> Markdown version of [/jobs/ext/2723359-sr-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/2723359-sr-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Full Stack Developer - **Company:** Fiserv, Inc. - **Location:** Sunnyvale, CA, United States - **Experience:** Expert - **Salary:** $140,000.0 - $210,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Adobe InDesign, Artificial Intelligence, Automation of Tests, Cascading Style Sheets (CSS), Code Review, Cross-Origin Resource Sharing (Ajax Programming), Relational Databases, Cursor (Graphical User Interface Elements), Design of User Interfaces, Web Servers, Python (Programming Language), PostgreSQL, MySQL, Node.Js, OAuth, Release Management, Clover, Responsive Web Design, Web Application Security, Software Engineering, TypeScript, User Interface Testing, Web Applications, Web Engineering, Web Performance Optimization, GitHub Copilot, ReactJS, Spring-boot, Backend, Webpack, Material UI, Kubernetes, Information Technology, Graphql, Front End Software Development, Restful APIs, Docker, Microservices - **Published:** September 4, 2026 - **Apply:** https://www.dice.com/job-detail/64d9faeb-277d-4178-8571-0004a4316374 ## About the Role * Bachelor's degree in Computer Science, Engineering, or equivalent practical experience. * 7+ years of software development experience, with a proven focus on Frontend / Web Engineering. * Expertise in React and TypeScript, including deep knowledge of modern client-side state management, build tooling (Webpack/Vite), and Web Performance Optimization. * Strong Full Stack capabilities: Working knowledge of Java and Spring Boot to build, update, or integrate with existing backend microservices. * Hands-on experience with modern CSS frameworks, component design systems, and responsive web design for complex dashboard interfaces. * Experience using and championing AI-assisted development tools (e.g., GitHub Copilot, Cursor, automated test suites) to accelerate UI delivery. * Practical knowledge of RESTful API design, HTTP/browser protocols, web security (OAuth2, CORS), and working with relational databases (MySQL, PostgreSQL). What would be great to have: * Experience with Micro-frontend architectures (e.g., Webpack Module Federation). * Familiarity with secondary languages/tools: Python, Node.js, GraphQL, or Docker/Kubernetes containerized workflows. * Previous background in Fintech, e-commerce, POS platforms, or merchant analytics tools. * Experience re-architecting client-side monoliths into decoupled, high-availability web applications. ## Description In this role, you will be a lead UI/UX-minded engineer responsible for driving the client-side evolution and expansion of our platform. While you have the full-stack capability to navigate backend APIs, your primary strength and passion lie in building exceptional web experiences, modern user interfaces, and modular frontend architectures. As part of the Loyalty Program team, you will own the user experience on the Clover Dashboard , translating complex data into sleek, responsive web applications used by over 700k merchants worldwide. Working alongside a strong team of dedicated backend engineers, you will bridge the gap between design, product, and services-owning web client features end-to-end, evaluating modern frontend technologies, and ensuring sub-second UI responsiveness at scale., * Architect, design, and develop high-performance, modular web-based frontend applications using React, TypeScript, and modern JavaScript, backed by supporting Java/Spring Boot microservices. * Own the client-side architecture of the Clover Dashboard, establishing frontend best practices, state management standards, and component libraries. * Partner with Product, UX, and core Backend Engineers to translate product requirements into intuitive, reliable web workflows and clean, extensible software. * Design, consume, and optimize RESTful APIs and GraphQL/event-driven endpoints built for web clients, mobile dashboards, and 3rd-party app integrations. * Promote effective use of AI-powered engineering tools (e.g., AI coding assistants, automated test generation, code review, and UI performance profiling) to accelerate delivery and quality. * Own client services and features from design through deployment, automated UI testing, and production monitoring. * Participate in design and code reviews, advocating for modular code, responsive design, accessibility, and clean frontend architecture. * Coach and mentor team members to improve their technical frontend capabilities, web performance optimization, and UI testing strategies. * Participate in regular release management and cross-functional agile rituals across distributed teams. ## Related Videos - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [Coding for Good: Achieving social change with an app](https://www.wearedevelopers.com/videos/1645-coding-for-good-achieving-social-change-with-an-app) ## Related Articles - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)