Senior Full Stack UI Engineer (5+ Years in React.js, TypeScript/JavaScript and RESTful APIs)

Job Title

Senior Full Stack UI Engineer

Intro:

We are FIS. Our technology powers the world’s economy and our teams bring innovation to life. We champion diversity to deliver the best products and solutions for our colleagues, clients and communities. If you’re ready to start learning, growing and making an impact with a career in fintech, we’d like to know: Are you FIS?

About the Role

As a 5, you will design, develop, and enhance scalable web applications that deliver exceptional user experiences and support critical business outcomes. You will collaborate with product, user experience, engineering, and architecture teams to build modern, secure, and high-performing solutions. Success in this role requires balancing technical excellence with customer-centric design, driving architectural decisions, and contributing to the continuous evolution of engineering standards and best practices.

What You Will Be Doing

• Design and develop responsive, scalable web applications using modern front-end technologies and frameworks.
• Partner with product and user experience teams to translate business requirements into intuitive digital experiences.
• Drive application architecture, technical design, and development best practices for front-end and full stack solutions.
• Build reusable, maintainable components that improve development efficiency and consistency.
• Develop and integrate RESTful APIs and backend services to support application functionality and performance.
• Optimize application performance through effective caching strategies, monitoring, and continuous improvement.
• Implement secure authentication, authorization, and data protection practices across applications.
• Collaborate with cross-functional teams to resolve technical challenges and deliver high-quality software solutions.
• Support production environments through troubleshooting, root cause analysis, and continuous enhancement initiatives.
• Contribute to code reviews, testing strategies, documentation, and knowledge sharing within the engineering organization.

Required Qualifications

• Demonstrated 5+ Years experience developing modern web applications using React.js and TypeScript/JavaScript.
• Strong understanding of user-centered design principles and front-end application development.
• Expertise in designing scalable, maintainable, and high-performing software architectures.
• Experience building and consuming RESTful APIs and integrating distributed services.
• Knowledge of authentication protocols, application security principles, and secure coding practices.
• Experience working with relational databases such as PostgreSQL, Oracle, or similar technologies.