React UI Developer

We are looking for a skilled and passionate React UI Developer to design, develop, and maintain engaging and efficient user interfaces. This role involves working on a diverse range of projects, from traditional web applications consuming Java REST services to pioneering modern solutions integrated with Large Language Models (LLMs). The ideal candidate will possess a strong understanding of front-end development best practices, a keen eye for detail, and the ability to translate complex requirements into seamless user experiences. Responsibilities: * Develop and maintain high-quality, responsive, and user-friendly web applications using React.js and its ecosystem (e.g., Redux, Context API, React Router). * Collaborate with back-end developers to integrate front-end applications with Java RESTful APIs, ensuring efficient data exchange and robust error handling. * Implement pixel-perfect UIs from design mockups and wireframes, ensuring cross-browser compatibility and optimal performance. * Design and build intuitive user interfaces for modern applications that interact with LLM-powered solutions, including chat interfaces, data visualization, and interactive AI outputs. * Work closely with product managers, UX/UI designers, and other stakeholders to understand requirements and translate them into technical specifications and elegant user experiences. * Ensure application scalability, security, and maintainability by adhering to coding standards, performing code reviews, and contributing to architectural discussions. * Implement and maintain unit, integration, and end-to-end tests to ensure the reliability and quality of the applications. * Optimize front-end performance for speed and responsiveness, addressing issues like load times, rendering, and interactivity. * Stay up-to-date with emerging front-end technologies, React.js advancements, and best practices in UI/UX design. * Participate in the entire software development lifecycle, from concept and design to testing and deployment. Required Qualifications: * Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience. * 5+ years of professional experience in front-end web development, with significant experience in React.js. * Strong proficiency in JavaScript (ES6+), HTML5, and CSS3, including modern CSS frameworks or preprocessors (e.g., SASS, styled-components, Tailwind CSS). * Demonstrable experience integrating front-end applications with back-end Java RESTful services. * Familiarity with state management libraries (e.g., Redux, Zustand) and client-side routing. * Experience with version control systems (e.g., Git). * Solid understanding of modern web development build tools (e.g., Webpack, Vite). * Ability to debug complex front-end issues and optimize performance. * Excellent problem-solving skills, attention to detail, and a commitment to writing clean, maintainable code. * Strong communication and collaboration skills. \------------------------------------------------------ ## Job Family Group: Technology \------------------------------------------------------ ## Job Family: Applications Development \------------------------------------------------------ ## Time Type: Full time \------------------------------------------------------ ## Most Relevant Skills Please see the requirements listed above. \------------------------------------------------------ ## Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. \------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.