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Senior Mainframe Software Engineer Jobs in Wisconsin

Fiserv, Inc.

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 ...

Acculynx

Senior Software Engineer

Beloit, WI · On-site

$116K - $153K/yr

Senior Software Engineer AccuLynx is a fast-growing SaaS provider of business management software for roofing contractors. With more than 10 years in the business and impressive year-over-year ...

Direct Supply

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 ...

Exactsciences

Sr. Software Engineer

Madison, WI

$123K - $162K/yr

Position Overview As a Sr. Software Engineer, this seasoned professional will demonstrate competence and creativity in a wide range of technical areas. This role will have a lead role in the design ...

Exact Sciences

Sr. Software Engineer

Madison, WI

$123K - $162K/yr

Position Overview As a Sr. Software Engineer, this seasoned professional will demonstrate competence and creativity in a wide range of technical areas. This role will have a lead role in the design ...

Exact Sciences

Sr. Software Engineer

Madison, WI · On-site

$123K - $162K/yr

Position Overview As a Sr. Software Engineer, this seasoned professional will demonstrate competence and creativity in a wide range of technical areas. This role will have a lead role in the design ...

Directsupply

Senior Staff Software Engineer

Milwaukee, WI

$120K - $159K/yr

In the Senior Staff Software Engineer position, you'll lead the design and delivery of highly complex, AI-driven systems across multiple teams and platforms. You will define architectural patterns ...

Keylent Inc

Sr Software Engineer

Mosinee, WI

$121K - $159K/yr

Sr Software Engineer Contract Location: Mosinee, WI Skill: Windows Administration Experience: 10 years Description: To design, develop and implement software applications and systems based on user ...

Direct Supply

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $159K/yr

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

Direct Supply, Inc.

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $159K/yr

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

Directsupply

Senior Software Engineer

Milwaukee, WI · On-site

$120K - $159K/yr

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

SECURA

Senior Software Engineer

Neenah, WI

$126K - $166K/yr

The Senior Software Engineer at SECURA designs, develops, and supports scalable, secure software solutions that power agent and associate-facing technologies, working across the full software ...

Infleqtion

Sr Software Engineer

Madison, WI

$106K - $145K/yr

We are seeking a Senior Software Engineer to join the team building the control system software for Infleqtion's quantum computers. The ideal candidate is an experienced backend engineer with a ...

Infleqtion

Sr Software Engineer

Madison, WI · On-site

$106K - $145K/yr

We are seeking a Senior Software Engineer to join the team building the control system software for Infleqtion's quantum computers. The ideal candidate is an experienced backend engineer with a ...

ColdQuanta

Sr Software Engineer

Madison, WI

$106K - $145K/yr

We are seeking a Senior Software Engineer to join the team building the control system software for Infleqtion's quantum computers. The ideal candidate is an experienced backend engineer with a ...

Infleqtion

Sr Software Engineer

Madison, WI · On-site

$106K - $145K/yr

We are seeking a Senior Software Engineer to join the team building the control system software for Infleqtion's quantum computers. The ideal candidate is an experienced backend engineer with a ...

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Senior Mainframe Software Engineer information

What are the key skills and qualifications needed to thrive as a Senior Mainframe Software Engineer, and why are they important?

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 Senior Mainframe Software Engineers?

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.

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 Wisconsin? For Senior Mainframe Software Engineer jobs in Wisconsin, the most frequently searched job titles are:
What job categories do people searching Senior Mainframe Software Engineer jobs in Wisconsin look for? The top searched job categories for Senior Mainframe Software Engineer jobs in Wisconsin are:
What cities in Wisconsin are hiring for Senior Mainframe Software Engineer jobs? Cities in Wisconsin with the most Senior Mainframe Software Engineer job openings:
Senior Mainframe Software Engineer jobs near you
Senior Software Engineer

Senior Software Engineer

Fiserv, Inc.

Milwaukee, WI • On-site

$120K - $159K/yr

Full-time

Posted 29 days ago

Fiserv rating

7.6

Company rating: 7.6 out of 10

Based on 85 frontline employees who took The Breakroom Quiz

106th of 138 rated financial services

Job description

Calling all innovators - find your future at Fiserv.
We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.
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 authorization from management)
DUTIES: Deliver enterprise grade financial transactions processing solutions tailored to the Payments industry. Collaborate with stakeholders to gather business requirements and translate them into technical specifications and detailed design documents. Design, code, and integrate new functionalities into existing systems as well as build new systems using cutting edge technologies while adhering to industry standards and security protocols. Ensure the quality of software deliverables through rigorous code reviews, implementing best practices in coding, and addressing production challenges promptly. Work closely with QA teams throughout the testing phase and resolve any identified issues in a timely manner. Actively participate in project meetings and sprint planning sessions, ensuring stakeholders are updated on project progress, timelines, and any dependencies. Ensure compliance with necessary network certifications to meet industry regulations and standards. Manage application deployments, ensuring that new releases are executed smoothly without disrupting existing services. Collaborate with global teams to develop effective solutions that align with business objectives.
REQUIREMENTS: Bachelor's degree in Computer Science, Engineering, or a related field and 4 years in any job title involving software development experience in Credit and Debit payment processing. Prior experience must include 4 years in the following: Working with object-oriented languages, distributed systems, AWS and GCP services; Building high availability and highly scalable payment processing applications; Working in .NET, C#, REST APIs, and Microsoft SQL; Working with Agile methodologies; Working in TCP/IP and Socket Programming; and Working in Asynchronous Multithreaded architecture.
TRAVEL: None
TO APPLY: Apply by selecting "Apply" on this page and following prompts to attach resume and submit.
JOB CODE: KG553
#P3M
It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.
Our commitment to Equal Opportunity:
Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.
If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact AskHR.US@fiserv.com. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv's Disability Accommodation Policy for additional information.
Note to agencies:
Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.
Warning about fake job posts:
Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

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