**Senior Front-End Developer** **Job Responsibilities:** * Develop and maintain modern, high-performance, and easily maintainable interfaces. * Use React.js, JavaScript (ES6+), HTML5, and CSS3. * Work with native browser APIs (Storage, Cache, basic Service Workers, Web Animations, IntersectionObserver). * Apply front-end performance best practices (preloading, lazy loading, code splitting, asset optimization). * Perform code versioning using Git. * Consume REST APIs. * Contribute to automated testing and code maintenance best practices. * Implement responsive design and UX concepts. **Behavioral Profile:** Proactive professional with interest in continuous learning, ability to work well in teams, and willingness to exchange ideas and collaboratively build solutions. Attention to code quality, software development best practices, and commitment to consistent, excellent results. **Education:** Completed or ongoing higher education in IT or related fields **Location:** Rodoviário District **Working Hours:** Monday to Friday – 08:00 AM to 06:00 PM, with flexibility for hybrid or remote work **Salary:** Open to candidate's expectations **Benefits:** VT + Ifood Food Card Employment Type: CLT (Full-time) Pay: R$5,000.00 - R$7,000.00 per month Benefits: * Meal Allowance * Transportation Allowance Selection Questions: * How do you usually handle disagreements within the team regarding a technical solution? Can you provide an example of how you managed such a situation? * Tell us about a project where you had to optimize the performance of a front-end application. What techniques or tools did you use (e.g., lazy loading, code splitting, asset optimization), and what results did you achieve?