Full Stack Development Jobs in O Fallon, MO (NOW HIRING)

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

What does a successful Full-Stack .NET Software Developer do at Fiserv?
A successful Full-Stack .NET Software Developer at Fiserv designs, builds, and maintains high-quality software applications that support business goals and client needs. They collaborate across teams to translate requirements into technical solutions that perform reliably in production. They strengthen delivery by improving code quality and mentoring teammates.

What you will do?

• Lead the design, development, and implementation of software applications aligned to business goals.
• Partner with cross-functional teams to gather requirements and convert them into technical specifications.
• Perform coding, testing, and debugging to ensure performance and reliability.
• Maintain and enhance existing codebases while leading peer review processes.
• Mentor junior developers and provide technical guidance to improve team execution.

What you must have?

• 4+ years of software development experience (or 4+ years of an equivalent combination of education, related experience, and/or military experience).
• 2+ years of experience with C#, .NET, or similar programming languages.
• 2+ years of experience working with SQL databases.
• 2+ years of experience with a major cloud platform (AWS, Azure, or GCP) plus CI/CD pipelines, DevOps practices, and Agile methodologies.

What would be nice to have?

• 1+ years of experience delivering software in the financial services industry.
• 2+ years of experience supporting production systems, including operational work and on-call/incident response responsibilities.
• 1+ years of experience driving security or resilience initiatives such as vulnerability remediation or disaster recovery readiness.

This role is not eligible to be performed in Colorado, California, District of Columbia, Hawaii, Illinois, Massachusetts, Maryland, Minnesota, New Jersey, New York, Nevada, Rhode Island, Vermont or Washington.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

Please note that salary ranges provided for this role on external job boards are salary estimates made by outside parties and may not be accurate.

Thank you for considering employment with Fiserv. Please:

• Apply using your legal name
• Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

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 contactAskHR.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.