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Mainframe Jobs in Milwaukee, WI (NOW HIRING)

Sonsoft Inc

Mainframe Architect

Milwaukee, WI · On-site

Company Description SonSoft is an IT Staffing and consulting firm and duly organized under the laws of the Commonwealth of Georgia. We are growing at a steady pace specializing in the fields of ...

US Bank

z/OS Systems Engineer

Brookfield, WI · On-site

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 ...

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Mainframe information

See Milwaukee, WI salary details

$9

$52

$71

How much do mainframe jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for mainframe 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 is a mainframe?

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 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 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.

Is mainframe a good career option?

Mainframe careers involve working with large-scale computer systems used by many organizations for critical applications. The role typically requires knowledge of programming languages like COBOL, skills in system maintenance, and certifications such as IBM Certified System Programmer. It offers stable employment opportunities and competitive salaries due to the specialized skill set involved.
More about Mainframe jobs

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The most popular types of Mainframe jobs in Milwaukee, WI are:

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For Mainframe jobs in Milwaukee, WI, the most frequently searched job titles are:

What job categories do people searching Mainframe jobs in Milwaukee, WI look for?

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

What cities near Milwaukee, WI are hiring for Mainframe jobs?

Cities near Milwaukee, WI with the most Mainframe job openings:

Mainframe jobs near you
Infographic showing various Mainframe job openings in Milwaukee, WI as of August 2026, with employment types broken down into 50% Full Time, 2% Temporary, and 48% Contract. Highlights an 86% In-person, and 14% Remote job distribution, with an average salary of $109,388 per year, or $52.6 per hour.

Mainframe Architect

Sonsoft Inc

Milwaukee, WI • On-site

Full-time

Re-posted 20 days ago

Job description

Company Description

SonSoft is an IT Staffing and consulting firm and duly organized under the laws of the Commonwealth of Georgia. We are growing at a steady pace specializing in the fields of Software Development, Software Consultancy and Information Technology Enabled Services.

Job Description

Preferred

At least 8 years of experience with technology understanding of SCM Repositories - IBM RDz tools or equivalent

AT least 7 years of experience with Code quality, code review, static analysis and unit test tools - RD&T, Compuware workbench

Build & CI pipeline management tools - Ability to conceptualize, design and execute a customized end-to-end CI/CD pipeline and workflow solution (DevOps)

Familiarity and experience with design, setup and management of Dev, QA & Production Environments for high availability distributed applications with very large user base

Leadership and Management skills:

Automation scripting frameworks

Experience in defining new architectures and ability to drive an independent project from an architectural stand point

Analytical skills

Experience in Insurance domain.

Experience and desire to work in a management consulting environment that requires regular travel

Qualifications

Qualifications Basic

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 7 years of experience with Information technology.

Additional Information

** U.S. Citizens and those who are authorized to work independently in the United States are encouraged to apply. We are unable to sponsor at this time.
Note:-
1. This is a Full-Time & Permanent job opportunity for you.
2. Only US Citizen, Green Card Holder, GC-EAD, H4-EAD & L2-EAD can apply.
3. No OPT-EAD, H1B & TN candidates 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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