Sr. Web Application Developer

Calling all innovators find your future at Fiserv.

Were 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 were involved. If you want to make an impact on a global scale come make a difference at Fiserv.

Job Title

What does a successful Senior Web Application Developer do at Fiserv

Join our Digital Journeys team as a React Web Application Developer where youll play a pivotal role in creating personalized scalable web experiences used across our Retail Services and Restaurant verticals. This critical position drives the development of reusable components and dynamic web personalization enabling seamless customer journeys and future-ready digital solutions. If youre passionate about building high-performance user interfaces and collaborating closely with design and engineering teams this is your opportunity to make a real impact.

What you will do:

• Develop and maintain reusable modular and scalable UI components using React and supporting web personalization and enabling website creation across multiple business verticals including Retail Services and Restaurants. Your work will directly impact the scalability performance and future-readiness of our digital customer experiences.
• Collaborate with product managers designers and backend engineers to deliver end-to-end solutions that are aligned with business objectives.
• Implement server-side rendering (SSR) static site generation (SSG) and dynamic routing using for optimized performance and SEO.
• Ensure high-quality output through code reviews unit testing and adherence to secure coding practices.
• Monitor and optimize application performance using tools such as Web Vitals Lighthouse or equivalent observability platforms.
• Contribute to our shared component libraries and internal development standards.
• Participate in Agile development processes including sprint planning retrospectives and daily stand-ups.

What you will need to have:

• Bachelors Degree (preferably Computer Science or Engineering) or equivalent combination of experience education and military.
• 25 years of experience in frontend software development.
• Experience with JavaScript (ES6) and .
• Experience with TypeScript HTML5 and CSS3 (including modern styling libraries such as Tailwind CSS or CSS Modules).
• Strong understanding of RESTful API integration and asynchronous data management.
• Working knowledge of source control systems such as Git and experience with CI/CD workflows.
• Familiarity with accessibility (WCAG) responsive design principles and cross-browser compatibility.

What would be great to have:

• Experience with modern state management libraries (e.g. React Query Zustand Redux Toolkit).
• Exposure to observability and error-tracking tools (e.g. Datadog Sentry).
• Knowledge of unit and integration testing frameworks (e.g. Jest React Testing Library Cypress).
• Prior experience in a high-scale production environment serving enterprise customers.
• Understanding of SEO optimization performance tuning and Core Web Vitals.

Important info about this role:

• Were better together. This role is fully on-site.
• In order to be considered you must be legally authorized to work in the U.S. without need for sponsorship now or in the future.

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

It is unlawful to discriminate against a prospective employee due to the individuals 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 contact. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiservs Disability Accommodation Policy for additional information.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

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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.