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Mainframe Testing Jobs in Milwaukee, WI (NOW HIRING)

Deloitte

Mainframe Developer

Milwaukee, WI · Hybrid

$48.25 - $62/hr

... integration testing of new healthcare compliance updates. * Maintain accurate technical ... As an experienced Mainframe Developer ,you will have the ability to share new ideas and collaborate ...

Sonsoft Inc

Mainframe Consultant

Franklin, WI · On-site

... 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 ...

Sonsoft Inc

Mainframe PL/1 Consultant

Milwaukee, WI · On-site

... 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 ...

Sonsoft Inc

Mainframe PL/1 Consultant

Milwaukee, WI

... 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 ...

Sonsoft Inc

Mainframe Automation Testing

Milwaukee, WI · On-site

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 ...

US Bank

z/OS Systems Engineer

Brookfield, WI

S. Bank is seeking a z/OS Systems Programmer that has extensive experience in mainframe ... testing -Configure both z/OS and third-party software -Document software and hardware ...

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How much do mainframe testing jobs pay per hour?

As of Jul 11, 2026, the average hourly pay for mainframe testing in Milwaukee, WI is $52.59, according to ZipRecruiter salary data. Most workers in this role earn between $46.44 and $59.66 per hour, depending on experience, location, and employer.

What are some common challenges faced by professionals working in Mainframe Testing?

Professionals in Mainframe Testing often encounter challenges such as understanding legacy code, dealing with limited documentation, and adapting to the evolving integration of mainframe and modern systems. Testers must also effectively validate large volumes of data, ensure compatibility across interconnected applications, and manage tight release deadlines. Collaborating closely with developers, business analysts, and operations teams is essential for clarifying requirements and troubleshooting issues. Successfully overcoming these challenges requires persistence, a willingness to learn, and strong teamwork skills.

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

To thrive in Mainframe Testing, you need strong analytical abilities, a solid understanding of mainframe environments and programming languages like COBOL, JCL, and experience with testing methodologies. Familiarity with tools such as IBM Mainframe, CA7/Endevor, and mainframe testing frameworks, as well as ISTQB certification, is highly valuable. Attention to detail, strong problem-solving skills, and effective communication are essential soft skills in this role. These competencies help ensure that complex mainframe systems are thoroughly tested, reliable, and meet business requirements.

What is a Mainframe Testing job?

A Mainframe Testing job involves validating and verifying applications running on mainframe systems to ensure they function correctly, efficiently, and securely. Testers perform various types of testing, including functional, integration, regression, and performance testing, using tools like JCL, COBOL, DB2, and CICS. They analyze test results, identify defects, and collaborate with developers to resolve issues. Mainframe testers need knowledge of batch processing, databases, and system interactions to ensure seamless operations. The role is critical in industries like banking, insurance, and healthcare, where mainframes handle high-volume transactions.

What are popular job titles related to Mainframe Testing jobs in Milwaukee, WI? For Mainframe Testing jobs in Milwaukee, WI, the most frequently searched job titles are:
What job categories do people searching Mainframe Testing jobs in Milwaukee, WI look for? The top searched job categories for Mainframe Testing jobs in Milwaukee, WI are:
Mainframe Testing jobs near you
Infographic showing various Mainframe Testing job openings in Milwaukee, WI as of July 2026, with employment types broken down into 4% Locum Tenens, 76% Full Time, 7% Part Time, 3% Temporary, 7% Contract, and 3% Summer. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution, with an average salary of $109,388 per year, or $52.6 per hour.
Senior Mainframe

Senior Mainframe

Cognizant Technology Solutions

Brookfield, WI • On-site

Full-time

Posted 12 days ago

Cognizant rating

7.4

Company rating: 7.4 out of 10

Based on 85 frontline employees who took The Breakroom Quiz

39th of 58 rated business consultants

Job description

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About the role
As a Mainframe Engineering , you will make an impact by leading the delivery, modernization, and optimization of enterprise-scale mainframe applications that support critical card and payment processing platforms. You will be a valued member of the Engineering leadership team and work collaboratively with product owners, architects, business stakeholders, infrastructure teams, and engineering partners to deliver resilient, scalable, and high-performing solutions.
In this role, you will:
  • Lead the end-to-end delivery of complex mainframe solutions using COBOL, JCL, and DB2, ensuring quality, reliability, and timely execution of business priorities.
  • Guide solution architecture and technical design for high-volume transactional and batch workloads, driving performance, scalability, and maintainability.
  • Partner with product owners, business analysts, architects, and stakeholders to translate business requirements into effective technical solutions while minimizing delivery risk.
  • Drive engineering excellence through code reviews, development standards, testing practices, performance optimization, and continuous improvement initiatives.
  • Manage, mentor, and develop engineering teams in a hybrid work environment, fostering collaboration, accountability, and technical growth.
Work model
We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role's business requirements, this is a hybrid position requiring attendance in a client or Cognizant office as determined by project and business needs. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.
The working arrangements for this role are accurate as of the date of posting. This may change based on the project you're engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.
What you need to have to be considered
  • Extensive experience designing, developing, and supporting enterprise mainframe applications using COBOL, JCL, and DB2 in large-scale production environments.
  • Strong expertise in DB2 database design, SQL optimization, performance tuning, and troubleshooting across transactional and batch processing systems.
  • Proven experience leading engineering teams, managing delivery plans, coordinating dependencies, and driving stakeholder alignment across complex initiatives.
  • Hands-on experience supporting cards and payments platforms, including transaction processing, authorization, clearing, settlement, or related payment flows.
  • Strong understanding of application performance optimization, production support, incident management, and root-cause analysis in mission-critical environments.
  • Experience establishing development standards, code review practices, testing strategies, and quality controls for mainframe engineering teams.
  • Excellent communication and collaboration skills with the ability to engage both technical and non-technical stakeholders.
  • Experience working within regulated environments with knowledge of security, compliance, risk, and audit requirements.
  • Bachelor's degree in Computer Science, Information Systems, Engineering, or a related field, or equivalent professional experience.
These will help you stand out
  • Experience modernizing or refactoring legacy COBOL and JCL applications.
  • Knowledge of mainframe integration patterns supporting enterprise payment ecosystems and distributed platforms.
  • Experience improving deployment automation, job scheduling, release management, and operational efficiency across mainframe environments.
  • Familiarity with engineering metrics, including cycle time, defect leakage, environment stability, and operational performance indicators.
  • Experience implementing reusable frameworks, automation, and continuous improvement programs within mainframe delivery organizations.
  • IBM certifications, including IBM Certified Application Developer (CICS), IBM DB2 certifications, or equivalent mainframe engineering credentials.

We're excited to meet people who share our mission and can make an impact in a variety of ways. Don't hesitate to apply, even if you only meet the minimum requirements listed. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting things to this role
About Cognizant:
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization's unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.

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