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Mainframe Tester Jobs in Milwaukee, WI (NOW HIRING)

They are seeking a Mainframe PL/1 Consultant with extensive experience in mainframe technologies ... Testing methods and tools, Knowledge of Build, Knowledge of Maintenance and Support methods • At ...

... Testing methods and tools, Knowledge of Build, Knowledge of Maintenance and Support methods At ... At least 4 years of experience with Mainframe techonologies Additional Information ** U.S. citizens ...

... Testing methods and tools, Knowledge of Build, Knowledge of Maintenance and Support methods At ... At least 4 years of experience with Mainframe techonologies Additional Information ** U.S. citizens ...

... Testing methods and tools, Knowledge of Build, Knowledge of Maintenance and Support methods At ... At least 4 years of experience with Mainframe techonologies Additional Information ** U.S. citizens ...

Jenkins * 2 yrs of SDET knowledge in PL1 (Mainframe) * 2 yrs of Insurance knowledge * Framework Design and Enhancement * Experience with Insurance domain * Ability to work in team environment and ...

z/OS Systems Engineer

Brookfield, WI · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Participate in Disaster Recovery (DR) planning, testing, and recovery exercises to ensure business continuity and platform resiliency. * Manage and support mainframe hardware, coupling facilities ...

Software Engineer I - Mainframe (Cobol)

Brookfield, WI · On-site

$46.50 - $59.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

This position will be responsible for the analysis, design, testing, development and maintenance of best in class software experiences. The candidate is a self-motivated individual who can ...

... mainframe systems, on-prem and cloud environments. Detect, diagnose, and resolve performance ... Conduct functional, automated and regression testing during different phases of software ...

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Mainframe Tester information

See Milwaukee, WI salary details

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How much do mainframe tester jobs pay per hour?

As of Aug 14, 2026, the average hourly pay for mainframe tester in Milwaukee, WI is $42.86, according to ZipRecruiter salary data. Most workers in this role earn between $32.93 and $51.63 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 job categories do people searching Mainframe Tester jobs in Milwaukee, WI look for?

The top searched job categories for Mainframe Tester jobs in Milwaukee, WI are:

Infographic showing various Mainframe Tester job openings in Milwaukee, WI as of August 2026, with employment types broken down into 87% Full Time, 8% Part Time, and 5% Contract. Highlights an 63% Physical, 1% Hybrid, and 36% Remote job distribution, with an average salary of $89,155 per year, or $42.9 per hour.

Mainframe PL/1 Consultant

SonSoft Inc.

Milwaukee, WI • On-site

Full-time

Re-posted 12 days ago


Job description

Job Summary:
SonSoft Inc. is a USA based corporation specializing in Software Development, Software Consultancy and Information Technology Enabled Services. They are seeking a Mainframe PL/1 Consultant with extensive experience in mainframe technologies and software development life cycles.
Qualifications:
Required:
• Bachelor’s degree or foreign equivalent required from an accredited institution. Will also consider three years of progressive experience in the specialty in lieu of every year of education.
• At least 4 years of experience with Mainframe technologies
Preferred:
• At least 6 years of relevant experience with mainframe- PL/1 language, JCL, and DB2 database
• At least 6 years of experience in software development life cycle.
• At least 4 years of experience in Design methods and tools, Configuration and Release Management methods and tools, Knowledge of Testing methods and tools, Knowledge of Build, Knowledge of Maintenance and Support methods
• At least 3 years of experience in Project life cycle activities on development and maintenance projects.
• Ability to work in team in diverse/ multiple stakeholder environment
• Experience in Insurance domain
• Analytical skills
• Experience and desire to work in a Global delivery environment
Company:
SonSoft is an IT Staffing and consulting firm and duly organized under the laws of Commonwealth of Georgia. Founded in 2007, the company is headquartered in Alpharetta, USA, with a team of 51-200 employees. The company is currently Growth Stage.

Sonsoft logo

About Sonsoft

Sourced by ZipRecruiter

Sonsoft , Inc. is a USA based corporation duly organized under the laws of the Commonwealth of Georgia. Sonsoft Inc. is growing at a steady pace specializing in the fields of Software Development, Software Consultancy and Information Technology Enabled Services.

Industry

It services

Company size

51 - 200 Employees

Headquarters location

Alpharetta, GA, US

Year founded

2007