Senior React Developer needed for a long-term project within the public administration sector. Responsibilities include developing and optimizing web applications in React, collaborating with designers and backend developers, implementing modern web standards and technologies (Redux, TypeScript, REST API, Material UI), influencing technical decisions, implementing new components, maintaining and improving frontend applications, and integrating new libraries. The role requires strong React experience, excellent CSS skills (SCSS/SASS preferred), REST API knowledge, TypeScript expertise, basic Material UI understanding, Git proficiency, and the ability to navigate existing code and write clean, maintainable code. Experience with Next.js, Gatsby, Cypress, or GraphQL is a plus.