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Senior Mainframe Software Engineer Jobs in Milwaukee, WI

GE HealthCare

Sr. Software Engineer

Waukesha, WI · On-site

$122K - $161K/yr

Summary As a Senior Software Engineer, you'll play a meaningful role in shaping the next generation of MR scanner technology. This position offers the opportunity to make a real impact on healthcare ...

GE HealthCare

Senior Software Engineer - Digital

Waukesha, WI · On-site

$122K - $161K/yr

GE HealthCare is seeking a Senior Software Engineer for ECG Management with deep experience integrating Electronic Health Record (EHR) systems. This role involves collaborating with architects ...

TIER4 GROUP

Software Integration Engineer

Franklin, WI · Hybrid

$96K - $130K/yr

Title: Software Integration Engineer Location: Franklin, WI Type: Hybrid (3 days onsite per week ... Proficiency in IBM MQ (Linux, MQ Appliance, Mainframe MQ preferred). * Strong skills in Python ...

Gehc

Senior Software Engineer - Digital

Waukesha, WI

$122K - $161K/yr

Summary We are seeking a Senior Software Engineer for ECG Management with deep experience integrating Electronic Health Record (EHR) systems. In this role, you will collaborate closely with ...

Generac

Senior Software Development Engineer

Sussex, WI

$119K - $157K/yr

The Senior Software Development Engineer is a senior member of a team developing and testing power generation control systems that can be remotely controlled and monitored using web and mobile ...

Direct Supply

Staff Software Engineer

Milwaukee, WI · On-site

In the Staff Software Engineer position, you'll play a critical role in shaping AI-first ... The Direct Supply family of companies cares for every critical area of Senior Living, providing ...

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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 10, 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 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 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 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.

Are senior mainframe software engineers in demand?

Senior mainframe software engineers are in steady demand due to the continued reliance of many large organizations on mainframe systems for critical operations. Skills in COBOL, JCL, and mainframe modernization tools increase employability, especially in finance, government, and healthcare sectors where legacy systems remain essential.

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.

Senior Software Engineer

Kforce Technology Staffing

West Bend, WI • On-site

$123K - $163K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 5 days ago

Job description

RESPONSIBILITIES:
Kforce has a client in West Bend, WI that is seeking a Senior Software Engineer who will be supporting greenfield development.
Duties:
* Build APIs and event-driven services
* Execute against existing architecture
* Translate legacy XML-based systems, modern APIs
* Deliver quickly with minimal ramp
REQUIREMENTS:
* Strong backend/API engineering experience
* REST + event-driven architecture experience
* Proven Agile delivery experience
Ability to:
* Take specs build test deliver independently
* Write unit tests
* Comfortable in greenfield, fast-paced environments
* Ability to operate in ambiguoevolving team structures
Nice-to-Have:
* Azure DevOps/pipeline setup experience
* Experience modernizing legacy systems
* Data transformation/mapping experience
* Light React exposure
Comfortable with:
* Moving fast
* Working with incomplete information
* Delivering independently
The pay range is the lowest to highest compensation we reasonably in good faith believe we would pay at posting for this role. We may ultimately pay more or less than this range. Employee pay is based on factors like relevant education, qualifications, certifications, experience, skills, seniority, location, performance, union contract and business needs. This range may be modified in the future.
We offer comprehensive benefits including medical/dental/vision insurance, HSA, FSA, 401(k), and life, disability & ADD insurance to eligible employees. Salaried personnel receive paid time off. Hourly employees are not eligible for paid time off unless required by law. Hourly employees on a Service Contract Act project are eligible for paid sick leave.
Note: Pay is not considered compensation until it is earned, vested and determinable. The amount and availability of any compensation remains in Kforce's sole discretion unless and until paid and may be modified in its discretion consistent with the law.
This job is not eligible for bonuses, incentives or commissions.
Kforce is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.
By clicking ?Apply Today? you agree to receive calls, AI-generated calls, text messages or emails from Kforce and its affiliates, and service providers. Note that if you choose to communicate with Kforce via text messaging the frequency may vary, and message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You will always have the right to cease communicating via text by using key words such as STOP.

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