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This position has closed. Fiserv removed this listing from their careers page on Oct 6, 2026. The interview prep below is still useful, and there are similar open roles at the bottom of this page.

Software Development Engineering Advisor

Fiserv · Milwaukee, WI · Full time

Posted Sep 22, 2026 · We last checked this listing on Oct 4, 2026

Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a feature you designed and shipped on a SaaS platform. What was your part, and how did it perform in production?

What they are checking: Whether they own work end to end, including how it behaves for real users after release.

Tell me about a time you improved code quality on a team.

What they are checking: Whether they raise standards through reviews, tests and refactoring, which the role names.

Tell me about a technical disagreement with another engineer. How did you resolve it?

What they are checking: Whether they can settle disagreements with data and respect rather than rank.

What would you do

A business analyst brings you a requirement that's vague. How do you turn it into something you can build?

What they are checking: Whether they can work with analysts to clarify rules and edge cases before coding.

An implementation partner reports a defect affecting a bank client. How do you handle it?

What they are checking: Whether they act urgently and communicate clearly when a financial institution is affected.

About the work

What makes building a core banking platform like Finxact different from building a typical web app?

What they are checking: Whether they understand accuracy, auditability and consistency needs when money and ledgers are involved.

How would you design an API that posts transactions so that a retry never double-posts?

What they are checking: Whether they understand idempotency and consistency, which are essential in financial systems.

How do you approach testing for a feature that calculates interest or fees?

What they are checking: Whether they test edge cases, rounding and dates carefully, since small errors affect many accounts.

How do you design services to scale in the cloud while staying secure?

What they are checking: Whether they think about horizontal scaling, data protection and access control together.

What do you look for when reviewing a teammate's pull request?

What they are checking: Whether their reviews catch real problems and help others grow, as an advisor-level engineer should.

How do you keep a large, shared codebase maintainable over years?

What they are checking: Whether they value clear design and documentation on a long-lived platform.

Practice this interview out loud.

Offer builds a real interview for this exact role at Fiserv from your resume and this job description, asks the questions one at a time, and tells you what landed. The first one is free.

Practice this out loud

The full job description

As published by Fiserv.

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 Software Development Engineering Advisor TITLE: Software Development Engineering Advisor EMPLOYER: Fiserv Solutions, LLC LOCATION: Milwaukee, WI (and various unanticipated locations throughout the U.S. subject to authorization from management) DUTIES: Analyze Product Requirements and create technical specifications. Develop new API’s and Services to support the broader Product Strategy. Develop customized solutions within the platform to support critical business functions and meet project objectives, client requirements, and company goals. Act as the primary expert on AWS cloud native development best practices. Provide guidance and mentorship on AWS services and solutions. Design, implement, and manage scalable cloud infrastructure. Use Infrastructure as Code (IaC) tools to automate infrastructure provisioning; develop and maintain CI/CD pipelines to automate the build, test, and deployment processes; and ensure smooth and reliable code releases. Develop and manage containerized applications and orchestrate containers. Implement Automation to improve coding efficiency. Ensure delivered solutions are optimized for ease-of-use, reusability, and scalability. REQUIREMENTS: Bachelor's degree in Computer Science, Engineering or a related field and 4 years in any job title involving Cloud DevOps engineering experience. Prior experience must include 4 years in the following: Working in Infra setup, deployment and automation in public cloud; Building Infrastructure as a Code using CloudFormation or Terraform; Automating stacks to build out and destroy environments on demand; Provisioning infrastructure for Databases, Micro Services, Kafka streaming and Cache; Working in the financial industry; Working in AWS Cloud or Azure Cloud platforms; and Using Quality and Security scan tools including Sonar, Fortify, and Web Inspect. Prior experience must also include 2 years in the following: Working in Agile methodology; Building Infrastructure as a Code using CDK with Python; and Automating Integration testing and integration with CI/CD pipeline. TRAVEL: None TO APPLY: Select “Apply” on this page and follow the prompts to attach resume and submit. JOB CODE: VD621 #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.