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Mainframe Developer Jobs in Milwaukee, WI (NOW HIRING)

Sonsoft Inc

Mainframe Architect

Milwaukee, WI

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 ...

Sonsoft Inc

Mainframe Architect

Milwaukee, WI

... (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 ...

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 ...

TIER4 GROUP

Software Integration Engineer

Franklin, WI · Hybrid

$96K - $130K/yr

Proficiency in IBM MQ (Linux, MQ Appliance, Mainframe MQ preferred). * Strong skills in Python, Java, Shell Scripting, and Git. * Experience in reverse engineering and system analysis. * Familiarity ...

Fiserv, Inc.

Quality Assurance Engineer

Milwaukee, WI · On-site

... mainframe systems, on-prem and cloud environments. Detect, diagnose, and resolve performance ... Using GIT, GITHub, Jenkins, Azure DevOps, and Gitlab; Working with QA methodologies and automation ...

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Mainframe Developer information

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How much do mainframe developer jobs pay per hour?

As of Aug 22, 2026, the average hourly pay for mainframe developer 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 developer?

Mainframe Developers are specialized software engineers who design, develop, maintain, and troubleshoot applications on mainframe computer systems, such as IBM's z/OS. They typically work with languages like COBOL, JCL, and CICS, and are responsible for ensuring the performance, security, and reliability of mission-critical business applications. Mainframe Developers are commonly employed in industries like banking, insurance, and government, where large-scale, high-volume transaction processing is essential.

What are the key skills and qualifications needed to thrive as a mainframe developer?

To thrive as a Mainframe Developer, you need expertise in programming languages such as COBOL, JCL, and SQL, along with a strong understanding of mainframe operating systems and batch processing concepts. Familiarity with tools like IBM z/OS, DB2, CICS, and version control systems is typically required, and certifications from IBM or related organizations can be beneficial. Strong problem-solving abilities, attention to detail, and effective communication skills help Mainframe Developers excel in troubleshooting and collaborating with cross-functional teams. These skills are crucial for maintaining, optimizing, and modernizing legacy systems that are vital to many large organizations’ operations.

What are some common challenges mainframe developers face when integrating legacy systems with modern applications?

Mainframe Developers often encounter challenges such as ensuring compatibility between legacy systems and newer technologies, managing data migration without disrupting business operations, and maintaining the security of sensitive data. Effective communication with cross-functional teams, such as application developers and infrastructure engineers, is essential to address these challenges. Staying updated on both mainframe and modern programming practices helps ease integration and ensures long-term system reliability.

What is the difference between Mainframe Developer vs Mainframe Analyst?

AspectMainframe DeveloperMainframe Analyst
Primary RoleDesigning, coding, and testing mainframe applicationsAnalyzing and maintaining existing mainframe systems
Skills & CertificationsCOBOL, JCL, DB2, certifications like IBM Certified DeveloperCOBOL, JCL, system analysis, troubleshooting skills
Work EnvironmentDevelopment teams, coding in mainframe environmentsSupport teams, system analysis, user support
Industry UsageFinancial services, insurance, government agenciesFinancial institutions, healthcare, government agencies

While Mainframe Developers focus on creating and implementing mainframe applications, Mainframe Analysts primarily analyze, troubleshoot, and maintain existing systems. Both roles require similar technical skills and often work within the same industries, but their core responsibilities differ in development versus support and analysis.

Is a mainframe developer a good career?

A mainframe developer is a specialized IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL, but it may require ongoing learning of evolving mainframe tools and certifications. Overall, it can be a good career for those interested in enterprise computing and system stability.

Is a mainframe developer hard to learn?

Mainframe developers typically need to learn specialized programming languages like COBOL and understand mainframe environments, which can have a steep learning curve for beginners. However, with prior programming experience and training, acquiring the necessary skills is achievable, and many employers offer on-the-job training or certification programs.

Is mainframe developer still in demand?

Mainframe developers are still in demand in industries such as finance, insurance, and government, where legacy systems remain critical. They typically work with COBOL, JCL, and mainframe environments, and demand depends on the organization's reliance on mainframe technology and ongoing maintenance needs.

What are the most commonly searched types of Mainframe Developer jobs in Milwaukee, WI?

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

What are popular job titles related to Mainframe Developer jobs in Milwaukee, WI?

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

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

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

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

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

Mainframe Developer jobs near you
Infographic showing various Mainframe Developer job openings in Milwaukee, WI as of August 2026, with employment types broken down into 81% Full Time, 5% Part Time, and 14% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution, with an average salary of $109,388 per year, or $52.6 per hour.

Mainframe Architect

Sonsoft Inc

Milwaukee, WI

Full-time

Re-posted 5 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
  • 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..
  • Experience in Insurance domain.
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 7 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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