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Mainframes Developer Jobs in Milwaukee, WI (NOW HIRING)

Sonsoft Inc

Mainframe Automation Testing

Milwaukee, WI · On-site

Jenkins * 2 yrs of SDET knowledge in PL1 (Mainframe) * 2 yrs of Insurance knowledge * Framework Design and Enhancement * Experience with Insurance domain * Ability to work in team environment and ...

Sonsoft Inc

Mainframe Automation Testing

Milwaukee, WI · On-site

Jenkins * 2 yrs of SDET knowledge in PL1 (Mainframe) * 2 yrs of Insurance knowledge * Framework Design and Enhancement * Experience with Insurance domain * Ability to work in team environment and ...

TIER4 GROUP

Software Integration Engineer

Franklin, WI · Hybrid

$96K - $130K/yr

Proficiency in IBM MQ (Linux, MQ Appliance, Mainframe MQ preferred). * Strong skills in Python, Java, Shell Scripting, and Git. * Experience in reverse engineering and system analysis. * Familiarity ...

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Showing results 21-40

All JobsMainframes Developer JobsMainframes Developer Jobs in Milwaukee, WI

Mainframes Developer information

See Milwaukee, WI salary details

$47.3K

$110.2K

$163.6K

How much do mainframes developer jobs pay per year?

As of Sep 13, 2026, the average yearly pay for mainframes developer in Milwaukee, WI is $110,195.00, according to ZipRecruiter salary data. Most workers in this role earn between $88,700.00 and $128,100.00 per year, depending on experience, location, and employer.

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

Is a mainframes developer a good career?

A mainframes 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 systems and mainframe programming languages like COBOL. However, it requires specific skills and certifications, and the field may have limited growth compared to emerging technologies.

Is a mainframes developer still in demand?

Mainframes developers are still in demand in industries such as finance, government, and healthcare that rely on legacy systems. They typically work with COBOL, JCL, and mainframe environments, and demand persists due to the ongoing need to maintain and upgrade existing mainframe applications. However, the number of new positions is limited compared to emerging technologies, and skills in mainframe modernization are increasingly valued.

What does a mainframes developer do?

A mainframes developer designs, codes, tests, and maintains applications running on mainframe computers, often using languages like COBOL, PL/I, or Assembler. They ensure the stability, security, and efficiency of large-scale enterprise systems, frequently working with legacy code and mainframe-specific tools in a structured environment.

What are popular job titles related to Mainframes Developer jobs in Milwaukee, WI?

For Mainframes Developer jobs in Milwaukee, WI, the most frequently searched job titles are:

What job categories do people searching Mainframes Developer jobs in Milwaukee, WI look for?

The top searched job categories for Mainframes Developer jobs in Milwaukee, WI are:

Mainframes Developer jobs near you
Infographic showing various Mainframes 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 $110,195 per year, or $53 per hour.

Actuarial Senior Software Engineer, Mainframe

Milwaukee, WI • On-site

Northwestern Mutual Life Insurance Company
Finance and Insurance • 5 - 10K employees
Learn more about Northwestern Mutual Life Insurance Companyexternal

$136K - $205K/yr

Full-time

Posted 11 days ago

Northwestern Mutual rating

8.1

Company rating: 8.1 out of 10

Based on 77 frontline employees who took The Breakroom Quiz

Job description

About the Role
The Actuarial Software Engineering team at Northwestern Mutual is responsible for creating and improving systems that ensure the company can meet its financial obligations to its customers, employees, and field representatives. These systems are financial in nature, centered on risk products and benefit plans, and based on the professional knowledge of the actuary. The applications are varied, generally are mathematical in nature, and involve working in close partnerships with technical peers and actuarial business experts.
As an Actuarial Senior Software Engineer, you will contribute to our mainframe team, with a focus on the reinsurance systems. Working with calculations related to customer premiums, claim payments and reserve calculations requires a comfort level with math, eye for details, and a strong sense of prioritization. Your NM product knowledge and ability to translate technical and business terms will provide you with a strong foundation for your direct client interactions.
This is an excellent place to start within this group, will help you build a foundation of knowledge about our risk products, and from there you can either stay mainframe focused or grow into other business application areas and other technologies. Regardless, you'll be part of a team that plays a crucial role in ensuring this great company continues to do great things for its customers.
What You'll Do in the Role
  • Work with subject matter experts and technical peers to translate business needs into software engineering projects.
  • Leverage technical experience to develop, create, and implement software changes that meet business needs.
  • Provide guidance and leadership to less experienced software engineers.
  • Strive to continually improve our core systems, with a focus on delivering excellence to the business experts who rely on your work.
  • Multiply the talent of your teammates by sharing your experiences and learnings and fostering a positive team focused atmosphere.
  • Establishes, aggregates, and shares team standards and best practices within department.
  • Utilizes working relationships across teams within their division.

What You'll Bring to the Role
  • Bachelor's Degree in a technical field or equivalent experience.
  • 4-5 years professional experience required.
  • Experience developing and supporting mainframe-based applications preferred.
  • Experience with JCL, PL/I, SAS or similar 4th generation tool ideal
  • Experience with SQL desired.
  • Experience with professional change management concepts and tools (e.g. ChangeMan, ServiceNow, Control-M)
  • Strong problem-solving skills.
  • Capable of communicating between product, engineering, and the business.
  • Manages own time to meet objectives.
  • Ability to perform peer reviews on code and design.
  • Solid understanding of design patterns and architecture.

Skills You Have
  • Accountability
  • Analytical Thinking
  • Business Application
  • Learning Agility & Critical Thinking
  • Software Development
  • Software Problem Solving
  • Technical Problem Solving

#LI-Hybrid
Compensation Range:
Pay Range - Start:
$118,960.00
Pay Range - End:
$178,440.00
Geographic Specific Pay Structure:
Structure 110:
$130,880.00 USD - $196,320.00 USD
Structure 115:
$136,800.00 USD - $205,200.00 USD
We believe in fairness and transparency. It's why we share the salary range for most of our roles. However, final salaries are based on a number of factors, including the skills and experience of the candidate; the current market; location of the candidate; and other factors uncovered in the hiring process. The standard pay structure is listed but if you're living in California, New York City or other eligible location, geographic specific pay structures, compensation and benefits could be applicable, click here to learn more.
Grow your career with a best-in-class company that puts our clients' interests at the center of all we do. Get started now!
Northwestern Mutual is an equal opportunity employer that welcomes talented individuals of all backgrounds. We are committed to creating and maintaining an environment in which each employee can contribute creative ideas, seek challenges, assume leadership and continue to focus on meeting and exceeding business and personal objectives.

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About Northwestern Mutual

Sourced by ZipRecruiter

Northwestern Mutual has been helping families and businesses achieve financial security for over 160 years through a distinctive planning approach that integrates risk management with wealth accumulation, preservation, and distribution. With more than $290 billion in assets, $30 billion in revenues and more than $1.9 trillion worth of life insurance protection in force, Northwestern Mutual delivers financial security to more than 4.6 million clients. People are the power behind Northwestern Mutual, and diversity makes us better. We are committed to reflecting and serving the marketplace. We do so by attracting and improving the engagement of those who bring their outstanding perspectives, ideas, and beliefs.

Industry

Finance and insurance

Company size

5,001 - 10,000 Employees

Headquarters location

Milwaukee, WI, US

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