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Mainframe Developer Jobs in Milwaukee, WI (NOW HIRING)

FIS

Engineer Sr Lead, Systematics

Milwaukee, WI

Demonstrated ability to adapt to different mainframe/client environments and mainframe tool sets. Bonus if you have: * Minimum of 10 years experience working on FIS Systematics applications with ...

mcts

SOFTWARE DEVELOPER

Milwaukee, WI · On-site

The Software Developer will provide full application life cycle development including but not limited to analysis, design, programming, system implementation, training, and documentation for ...

mcts

SOFTWARE DEVELOPER

Milwaukee, WI

The Software Developer will provide full application life cycle development including but not limited to analysis, design, programming, system implementation, training, and documentation for ...

Atria Group LLC

Application Developer

Milwaukee, WI · On-site

Our company provides application analysis, design, development and programming, software engineering, systems development, testing, integration, and implementation, and management consulting services ...

GARGI TECHNOLOGIES INC

Software Developer

Milwaukee, WI · On-site

Java Software Developer Location: Tennessee,TN Experience: 1-5 Years Employment Type: Full-Time Work Authorization: About the Role We are looking for a talented and motivated Java Software Developer ...

KE Staffing

AI Developer

Milwaukee, WI · On-site

$53.75 - $71/hr

Ability to mentor and lead engineers in AI-first development methodologies, fostering a culture of innovation and technical excellence. * Technical expertise in AI integration across natural language ...

idexcel

Software Developer II

Milwaukee, WI · On-site

Developer II is responsible for the development of software. Essential Responsibilities Duties include (but are not limited to): As a software developer understand needs and translate those to viable ...

LRS

Software Developer

Milwaukee, WI

$50 - $70/hr

Codeworks, an LRS company, is seeking a Software Developer who enjoys solving complex challenges, collaborating with diverse teams, and making a meaningful impact through technology and innovation ...

New

Eaton

Senior Optimization Developer

Waukesha, WI · On-site

$86K - $126K/yr

Are you passionate about programming, automation, and solving complex technical challenges? This is more than a traditional software development role. You'll work on highly complex optimization ...

Nutanix

Senior Optimization Developer

Waukesha, WI · On-site

$86 - $126/hr

Are you passionate about programming, automation, and solving complex technical challenges? This is more than a traditional software development role. You'll work on highly complex optimization ...

Advicent Solutions

Software Developer II

Milwaukee, WI · On-site

InvestCloud (formerly Advicent) is looking for a talented and motivated Software Developer II to join our team. You will deliver and support our web-based financial planning applications using ...

Cliftonlarsonallen

Framework Developer Senior

Milwaukee, WI · On-site

$53.75 - $71/hr

CLA is growing and seeking to hire an experienced Framework Developer Senior to join our talented Information Technology team. The position offers growth, flexibility and a collaborative work ...

Advicent Solutions

Senior Software Developer

Milwaukee, WI · On-site

$53.75 - $71/hr

InvestCloud (formerly Advicent) is looking for a talented and motivated Senior Software Developer to join our team. You will deliver and support our web-based financial planning applications using ...

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All JobsMainframe Developer JobsMainframe Developer Jobs in Milwaukee, WI

Mainframe Developer information

See Milwaukee, WI salary details

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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.

Engineer Sr Lead, Systematics

Worldpay, Inc.

Milwaukee, WI

Full-time

Re-posted 27 days ago

Job description

Job Description

About FIS

Are you curious, motivated, and forward-thinking? At FIS you'll have the opportunity to work on some of the most challenging and relevant issues in financial services and technology. Our talented people empower us, and we believe in being part of a team that is open, collaborative, entrepreneurial, passionate and above all fun.

About the team

LFI Systematics (SI) Leveraged Professional Services support for LFI Core Banking Clients that run the Systematics Suite of applications.

What you will be doing

  • Design, code, test, implement, maintain and support Systematics applications software that is delivered on time and within budget.

  • Work closely with customers, business analysts and team members to understand business requirements that drive analysis and design of quality technical solutions ensuring alignment with business and IT strategies and complying with FIS architectural standards.

What you bring

  • Demonstrated expert level knowledge of the FIS Systematics applications.

  • Demonstrated ability to design, code, test, and lead highly complex Systematics technical solutions.

  • Demonstrated ability to lead, mentor, and provide guidance to junior level technicians.

  • Demonstrated ability to adapt to different mainframe/client environments and mainframe tool sets.

Bonus if you have:

  • Minimum of 10 years experience working on FIS Systematics applications with demonstrated increasing of job responsibilities.

What we offer you

  • A multifaceted job with a high degree of responsibility and a broad spectrum of opportunities.

  • A broad range of professional education and personal development possibilities - FIS is your final career step!

  • A competitive salary and benefits.

  • A broad range of professional education and personal development opportunities.

  • Varied and challenging work to help you grow your technical skillset.

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Privacy Statement

FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.

EEOC Statement

FIS is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, marital status, genetic information, national origin, disability, veteran status, and other protected characteristics. The EEO is the Law poster is available here supplement document available here


For positions located in the US, the following conditions apply. If you are made a conditional offer of employment, you will be required to undergo a drug test. ADA Disclaimer: In developing this job description care was taken to include all competencies needed to successfully perform in this position. However, for Americans with Disabilities Act (ADA) purposes, the essential functions of the job may or may not have been described for purposes of ADA reasonable accommodation. All reasonable accommodation requests will be reviewed and evaluated on a case-by-case basis.

Sourcing Model

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.

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