Job Summary: We are looking for a proactive Senior Front-end Developer to develop and enhance web applications, participate in technical decisions, and ensure coding best practices. Key Highlights: 1. Collaborative work with the Product team (UX, Back-end, and Database) 2. Focus on performance, scalability, and a great user experience 3. Active participation in technical and architectural decisions We are seeking a **Senior Front\-end Developer** who is proactive and has strong execution capabilities. We are looking for someone who contributes to technical decisions, proposes improvements, and collaborates effectively with the Product team (UX, Back\-end, and Database). **Responsibilities** * Develop and enhance web applications with a focus on performance, scalability, and a great user experience * Actively participate in technical and architectural decisions * Ensure coding best practices, version control, and project organization * Optimize application performance and SEO * Contribute to code reviews and support team development **Mandatory Requirements** * Solid Front-end experience (Senior level) * Proficiency in Next.js * Advanced experience with React.js * Strong knowledge of JavaScript (ES6\+), HTML5, and CSS3 * Experience consuming REST APIs * Knowledge of Git version control * Good communication skills and a collaborative attitude **Expected Profile** * Proactivity and autonomy * Problem-solving ability with strategic vision * Organization and commitment to deliverables * Mindset of continuous improvement **Contract Model:** Individual Contractor (PJ) **Monthly Service Fee:** R$12\.000,00 Payment: R$12\.000,00 per month Work Location: Remote