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Mainframes Developer Jobs in Milwaukee, WI (NOW HIRING)

Field Engineer? Service Technician? Or do you want to start a career in this field? Are you tech ... Familiarity with large servers, mainframe computers, and imaging software. * A+ Certification ...

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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 Aug 21, 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 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:

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.

Senior Mainframe Software Engineer (Hogan API, Java, Spring Boot, DevOps)

US Bank

Brookfield, WI

$118K - $155K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 27 days ago


U.S. Bank rating

8.2

Company rating: 8.2 out of 10

Based on 361 frontline employees who took The Breakroom Quiz

50th of 171 rated banks


Job description

At U.S. Bank, we're on a journey to do our best. Helping the customers and businesses we serve to make better and smarter financial decisions and enabling the communities we support to grow and succeed. We believe it takes all of us to bring our shared ambition to life, and each person is unique in their potential. A career with U.S. Bank gives you a wide, ever-growing range of opportunities to discover what makes you thrive at every stage of your career. Try new things, learn new skills and discover what you excel at-all from Day One.

Job Description

Job Description

This position will be responsible for the system development for the Hogan API application, using ISTIO Gateway, Kubernetes, Spring Boot, Java, Postgres, Z-connect, Datadog and Vulnerability resolution. Supporting NHID process. PCI and PAN compliance. Working directly with Hogan ODS and PAS creating the channel front-end API's.

The candidate is a self-motivated individual who can collaborate with a team and across the organization. The candidate takes responsibility of the software artifacts produced adhering to U.S. Bank standards in order to ensure minimal impact to the customer experience. The candidate will be adept with the agile software development lifecycle and DevOps principles.


Essential Responsibilities:

  • Consistently writes production-ready code that is easily testable, easily understood by other developers and accounts for edge cases and errors.

  • Consistently considers best practice when designing services/APIs in accordance to agreed best practices and standards. Regularly designs code that fits with the overall architecture.

  • Proficient at using systematic debugging to diagnose all issues located to a single service. Uses systematic debugging to diagnose cross service issues and is adept at using a range of tools to detect when there is an incident and raises this with stakeholders in a timely manner.

  • Takes ownership of incidents which fall in their domain and may be involved in the resolution of an incident or aid others on resolving incidents.

  • Understands and knows when to use different data structures. Understands when algorithms should be applied and the associated complexities. Helps others build their understanding of the applied algorithm and suggests improvements.

  • Consistently creates reasonable sized code reviews that contain descriptions of changes and testing conducted. Assesses other code reviews with the lens of quality and value - code quality, acceptance criteria, business logic, test coverage and aligned to overall architecture. Highlights any issues with a code review that might result in release complications. Proactive in evaluating code reviews in the team and resolving open code reviews in a timely manner.

  • Understands their team's testing approach and uses quality metrics to identify gaps. Works with their team to recommend solutions that are in accordance with accepted testing frameworks and the testing pyramid.

  • Approaches engineering work with a security lens and actively looks for vulnerabilities both in the code and when providing code reviews. Has a holistic view on how the applications across more than one context integrate with each other. Is aware of the organization's monitoring philosophy and skilled with the monitoring tools. Helps tune and change the monitoring on their team accordingly.

  • Develops techniques on effective coaching strategies for different individuals. Seeks out mentoring opportunities specifically to increase knowledge in parts of the system that is not well understood. Supports and advocates others and provides tools to help them grow their understanding a technical topic.

  • Actively participates and understands Scrum while developing a point of view on an effective software delivery process.

  • Reviews tasks critically and ensures they are appropriately prioritized and sized for continuous integration and incremental delivery. Anticipates and communicates blockers, delays before they require escalation.

  • Creates project proposals and designs that have considerable impact or touch multiple systems. Technical designs are clear, well thought out, and considers dependencies, failure states, maintainability, testability, and ease of support.

  • Keeps business context in mind when proposing architectural decisions. Also considers scalability, reliability and performance of systems/contexts affected when defining technical designs.

Basic Qualifications

  • Bachelor's degree, or equivalent work experience

  • Five to six years of relevant experience

Preferred Skills/Experience

  • Expert level hands-on experience inJava/J2EE, Spring Boot, Spring Cloud

  • Expert level hands-on experience inRESTful API design and development

  • Experience with Istio Gateway, PostgreSQL, and/or MS SQL

  • Experience in Jenkins/Cloud bees, Apigee, Kubernetes, Rancher.

  • Experience with REST/Graph QL APIs

  • Experience in streaming technologies like Apache Kafka, Spark is preferred.

  • Knowledge of OAuth, JWT, and API security best practices.

  • Thorough understanding of a feature, the users impacted, the flows impacted and feature's purpose

  • Adept with agile software development lifecycle and DevOps principles

  • Able to communicate processes and results with all parties involved in the product team, including engineers, product owner, scrum master, third party vendors and customers

  • Exposure to financial or enterprise-grade applications.

  • Analytical and debugging skills, Data Dog experience.

  • Ability to work independently and mentor junior developers.

  • Strong organizational and time management skills.

  • Strong problem-solving, communication, and collaboration abilities

Location expectations
This role requires working from a U.S. Bank location three (3) or more days per week.

*The role offers a hybrid/flexible schedule, which means there's an in-office expectation of 3 or more days per week and the flexibility to work outside the office location for the other days.

If there's anything we can do to accommodate a disability during any portion of the application or hiring process, please refer to ourdisability accommodations for applicants.

Benefits:

Our approach to benefits and total rewards considers our team members' whole selves and what may be needed to thrive in and outside work. That's why our benefits are designed to help you and your family boost your health, protect your financial security and give you peace of mind. Our benefits include the following:

  • Healthcare (medical, dental, vision)

  • Basic term and optional term life insurance

  • Short-term and long-term disability

  • Pregnancy disability and parental leave

  • 401(k) and employer-funded retirement plan

  • Paid vacation (from two to five weeks depending on salary grade and tenure)

  • Up to 11 paid holiday opportunities

  • Adoption assistance

  • Sick and Safe Leave accruals of one hour for every 30 worked, up to 80 hours per calendar year unless otherwise provided by law

Review our full benefits available by employment status here.

U.S. Bank is an equal opportunity employer. We consider all qualified applicants without regard to race, religion, color, sex, national origin, age, sexual orientation, gender identity, disability or veteran status, and other factors protected under applicable law.

E-Verify

U.S. Bank participates in the U.S. Department of Homeland Security E-Verify program in all facilities located in the United States and certain U.S. territories. The E-Verify program is an Internet-based employment eligibility verification system operated by the U.S. Citizenship and Immigration Services. Learn more about theE-Verify program.

The salary range reflects figures based on the primary location, which is listed first. The actual range for the role may differ based on the location of the role. In addition to salary, U.S. Bank offers a comprehensive benefits package, including incentive and recognition programs, equity stock purchase 401(k) contribution and pension (all benefits are subject to eligibility requirements). Pay Range: $119,765.00 - $140,900.00

U.S. Bank will consider qualified applicants with arrest or conviction records for employment. U.S. Bank conducts background checks consistent with applicable local laws, including the Los Angeles County Fair Chance Ordinance and the California Fair Chance Act as well as the San Francisco Fair Chance Ordinance. U.S. Bank is subject to, and conducts background checks consistent with the requirements of Section 19 of the Federal Deposit Insurance Act (FDIA). In addition, certain positions may also be subject to the requirements of FINRA, NMLS registration, Reg Z, Reg G, OFAC, the NFA, the FCPA, the Bank Secrecy Act, the SAFE Act, and/or federal guidelines applicable to an agreement, such as those related to ethics, safety, or operational procedures.

Applicants must be able to comply with U.S. Bank policies and procedures including the Code of Ethics and Business Conduct and related workplace conduct and safety policies.

Posting may be closed earlier due to high volume of applicants.


What U.S. Bank employees say

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About U.S. Bank

Sourced by ZipRecruiter

U.S. Bank is a reputable and established financial institution that plays a significant role in the banking sector. With a history spanning over 150 years, U.S. Bank has built a strong foundation of trust and reliability. As a comprehensive bank, they offer a wide array of financial products and services to cater to the diverse needs of their customers, including individuals, businesses, and communities. Customer satisfaction is of utmost importance to U.S. Bank. They prioritize delivering exceptional service and fostering long-term relationships with their clients. Through their extensive network of branches and advanced digital banking platforms, U.S. Bank ensures convenient access to their services, empowering customers to manage their finances efficiently and securely.

Industry

Banking and credit intermediation

Company size

10,000+ Employees

Headquarters location

Minneapolis, MN, US

Year founded

1863

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