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Senior Software Engineer

BentoBox

BentoBox

Software Engineering
Milwaukee, WI, USA
Posted on Mar 19, 2026

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

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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.

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