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Full Time Java Mainframe Developer Jobs in Milwaukee, WI

Georgia IT, Inc.

Mainframe Engineer-Franklin, WI

Franklin, WI · On-site

$45.50 - $58.50/hr

NET or Java • If no programming experience in .NET or Java, must have CI/CD experience • Experience with mainframe engineering best practices including: analyzing, designing, developing, and ...

Sonsoft Inc

Java Frontend Developer

Milwaukee, WI · On-site

At least 5 years of hands-on experience with thorough understanding of Java/J2EE technologies ... This is a Full-Time & Permanent job opportunity for you. * Only US Citizen, Green Card Holder, GC ...

Sonsoft Inc

Java UI Frontend Developer

Milwaukee, WI · On-site

At least 5 years of hands-on experience with thorough understanding of Java/J2EE technologies ... This is a Full-Time & Permanent job opportunity for you. * Only US Citizen, Green Card Holder, GC ...

Sonsoft Inc

Mainframe Automation Testing

Milwaukee, WI · On-site

Jenkins * 2 yrs of SDET knowledge in PL1 (Mainframe) * 2 yrs of Insurance knowledge * Framework ... This is a Full-Time / Permanent job opportunity . Only US Citizen, Green Card Holder, GC-EAD,H4-EAD ...

Sonsoft Inc

Mainframe Automation Testing

Milwaukee, WI · On-site

Jenkins * 2 yrs of SDET knowledge in PL1 (Mainframe) * 2 yrs of Insurance knowledge * Framework ... This is a Fulltime job for you * Only US Citizen, Green Card Holder, TN Visa, GC-EAD , H4-EAD & L2 ...

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 ...

Sonsoft Inc

Java Frontend UI

Milwaukee, WI · On-site

Application Development experience in Object Oriented programming and design skills * Proficient in ... This is a Full-Time Permanent job opportunity for you. * Only US Citizen, Green Card Holder, TN ...

Sonsoft Inc

Java Frontend UI

Milwaukee, WI · On-site

Application Development experience in Object Oriented programming and design skills * Proficient in ... Note:- * This is a Full-Time Permanent job opportunity for you. * Only US Citizen, Green Card ...

Sonsoft Inc

Java Frontend UI

Milwaukee, WI · On-site

Application Development experience in Object Oriented programming and design skills * Proficient in ... This is a FULL TIME job oppurtunity. * Only US Citizen , Green Card Holder , GC-EAD , H4-EAD , L2 ...

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Full Time Java Mainframe Developer information

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$71

How much do full time java mainframe developer jobs pay per hour?

As of Sep 15, 2026, the average hourly pay for full time java 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 full time Java mainframe developer?

A Full Time Java Mainframe Developer is a professional who specializes in developing, maintaining, and enhancing applications that run on mainframe systems using the Java programming language. These developers often integrate modern Java-based applications with legacy mainframe systems, ensuring seamless data flow and system compatibility. Their responsibilities may include coding, debugging, testing, and optimizing applications for performance on mainframe platforms, as well as collaborating with other IT professionals to support business operations. This role typically requires knowledge of both Java and mainframe technologies like COBOL, JCL, and CICS.

What are some common challenges faced by full time Java mainframe developers when integrating modern Java applications with legacy mainframe systems?

A common challenge for Full Time Java Mainframe Developers is ensuring seamless communication between modern Java-based applications and existing mainframe systems, which often use older technologies and data formats. Developers need to address issues such as data mapping, protocol compatibility, and performance optimization to maintain reliable and efficient integration. Additionally, understanding both Java and mainframe environments is crucial, as troubleshooting can require knowledge of mainframe batch jobs, COBOL code, or CICS transactions alongside Java frameworks. Collaborative work with mainframe specialists and clear documentation are essential for overcoming these challenges.

What are the key skills and qualifications needed to thrive as a full time Java mainframe developer, and why are they important?

To thrive as a Full Time Java Mainframe Developer, you need proficiency in Java programming, mainframe technologies like COBOL or JCL, and a relevant degree in computer science or a related field. Familiarity with mainframe development tools (e.g., IBM z/OS, TSO/ISPF), version control systems, and sometimes certifications such as IBM Certified System Programmer are typically required. Strong problem-solving, communication, and teamwork skills help developers translate business needs into robust mainframe solutions and collaborate across diverse IT teams. These capabilities ensure the reliable modernization, maintenance, and integration of enterprise-level legacy systems with new Java applications.

What is the difference between Full Time Java Mainframe Developer vs Mainframe Developer?

AspectFull Time Java Mainframe DeveloperMainframe Developer
Required SkillsJava, Mainframe (COBOL, JCL), DB2, CICSCOBOL, JCL, DB2, CICS
Work EnvironmentBanking, Finance, Insurance sectors with Java and Mainframe integrationLegacy systems in banking, government, insurance
CertificationsJava certifications, Mainframe certifications (e.g., IBM Certified)Mainframe certifications (e.g., IBM Certified)

Full Time Java Mainframe Developers combine Java programming with traditional Mainframe skills, working on integrated systems in finance and banking. Mainframe Developers focus primarily on legacy systems using COBOL and JCL. The former often requires Java certifications, while the latter emphasizes Mainframe-specific credentials. Both roles are vital in industries maintaining legacy systems but differ in technical focus and skill set.

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

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

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

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

Full Time Java Mainframe Developer jobs near you
Infographic showing various Full Time Java Mainframe Developer job openings in Milwaukee, WI as of September 2026, with employment types broken down into 82% Full Time, 9% Part Time, and 9% Contract. Highlights an 78% Physical, 4% Hybrid, and 18% Remote job distribution, with an average salary of $109,388 per year, or $52.6 per hour.

Mainframe Engineer-Franklin, WI

Franklin, WI • On-site

Georgia IT, Inc.
IT Services • 51 - 200 employees
Learn more about Georgia IT, Inc.external

$45.50 - $58.50/hr

Full-time

Re-posted 4 days ago

Job description

Job Summary:
Georgia IT, Inc. is seeking a Mainframe Engineer to join their team in Franklin, WI. The role involves designing, developing, and testing program units while ensuring adherence to SDLC standards and applying mainframe engineering best practices.
Responsibilities:
• Design, develop, and test program units
• Enhance and maintain existing code
• Prepare and maintain documentation
• Ensure code complies with SDLC standards
• Apply mainframe engineering best practices in order to analyze, design and develop deploy and support software solutions, and/or infrastructure implementations/upgrades.
• Develop software and systems on test driven development and continuous integration practices; establish monitoring and automation processes.
• Work as part of a project team and coordinate activities with others teams or team members across all phases of SDLC
Qualifications:
Required:
• 3-7+ years of experience in development (lead experience desired)
• Expertise in mainframe programming languages: COBOL and PL1
• Development experience in .NET or Java
• If no programming experience in .NET or Java, must have CI/CD experience
• Experience with mainframe engineering best practices including: analyzing, designing, developing, and deploying and supporting software solutions and/or infrastructure implementations/upgrades.
• Experience with application installation and configuration in all environments (development, test, stage, production)
• Experience with Source Code management
Company:
Georgia IT, Inc. provides IT Consulting for a wide range of IT services and custom build turn-key enterprise solutions. Founded in 2007, the company is headquartered in Alpharetta, USA, with a team of 51-200 employees. The company is currently Growth Stage.
Georgia IT logo

About Georgia IT

Sourced by ZipRecruiter

A PROFESSIONAL SERVICES ORGANIZATION WITH A VISION OF DELIVERING SIMPLE AFFORDABLE, SUSTAINABLE SOLUTIONS FOR COMPLEX PROBLEMS WITH INTEGRITY. OUR GOAL IS TO ACHIEVE ALL THIS IN A COLLABRATIVE APPROACH WITH ALL PARTIES INVOLVED IN DELIVERING SOLUTIONS/PRODUCTS.

Industry

It services

Company size

51 - 200 Employees

Headquarters location

Alpharetta, GA, US

Year founded

2007

Social media

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