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Mainframe Jobs in Wisconsin (NOW HIRING)

U.S. Bank

z/OS Systems Engineer

Brookfield, WI · On-site

They are seeking a z/OS Systems Engineer with extensive mainframe experience to contribute to their technology initiatives by supporting and modernizing their mainframe environment. Responsibilities ...

US Bank

z/OS Systems Engineer

Brookfield, WI

Bank is seeking a z/OS Systems Programmer that has extensive experience in mainframe technologies with an emphasis on installation/upgrading, tuning, and troubleshooting of z/OS and third-party ...

Saxon Global

Sr Software Engineer / Lead

Madison, WI · On-site

Position: Sr Full Stack Developer/ Lead (.Net Core, Mainframe (cobol) & Azure) Location - Madison WI Duration - 9+ months Job Responsibilities: • 10+ years of experience in C#, .NET Core / .NET ...

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$10

$53

$73

How much do mainframe jobs pay per hour?

As of Jun 11, 2026, the average hourly pay for mainframe in Wisconsin is $53.88, according to ZipRecruiter salary data. Most workers in this role earn between $47.55 and $61.15 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Mainframe Developer, and why are they important?

To excel as a Mainframe Developer, a strong background in COBOL, JCL, mainframe operating systems (like z/OS), and database management is essential, often supported by a degree in computer science or a related field. Familiarity with tools such as IBM DB2, CICS, VSAM, and mainframe version control systems is typically required, and certifications like IBM Certified System Programmer can be advantageous. Analytical thinking, problem-solving abilities, and effective communication are important soft skills for identifying issues and collaborating with cross-functional teams. These skills ensure reliable maintenance, development, and modernization of mission-critical legacy systems that support large-scale business operations.

What Is a Mainframe Application Developer Job Description?

The job description of a mainframe application developer is to sustain the central data processing system, or mainframe. Common duties include designing applications, analyzing data, running reports, and deploying mainframe applications. This job requires a great deal of collaboration to keep the mainframe going and a strong understanding of mainframe languages. A key part of this role is to align the design of the mainframe with changing business needs.

What are mainframes and what do they do?

Mainframes are powerful computers used mainly by large organizations for critical applications, bulk data processing, large-scale transaction processing, and enterprise resource planning. They are known for their reliability, scalability, and security, making them essential for industries like banking, healthcare, and government. Mainframes can handle thousands of users and transactions simultaneously, supporting the core operations of many businesses.

What are some typical challenges faced by mainframe professionals when integrating legacy systems with modern technologies?

Mainframe professionals often encounter challenges when integrating legacy systems with newer technologies, such as ensuring data compatibility, managing security protocols, and minimizing downtime during migration. These tasks require a deep understanding of both the existing mainframe architecture and the modern platforms being introduced. Collaboration with cross-functional teams—including application developers, security specialists, and project managers—is essential to ensure seamless integration and to address potential issues proactively. Staying updated on the latest integration tools and best practices also helps in overcoming these challenges efficiently.

What is the difference between Mainframe vs Mainframe Developer?

AspectMainframeMainframe Developer
Primary RoleMaintains and manages mainframe hardware and systemsDesigns, develops, and tests mainframe applications
Skills & CertificationsKnowledge of mainframe hardware, OS, and basic scriptingProficiency in COBOL, JCL, and mainframe programming languages
Work EnvironmentData centers, enterprise IT departmentsDevelopment teams within mainframe environments
Industry UsageUsed by organizations with legacy systemsDevelops and maintains those legacy systems

While Mainframe professionals focus on maintaining the hardware and system infrastructure, Mainframe Developers specialize in creating and updating mainframe applications. Both roles require knowledge of mainframe environments, but their responsibilities differ significantly within the same industry.

More about Mainframe jobs
What are the most commonly searched types of Mainframe jobs in Wisconsin? The most popular types of Mainframe jobs in Wisconsin are:
What are popular job titles related to Mainframe jobs in Wisconsin? For Mainframe jobs in Wisconsin, the most frequently searched job titles are:
What job categories do people searching Mainframe jobs in Wisconsin look for? The top searched job categories for Mainframe jobs in Wisconsin are:
What cities in Wisconsin are hiring for Mainframe jobs? Cities in Wisconsin with the most Mainframe job openings:
Mainframe jobs near you
Infographic showing various Mainframe job openings in Wisconsin as of June 2026, with employment types broken down into 78% Full Time, 4% Part Time, 16% Contract, and 2% Nights. Highlights an 92% In-person, 2% Hybrid, and 6% Remote job distribution, with an average salary of $112,065 per year, or $53.9 per hour.
Mainframe Automation Testing (GC--USC)

Mainframe Automation Testing (GC--USC)

Sonsoft Inc

Milwaukee, WI • On-site

Full-time

Posted 7 days ago

Job description

Company Description

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.

Job Description

Job Description:-

  • JavaScript
  • Selenium (aka nightwatch.js, protractor, web driver, browser automation)
  • Experience in Shell scripting
  • 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 client interfacing skills
  • Experience and desire to work in a Global delivery environment
  • Act as independent lead for test automation and define the automation framework
  • Ability to conduct POC demonstrate to stakeholders independently.

Qualifications

Basic Qualifications :-

  • 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 2 years of experience within the Information Technologies.
Additional Information

** U.S. citizens and those authorized to work in the U.S. are encouraged to apply. We are unable to sponsor at this time.

Note:-

  1. This is a Fulltime job for you
  2. Only US Citizen, Green Card Holder, TN Visa, GC-EAD, H4-EAD & L2-EAD can apply.
  3. No OPT-EAD & H1B Consultants please.
  4. Please mention your Visa Status in your email or resume.
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

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