primary development of testing strategies. Consults with users, providing advice and direction.  Performs more complex analysis of business requirements and system specifications.  May serve as a coordinator for all testing activities on a project. Creates test plans and scripts for own projects. May lead and review test plans written by others. Performs moderately complex to complex test data conditioning, regression testing and testing validation. Provides specific guidance on defects to developers.Gives direction to less experienced analysts.  Logs, tracks, and verifies resolution of software and specification defects.  Documents all phases of the Systems QA process.