Job Summary: We are looking for a talented and motivated Full Stack Developer II to work on the development and maintenance of back-end and front-end applications, collaborating with teams and contributing to continuous improvement. Key Highlights: 1. Passion for connecting people and providing support 2. Next step in your career within a dynamic and innovative environment 3. Contribution to the continuous improvement of processes and infrastructure At 4U EdTech, we believe in the transformative power of education. With our innovative approach, we are redefining learning and opening new pathways for the future. We are seeking a talented and motivated Full Stack Developer II to join our team! If you are passionate about connecting people, providing support, and wish to take the next step in your career within a dynamic and innovative environment, this is the perfect opportunity for you. **Your Responsibilities:** Develop and maintain back-end applications in Node.js and front-end applications using modern frameworks (React, Vue or similar); Integrate RESTful APIs and WebSockets between internal and external services; Implement authentication, authorization, and security best practices; Participate in the architecture and modeling of relational and non-relational databases (MySQL, MongoDB, etc.); Collaborate with product and design teams to define features and interfaces; Perform code reviews, testing, and deployments to production environments; Contribute to the continuous improvement of development processes and infrastructure. **Requirements:** Bachelor’s degree in Computer Science, Software Engineering, Systems Analysis and Development, or related fields (completed or in progress); Strong knowledge of Node.js (Express, NestJS, or similar frameworks); Proficiency in JavaScript/TypeScript, HTML5, CSS3, and front-end frameworks (React, Vue, Angular, etc.); Experience with relational and non-relational databases; Knowledge of version control (Git) and CI/CD best practices; Understanding of API architecture, REST, and microservices; Experience integrating with payment platforms (Pagar.me, GetNet, Mercado Pago); Experience with educational platforms (LMS, e-learning) is a plus; Knowledge of Artificial Intelligence (AI) solutions—especially the use of generative model APIs, automation, or intelligent assistants—is considered a significant advantage. **What We Offer:** Meal/Voucher allowance (BRL 35 per day); Unimed health and dental insurance (with only BRL 1 deducted from payroll) after probation period; 100% scholarship for public sector exam prep courses or financial certifications + 3 additional scholarships per year to gift to friends or family; Soft drinks available at the office for hybrid work schedule; Fresh fruit available at the office for hybrid work schedule; Birthday day off and recognition day off (refer a friend); Pool table, arcade games, and lounge chairs for comfort and relaxation during breaks for hybrid work schedule; Inclusive and relaxed work environment.