Senior Front-End Engineer, Clover

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 Front-End Engineer, Clover

About your role:
Join the Clover Point of Sale team at Fiserv, building the front-end technology that powers millions of payments every day. The team delivers merchant-facing web and embedded UI experiences; this role architects and implements high-performance, scalable front-end applications that improve merchant operations. You will help shape product outcomes and drive engineering standards across a global platform.

What you’ll do:

• Architect, design, and develop front-end applications and reusable component libraries using JavaScript, TypeScript, and React.
• Lead end-to-end implementation of features, collaborating with product managers, designers, and back-end engineers to meet business objectives.
• Build server-side rendered and statically generated experiences using Next.js, and define front-end architecture and patterns.
• Advocate and implement best practices for testing, CI/CD, performance, and security across front-end deliverables.
• Troubleshoot complex application issues, drive root-cause analysis, and own production fixes and improvements.
• Mentor and coach engineers on technical design, code quality, and delivery practices; contribute to the technical roadmap and release planning.
• Responsibilities listed are not intended to be all-inclusive and may be modified as necessary.

Experience you’ll need to have:

• 6+ years of experience in JavaScript and TypeScript development with React (hooks, component architecture, state management).
• 5+ years of experience in Next.js, front-end architecture, modular component libraries, and Google Cloud Platform services (App Engine, Cloud Run, GKE), including containerization with Docker.
• 5+ years of experience in web application security and mitigation techniques (CSP, OAuth/OIDC, XSS, CSRF).
• 5+ years of experience integrating with and designing REST and GraphQL APIs.
• 4+ years of experience with automated testing frameworks and E2E testing (Cypress, Jest, Selenium).
• 4+ years of experience with build and bundling tools (Webpack, Babel), module federation, and Git-based CI/CD pipelines.
• 4+ years of equivalent combination of educational background, related experience, and/or military experience.

Experience that would be great to have:

• Experience building and maintaining design systems with Storybook or equivalent.
• Familiarity with accessibility standards and testing (WCAG 2.1, axe).
• Experience with web performance optimization and observability tools (Lighthouse, RUM, Sentry, Datadog).
• Knowledge of payment industry standards and PCI DSS considerations for front-end integrations.
• Demonstrated experience mentoring engineers, conducting technical design reviews, and influencing cross-functional stakeholders.

How you’ll work:

• This role is on-site Monday through Friday. Fiserv considers in-person collaboration to be an essential part of this role, as in-person office experiences help you with your overall onboarding experience and leads to stronger productivity.
• This role requires the use of a computer and audio equipment.

Sponsorship:

• You must currently possess valid and unrestricted U.S. work authorization to be considered for this role. Individuals with temporary visas, including but not limited to F-1 (OPT, CPT, STEM), H-1B, H-2, or TN, or any candidate requiring sponsorship, now or in the future, will not be considered for this role.

Benefits at Fiserv:

• Fuel Your Life program to support physical, financial, social, and emotional well-being
• Paid holidays and generous time away policies
• No-cost mental health support through Employee Assistance Programs
• Living P