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Mainframe Testing Jobs in Wisconsin (NOW HIRING)

Cobol / Mainframe Developer

Milwaukee, WI · On-site

$48.25 - $62/hr

They are seeking a Cobol / Mainframe Developer to work within Card Management Systems, focusing on ... • Strong unit testing skills. • Flexibility to be on on-call support, as required. • ...

Mainframe Sr Developer

Milwaukee, WI · On-site

$90 - $120/hr

Mainframe Sr Developer Job ID: 2024-13158 Job Location: Milwaukee, WI or Lincoln, NE (100% Onsite ... Knowledgeable in test driven development (TDD) and automated functional testing including tools ...

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 ...

Mainframe Engineer-Franklin, WI

Franklin, WI · On-site

$45.50 - $58.50/hr

The role involves designing, developing, and testing program units while ensuring adherence to SDLC standards and applying mainframe engineering best practices. Responsibilities : • Design, develop ...

... 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 ...

WI · On-site

$120 - $160/hr

Recommending development testing tools and methodologies and reviewing and validating test plans ... mainframe environment, using COBOL, DB2, CICS, JCL, MQ-Series, SQL, and VSAM files. Analyzes and ...

New

... 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 ...

WI · On-site

$180 - $240/hr

Expertise in capacity planning, workload forecasting, business event readiness, stress testing ... The Team The Mainframe Capacity & Performance team is responsible for performance engineering ...

New

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 ...

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 ...

MF Cobol developer

Madison, WI · On-site

$90 - $130/hr

Perform unit testing, debugging, and performance optimization to ensure application effectiveness and efficiency. * Integrate Mainframe applications with other systems and platforms to support data ...

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

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Mainframe Testing information

What is mainframe testing?

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 the key skills and qualifications needed to thrive in mainframe testing?

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 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.

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 testing tools like IBM Rational or CA Test Data Manager. Gaining experience in software testing, scripting, and understanding mainframe architecture is essential, often supported by certifications such as IBM Certified Solution Developer. Attention to detail and the ability to work with legacy systems are important in this role.

What are popular job titles related to Mainframe Testing jobs in Wisconsin?

For Mainframe Testing jobs in Wisconsin, the most frequently searched job titles are:

What job categories do people searching Mainframe Testing jobs in Wisconsin look for?

The top searched job categories for Mainframe Testing jobs in Wisconsin are:

What cities in Wisconsin are hiring for Mainframe Testing jobs?

Cities in Wisconsin with the most Mainframe Testing job openings:

Infographic showing various Mainframe Testing job openings in Wisconsin as of August 2026, with employment types broken down into 72% Full Time, and 28% Contract. Highlights an 100% In-person job distribution.

Cobol / Mainframe Developer

Milwaukee, WI • On-site

Ampcus Inc
IT Services • 1 - 5K employees

$48.25 - $62/hr

Full-time

Re-posted 11 days ago


Job description

Job Summary:
Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services. They are seeking a Cobol / Mainframe Developer to work within Card Management Systems, focusing on backend business logic and coding experience. The role requires strong expertise in Cobol programming and Mainframe environments, along with experience in payment transactions.
Responsibilities:
• Must need to have an experience with Mainframe.
• Need a strong experience with Cobol Programming and JCL.
• Will be responsible for handling backend business logics.
• Experience with Payment Transactions or Debit Transactions area would be nice to have.
• Must need to have hands-on coding experience.
• Previous Client experience is a great to have.
Qualifications:
Required:
• Bachelor's degree in Computer Science, Information Technology or equivalent experience.
• 8 years of software development engineering experience.
• Working knowledge in Linux, UNIX & z/OS operating systems.
• Proficient with Mainframe Development as well as modern Object-Oriented development.
• Need to be able to develop in both a legacy Mainframe TSO environment and also a modern server/container environment using common IDE’s and development tools.
• Knowledge and experience in transformation/modernization of processing high volumes of data via Mainframe processing to scalable On-prem Distributed or Cloud processing via microservices and containers.
• Knowledge of the following: File Transmission (FTP/NDM) & batch processing in very high-volume settings is required.
• Experience in technical design writing and documentation.
• Work independently and collaborate in team design sessions.
• Strong unit testing skills.
• Flexibility to be on on-call support, as required.
• Excellent written and verbal communication skills.
• Experience in Financial Services industry.
Preferred:
• Experience with Payment Transactions or Debit Transactions area would be nice to have.
• Previous Client experience is a great to have.
• Knowledge of event driven architecture and common event processing models and platforms is desired.
• Experience in decomposing and rewriting legacy processes and systems into more modern infrastructures a plus.
• Familiarity in microservice architectures and containers (Kubernetes/K8s, OpenShift, Docker) a plus.
• Familiarity in processing in a cloud (Azure, AWS) environment a plus.
• Familiarity in Domain Driven Design a plus.
Company:
Ampcus is a global business, technology consulting and an staff augmentation firm specializing in AI/ML,digital solutions, Cybersecurity & Risk management, Testing, Forensics & Fraud services and human capital management. Founded in 2004, the company is headquartered in Chantilly, USA, with a team of 1001-5000 employees. The company is currently Late Stage.

Ampcus logo

About Ampcus

Sourced by ZipRecruiter

Ampcus Inc. is a ISO 20000, ISO 27000, ISO 9001, CMMI DEV/3 SM and CMMI SVC/3 SM certified global provider of a broad range of Technology and Business consulting services. From strategy to execution, our disciplined yet flexible approach starts and ends with our clients. By listening hard and working harder, client goals become our goals. Their success is our satisfaction. It’s why our clients sleep well at night. We believe that the success of an engagement is determined by strong project management, as well as clear communication and mutual commitment working collaboratively. Our methodology begins with listening to the customer about their needs, then working with their team to gain a clear understanding of the requirements, while providing knowledge transfer of best practices for the organization.

Industry

It services

Company size

1,001 - 5,000 Employees

Headquarters location

Chantilly, VA, US

Year founded

2004