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Senior Mainframe Developer Jobs in Wisconsin (NOW HIRING)

Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ... Collaborate with senior leadership to secure executive sponsorship and organizational buy-in for ...

Senior CA-Gen Developer

Madison, WI · On-site

$55 - $72.50/hr

Senior CA-Gen Developer Onsite in Madison, WI 12+ month Video Interview Need local to Wisconsin ... a mainframe DB2 client-server environment * Ability to independently perform a variety of ...

WI · On-site

... of mainframe, batch, and cloud-native applications in AWS and Azure, using Java and Spring Boot ... You will mentor engineers, steer large-scale initiatives, and collaborate with senior management to ...

WI · On-site

$180 - $230/hr

Manages and oversees all design, development, and maintenance of mainframe and distributed ... Advises senior management on technical strategy.* Researches and recommends new technologies.

WI · On-site

$231K/yr

Manages and oversees all design, development, and maintenance of mainframe and distributed ... Advises senior management on technical strategy.* Researches and recommends new technologies.

Sr. Java Developer

Madison, WI

$57.75 - $73.50/hr

Experience building and deploying large scale Java web applications Conceptual knowledge of information technologies and methodologies in mainframe, midrange, Web and PC computing environments ...

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 ...

Senior Mainframe Developer information

See Wisconsin salary details

$38

$58

$67

How much do senior mainframe developer jobs pay per hour?

As of Aug 2, 2026, the average hourly pay for senior mainframe developer in Wisconsin is $58.19, according to ZipRecruiter salary data. Most workers in this role earn between $54.62 and $63.56 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior Mainframe Developer, and why are they important?

To thrive as a Senior Mainframe Developer, you need deep expertise in mainframe programming languages (like COBOL, JCL, and PL/I), systems analysis, and a strong understanding of legacy application architectures, typically supported by a degree in computer science or related experience. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is essential, along with relevant certifications like IBM Certified System Programmer. Excellent problem-solving, communication, and leadership skills help you collaborate effectively and mentor junior developers. These skills are crucial for maintaining mission-critical systems, ensuring reliability, and guiding modernization efforts in complex enterprise environments.

What are some common challenges faced by Senior Mainframe Developers when integrating legacy systems with modern technologies?

Senior Mainframe Developers often encounter challenges when integrating legacy mainframe systems with newer technologies such as cloud platforms, APIs, or microservices. These challenges include ensuring data consistency, maintaining system security, and minimizing downtime during migrations. Collaboration with cross-functional teams, such as infrastructure engineers and application developers, is key to developing seamless integration solutions. Staying up-to-date with modernization tools and best practices can help address these complexities and support the organization's digital transformation goals.

What are Senior Mainframe Developers?

Senior Mainframe Developers are experienced professionals who design, develop, and maintain mainframe systems—large-scale computers used by organizations for critical applications, bulk data processing, and enterprise resource planning. They are proficient in languages like COBOL, JCL, and Assembler, and often work with databases and transaction processing systems. Their responsibilities include troubleshooting system issues, optimizing performance, mentoring junior developers, and ensuring the reliability and security of mainframe operations.
What are the most commonly searched types of Mainframe Developer jobs in Wisconsin? The most popular types of Mainframe Developer jobs in Wisconsin are:
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What job categories do people searching Senior Mainframe Developer jobs in Wisconsin look for? The top searched job categories for Senior Mainframe Developer jobs in Wisconsin are:
What cities in Wisconsin are hiring for Senior Mainframe Developer jobs? Cities in Wisconsin with the most Senior Mainframe Developer job openings:
Infographic showing various Senior Mainframe Developer job openings in Wisconsin as of July 2026, with employment types broken down into 81% Full Time, 6% Part Time, 1% Temporary, and 12% Contract. Highlights an 83% Physical, 4% Hybrid, and 13% Remote job distribution, with an average salary of $121,038 per year, or $58.2 per hour.

Sr Mainframe Programmer Hybrid

Tektree Systems Inc.

Brookfield, WI • On-site

Other

Re-posted 2 hours ago


Job description

Role is hybrid based out of any of the following locations: Brookfield, WI Richfield, MN Chicago, IL Irving, TX Atlanta, GA

Job Requirements:
- Resource should be hands on in Mainframe Technologies COBOL, VSAM, DB2, CICS, JCL
- Having knowledge in GIT and IDZ will be an additional advantage

Years of experience required: 8+