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Full Time Java Mainframe Developer Jobs in Milwaukee, WI

Sonsoft Inc

Java With Docker

Milwaukee, WI · On-site

$50.25 - $65/hr

At least 11 years of experience in Java Skills * Experience in Docker Container * Knowledge of ... This is a Full-Time / Permanent job opportunity . Only US Citizen, Green Card Holder can apply.

Sonsoft Inc

Java With Docker (GC--USC)

Milwaukee, WI · On-site

$50.25 - $65/hr

At least 11 years of experience in Java Skills * Experience in Docker Container * Knowledge of ... Note:- * This is a Full-Time Permanent job opportunity for you. * Only US Citizen, Green Card ...

Sonsoft Inc

Mainframe Architect

Milwaukee, WI

... solution (DevOps) Familiarity and experience with design, setup and management of Dev, QA ... Note:- 1. This is a Full-Time & Permanent job opportunity for you. 2. Only US Citizen, Green Card ...

Sonsoft Inc

Mainframe Architect

Milwaukee, WI · On-site

... solution (DevOps). * Familiarity and experience with design, setup and management of Dev, QA ... This is a Fulltime job for you * Only US Citizen, Green Card Holder, TN Visa, GC-EAD , H4-EAD & L2 ...

Sonsoft Inc

SFDC Developer

Milwaukee, WI · On-site

Single Sign On & Java experience is a big plus * 2-3 years' experience in translate functional ... Note:- * This is a Full-Time & Permanent job opportunity for you. * Only US Citizen , Green Card ...

Fiserv, Inc.

Quality Assurance Engineer

Milwaukee, WI · On-site

... mainframe systems, on-prem and cloud environments. Detect, diagnose, and resolve performance ... Working with Object-Oriented programming languages including Java or C#; Scripting with Python and ...

Sonsoft Inc

SFDC (Developer II)

Milwaukee, WI · On-site

Single Sign On & Java experience is a big plus * 2-3 years' experience in in translate functional ... This is a Full-Time & Permanent job opportunity for you. 2.Only US Citizen, Green Card Holder, GC ...

Sonsoft Inc

Salesforce Developer

Milwaukee, WI

$54.75 - $72.50/hr

Java experience is a big plus * At least 2 years of experience in in translate functional ... Note:- * This is a Full-Time Permanent job opportunity for you. * Only US Citizen, Green Card ...

Sonsoft Inc

Salesforce Developer

Milwaukee, WI · On-site

$54.75 - $72.50/hr

Java experience is a big plus * At least 2 years of experience in in translate functional ... This is a Full-Time Permanent job opportunity for you. * Only US Citizen, Green Card Holder, TN ...

Sonsoft Inc

Salesforce Developer

Milwaukee, WI · On-site

$54.75 - $72.50/hr

Java experience is a big plus * At least 2 years of experience in in translate functional ... This is a Full-Time Permanent job opportunity for you. * Only US Citizen, Green Card Holder, TN ...

Crystora Dynamics Limited

Software Engineer

OR · On-site +1

S. Only) Job Type: Full-Time Salary: Competitive, based on experience Join Crystora Dynamics ... Java, C++, or similar. - Develop APIs and integrate third-party services to enhance system ...

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Full Time Java Mainframe Developer information

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$9

$52

$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:

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.

Java With Docker

Milwaukee, WI • On-site

Sonsoft Inc
IT Services • 51 - 200 employees
Learn more about Sonsoft Incexternal

$50.25 - $65/hr

Full-time

Re-posted 10 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 11 years of experience in technology consulting, enterprise and solutions architecture and architectural frameworks
  • At least 11 years of experience in Java Skills
  • Experience in Docker Container
  • Knowledge of GitLab and Queuing preferred
  • Experience in providing advanced technology advisory services.
  • Understanding of market and technology trends.
  • Analytical skills
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 11 years of experience within the Information Technologies.
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.

This is a Full-Time / Permanent job opportunity.

Only US Citizen, Green Card Holder can apply.

.

** All your information will be kept confidential according to EEO guidelines.


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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