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Senior Mainframe Software Engineer Jobs in Milwaukee, WI

Highbrow LLC

Mainframe Sr Developer

Milwaukee, WI · On-site

$90 - $120/hr

Mainframe Sr Developer Job ID: 2024-13158 Job Location: Milwaukee, WI or Lincoln, NE (100% Onsite ... Play a key role in developing industry leading software * Develop and test complex technical and ...

Georgia IT, Inc.

Mainframe Engineer-Franklin, WI

Franklin, WI · On-site

$45.50 - $58.50/hr

Georgia IT, Inc. is seeking a Mainframe Engineer to join their team in Franklin, WI. The role ... software solutions, and/or infrastructure implementations/upgrades. • Develop software and ...

Ampcus Inc

Cobol / Mainframe Developer

Milwaukee, WI · On-site

$48.25 - $62/hr

... of software development engineering experience. • Working knowledge in Linux, UNIX & z/OS ... with Mainframe Development as well as modern Object-Oriented development. • Need to be able to ...

Accenture

Mainframe Specialist

Milwaukee, WI · On-site

$70K - $196K/yr

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 ...

Wipro Limited

Mainframe Developer

Brookfield, WI · On-site

$60K - $135K/yr

Job Title: Mainframe Developer City: Brookfield State/Province: Wisconsin Posting Start Date: 6/29/26 Wipro Limited (NYSE: WIT, BSE: 507685, NSE: WIPRO) is a leading technology services and ...

ClifyX

Mainframe Developer - Brookfield, WI

Brookfield, WI · On-site

$46.50 - $59.75/hr

ClifyX is seeking a Mainframe Developer to join their team. The role involves full life cycle development of business applications, supporting and modifying existing applications, and driving the ...

Husch Blackwell Llp

Senior Software Engineer

Milwaukee, WI · On-site +1

$120K - $158K/yr

The Senior Software Engineer designs, builds, and maintains the technical systems and application infrastructure that power high-quality, human-centered information experiences. This role is ...

Husch Blackwell LLP

Senior Software Engineer

Milwaukee, WI · On-site +1

$120K - $158K/yr

The Senior Software Engineer designs, builds, and maintains the technical systems and application infrastructure that power high-quality, human-centered information experiences. This role is ...

ULINE

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $159K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are you an expert at developing software solutions from start to finish? Then you belong at Uline! Join ...

ULINE

Senior Software Engineer

Kenosha, WI · On-site

$119K - $157K/yr

Senior Software Engineer Corporate Headquarters 12575 Uline Drive, Pleasant Prairie, WI 53158 Are you an expert at developing software solutions from start to finish? Then you belong at Uline! Join ...

GE HealthCare

Senior Software Engineer

Waukesha, WI · On-site

$122K - $161K/yr

As a Senior Software Engineer, you will own the design, development, and delivery of next-generation compute solutions for Magnetic Resonance Imaging (MRI) scanners, working with cross-functional ...

Alegeus

Senior Software Engineer

Milwaukee, WI · Hybrid

$120K - $159K/yr

Senior Software Engineer Join our team at Alegeus, where you'll experience unmatched opportunity and a culture that cares deeply about succeeding together. As a Senior Software Engineer, you'll drive ...

Leinenkugel's

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · On-site

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

GE HealthCare

Senior Software Engineer

Waukesha, WI · On-site

$122K - $161K/yr

Summary As a Senior Software Engineer, you will own the design, development, and delivery of next-generation compute solutions for Magnetic Resonance Imaging (MRI) scanners. Working across global ...

Molson Coors

Sr. Software Engineer - Salesfore

Milwaukee, WI · Hybrid

$120K - $159K/yr

In the role of Sr. Software Engineer - Salesforce working in Milwaukee, WI you will be part of the Information Technology team reporting to the Senior Manager, Software Engineering. This role is a ...

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All JobsMainframe Software Engineer JobsSenior Mainframe Software Engineer JobsSenior Mainframe Software Engineer Jobs in Milwaukee, WI

Senior Mainframe Software Engineer information

See Milwaukee, WI salary details

$74.4K

$141.2K

$189.2K

How much do senior mainframe software engineer jobs pay per year?

As of Aug 28, 2026, the average yearly pay for senior mainframe software engineer in Milwaukee, WI is $141,177.00, according to ZipRecruiter salary data. Most workers in this role earn between $120,700.00 and $159,100.00 per year, depending on experience, location, and employer.

What is a senior mainframe software engineer?

Senior Mainframe Software Engineers are experienced professionals who design, develop, maintain, and optimize software applications running on mainframe computer systems. They typically work with legacy programming languages such as COBOL, PL/I, or Assembler, and are responsible for ensuring the reliability, scalability, and security of critical business applications. Their role often includes troubleshooting complex issues, integrating new technologies with existing systems, and mentoring junior engineers. These specialists are essential for organizations that rely on mainframes for large-scale data processing and transaction management.

What are the key skills and qualifications needed to thrive as a senior mainframe software engineer?

To thrive as a Senior Mainframe Software Engineer, you need deep expertise in COBOL, JCL, DB2, and mainframe architecture, often backed by a degree in computer science or related fields and several years of relevant experience. Familiarity with tools like IBM z/OS, CICS, RACF, and version control systems is typically required, along with certifications like IBM Certified System Programmer as a plus. Strong analytical thinking, problem-solving ability, and effective communication are crucial soft skills for leading projects and collaborating with cross-functional teams. These skills ensure reliable, secure, and efficient operation of critical legacy systems that are foundational to many large organizations.

What are some common challenges faced by senior mainframe software engineers when integrating legacy systems with modern technologies?

Senior Mainframe Software Engineers often encounter challenges when bridging legacy mainframe systems with newer technologies, such as ensuring compatibility, maintaining data integrity, and managing security risks. These integrations typically require a deep understanding of both the existing mainframe environment and the modern platforms being adopted. Collaboration with cross-functional teams, including application developers, architects, and business analysts, is essential to design effective solutions and minimize disruptions. Staying current with industry best practices and emerging tools can help address these challenges and ensure a smooth transition.

What is the difference between Senior Mainframe Software Engineer vs Mainframe Developer?

AspectSenior Mainframe Software EngineerMainframe Developer
CredentialsBachelor's in Computer Science or related, often with certifications like IBM Certified SpecialistSimilar educational background, often with certifications in mainframe technologies
Work EnvironmentLarge enterprise IT departments, financial institutions, government agenciesSame as Senior Mainframe Software Engineer, often within similar industries
ResponsibilitiesDesign, develop, and oversee mainframe applications; lead projects; troubleshoot complex issuesDevelop and maintain mainframe applications; focus on coding and debugging

While both roles involve mainframe technologies and similar credentials, Senior Mainframe Software Engineers typically have more leadership responsibilities and oversee projects, whereas Mainframe Developers focus primarily on coding and application maintenance.

What are popular job titles related to Senior Mainframe Software Engineer jobs in Milwaukee, WI?

For Senior Mainframe Software Engineer jobs in Milwaukee, WI, the most frequently searched job titles are:

What job categories do people searching Senior Mainframe Software Engineer jobs in Milwaukee, WI look for?

The top searched job categories for Senior Mainframe Software Engineer jobs in Milwaukee, WI are:

Senior Mainframe Software Engineer jobs near you
Infographic showing various Senior Mainframe Software Engineer job openings in Milwaukee, WI as of August 2026, with employment types broken down into 57% Full Time, and 43% Contract. Highlights an 100% In-person job distribution, with an average salary of $141,177 per year, or $67.9 per hour.

Mainframe Sr Developer

Highbrow LLC

Milwaukee, WI • On-site

$90 - $120/hr

Other

Posted 10 days ago

Job description

Job Title: Mainframe Sr Developer

Job ID: 2024-13158

Job Location: Milwaukee, WI or Lincoln, NE (100% Onsite)

Job Travel Location(s):

# Positions: 3

Employment Type: W2

Duration:Long Term

# of Layers:0

Work Eligibility:All Work Authorizations are permitted – No OPTs, No H-1s

Key Technology:Mainframe, COBOL, GIT, TDD

Job Responsibilities:
  • Play a key role in developing industry leading software
  • Develop and test complex technical and architectural solutions that support Bank Solution product strategies and address the market needs of the client
  • Define & complete enhancements to financial software
Skills and Experience Required: Required:
  • Minimum 6+ years of relevant experience in application development.
  • Experience with iSeries, Unisys, and/or other mainframe technologies.
  • Experience with mainframe development languages such as Cobol.
  • Experienced with source management tools including GIT or similar tools.
  • Agile and/or DevOps experience.
  • Knowledgeable in industry standard software design patterns, development, data modelling, and SOLID principles.
  • Knowledgeable in test driven development (TDD) and automated functional testing including tools like UFT, Postman, and Selenium.
  • The ability to clearly communicate complex technical specifications, and the motivation to achieve best-in-class results.
Desired:
  • Financial industry interest and experience is beneficial.
Education
  • Associate’s degree in Computer Programming or related discipline is required, but a Bachelor’s degree in IT or a related discipline is preferred.
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