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Senior Mainframe Software Engineer Jobs in Milwaukee, WI

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 ...

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 ...

Mainframe Developer

Brookfield, WI · On-site

$60K - $135K/yr

Mainframe Developer City: Brookfield State/Province: Wisconsin Posting Start Date: 7/6/26 Wipro Limited (NYSE: WIT, BSE: 507685, NSE: WIPRO) is a leading technology services and consulting company ...

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 ...

Software Engineer I - Mainframe (Cobol)

Brookfield, WI · On-site

$46.50 - $59.75/hr

Bank is seeking a Software Engineer who will contribute toward the success of our technology initiatives in our digital transformation journey. This position will be responsible for the analysis ...

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 ...

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 ...

Senior Software Engineer

Milwaukee, WI

$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 ...

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 ...

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 ...

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 ...

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 ...

Senior Software Engineer

Waukesha, WI

$122K - $161K/yr

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

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 ...

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 ...

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 ...

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $159K/yr

Job Title Senior Software Engineer TITLE: Senior Software Engineer EMPLOYER: Fiserv Solutions, LLC LOCATION: Milwaukee, WI (and various unanticipated locations throughout the US subject to ...

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $158K/yr

In the Senior Software Engineer position, you'll lead the development of intelligent, adaptive, and scalable applications by leveraging AI-powered development tools and machine learning models. You ...

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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 6, 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:
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 Mainframe Software Engineer (Hogan API)

US Bank

Brookfield, WI • On-site

$116K - $152K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 12 days ago


U.S. Bank rating

8.2

Company rating: 8.2 out of 10

Based on 360 frontline employees who took The Breakroom Quiz

52nd of 170 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

U.S. Bank is seeking an Application Developer with design and development experience to contribute toward the success of our technology initiatives. The position will include system development for the Hogan API application, using ISTIO Gateway, Kubernetes, Postgres, Z-connect, Datadog and Vulnerability resolution. Supporting NHID process. PCI and PAN compliance. Updating Working directly with Hogan ODS and PAS creating the channel front-end API access. - JSON and Cobol

The successful candidate will join a team of innovative developers responsible for maintaining and enhancing U.S. Bank's Customer Information System (CIS) as well as the Hogan Online Delivery System (ODS) & Hogan Platform Automation Support (PAS) System. The candidate will work closely with our business partners to develop requirements, designs, and write technical specifications, designing or redesign complex mainframe processes within the Hogan CIS, ODS & PAS platforms and at times collaborate with other application development teams while simultaneously maintaining quality, security, and compliance. Successful candidates will exemplify U.S. Bank's ethical principles of uncompromising integrity, respect for others, accountability for decisions and actions, and good citizenship.

Works alongside product engineering team. Responsible for designing, testing, developing, operating, and maintaining products, sometimes under the guidance of principal engineers. Strives to deliver work with the customer in mind and understands the value of what they're building. Understands the organization's strategy and how the engineering culture aligns to this. Recognizes how the product works and the overall purpose and impact of the product.

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:

  • Hands on Mainframe development experience with Hogan COBOL, JCL, CICS, Json and Splunk, IMS Database, Gitlab, IDz/RDz (IBM Developer for zOS), Jira

  • Strong experience with Application maintenance, design, architecture& System testing

  • Experience in System development life cycle, IT standards, procedures, policies.

  • Demonstrated experience in effective cross team interaction and collaboration, with both technical and business partner teams.

  • Good verbal, written, and interpersonal communication skills.

  • Strong analytical skills with high attention to detail and accuracy.

  • Demonstrated experience in problem solving.

** This position is not eligible for visa sponsorship. **

*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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