We are looking for a Mid-level Front-end Developer with solid experience in creating modern, performant, and responsive interfaces. This person will work with React and Next.js, applying best practices in component architecture, version control, and accessibility, focusing on code quality and team collaboration. Responsibilities: * Develop and maintain scalable and performant web interfaces. * Collaborate with designers and back-end developers to integrate solutions. * Participate in code reviews and contribute to continuous improvement of the codebase. * Implement best practices in usability, testing, and accessibility. * Suggest technical improvements and front-end architecture optimizations. Requirements: * Proficiency in HTML5, CSS3 (Flexbox, Grid), and JavaScript/TypeScript. * Experience with React.js, Hooks, Context API, and Next.js (SSR/SSG). * Knowledge of state management (Redux, Zustand, Recoil). * Integration with RESTful APIs and GraphQL. * Experience with componentization, unit testing, and performance optimization. * Good practices with Git, CI/CD, and code review. * Understanding of UX/UI and web accessibility (WCAG). We are looking for someone who is: * Collaborative and detail-oriented. * Enjoys creating functional, performant interfaces with excellent user experience. * Values best practices, organization, and continuous learning, contributing to a collaborative and high-quality technical environment. Additional important information: * PJ contract * 100% in-person at the center of Curitiba/PR