Senior Engineer (React Native / Node.js)

Description

Job Summary: NIO is seeking a Senior Engineer (React Native / Node.js) to develop and maintain robust, scalable mobile applications, leveraging expertise to build innovative solutions within a dynamic and collaborative culture. Key Highlights: 1. Work with autonomy, passion, and commitment to achieve results. 2. Create innovative solutions that will impact users and the company's success. 3. Join a team that values innovation, collaboration, and technological excellence. At NIO, we believe technology connects people and transforms the future. We are an innovative company focused on excellence, operating with a dynamic and collaborative culture. Our team works with autonomy, passion, and commitment, always striving for the best results. We are looking for a Senior Engineer (React Native / Node.js) to join our team. You will be responsible for developing and maintaining robust, scalable mobile applications, ensuring high performance and usability. Your expertise in React Native and Node.js will be essential to create innovative solutions that directly impact our users and the company's success. Join a team that values innovation, collaboration, and continuous pursuit of technological excellence. **Responsibilities and Duties** * Develop and maintain robust, scalable mobile applications using React Native. * Design and evolve backend APIs and services in Node.js with a focus on security and efficiency. * Optimize application performance using Redis for caching and message queues. * Model and manage data in MongoDB, ensuring scalability. * Implement integrations with external systems via REST APIs and WebSockets. **Requirements and Qualifications** * Solid experience in mobile development with React Native (Android and iOS). * Advanced experience in Node.js (Express, NestJS, or similar frameworks). * Proficiency in NoSQL databases (MongoDB) and Redis. * Experience with microservices architecture and real-time messaging. * Knowledge of CI/CD (GitLab, GitHub Actions, ArgoCD, or similar tools). * Experience with cloud platforms (AWS, GCP, or Azure). * Ability to write clean, reusable, and scalable code. * Experience with monitoring and observability (Prometheus, Grafana, Loki, etc.) is a plus. * Interest in full-stack development, understanding the entire application flow (frontend, backend, and data). * Technical English for reading documentation. * Bachelor’s degree in Computer Science, Software Engineering, or related fields. **Additional Information** Benefits: * Meal Allowance and/or Food Voucher * Transportation Allowance * Health Insurance * Dental Insurance * Life Insurance * Private Pension Plan * Profit-Sharing Program (PPR) * Pharmacy Allowance * Childcare Allowance * Flexible Working Hours * V.tal Benefits Club * Extended Maternity Leave (6 months) * Extended Paternity Leave (20 days) **THE FUTURE BEGINS HERE — AND WE’LL BUILD IT TOGETHER WITH YOU** ---------------------------------------------------------------- **We are V.tal, a company born with the purpose of enabling digital connection and transforming people’s lives.** We work to help position Brazil among the world’s most digitally advanced countries, promoting digital inclusion, driving new businesses, and stimulating regional development. This is possible because we launched with Brazil’s largest fiber-optic network and a team that delivers results. We operate as a neutral, shared network, collaborating with telecom operators, ISPs, and partners of all sizes and regions — and we’re proud of it. This robust infrastructure enables us to offer extensive coverage and reach, helping our customers go further while optimizing their investments. **OUR TEAM** We are connected, agile, and driven by outstanding results. Our workplace is light-hearted because it is built by people who collaborate, trust each other, and celebrate every achievement. Here, we don’t make excuses — we find solutions. With this high-performance team, we work daily to position Brazil among the world’s most digitally advanced countries, promoting digital inclusion and socioeconomic development. **OUR CORE PRINCIPLES** **We play fair and trust each other.** **Continuous evolution and learning is our mantra. Without learning, there is no evolution.** **We are obsessed with excellence and high performance. The pursuit of results happens daily in every decision.** **Work hard, play hard! We are focused and foster a healthy environment.** **DO YOU IDENTIFY WITH OUR PROPOSAL? THEN JOIN US TODAY TO BUILD THE FUTURE TOGETHER!** Remember that internet that simply works — connecting you seamlessly to what truly matters, without unpleasant surprises? We know the telecommunications industry needs to change. And we’re here to make it happen. We are **Nio**, a technology company delivering fiber-optic internet solutions for homes and businesses across Brazil. We already serve **approximately 4 million customers**, and this is only the beginning. **Why does Nio exist?** **Our mission:** To drive human and business evolution through technology. **Our essence:** We look at people — and look ahead. Because we believe innovation only makes sense when it improves people’s lives. And this applies not only to our customers but also to those who make it all happen: **the people who work here.** **Working at Nio means…** Being part of a company that puts the customer at the center of everything. Having autonomy and room to grow. Working alongside people who believe in what they do. Building something new in a collaborative, energetic environment. **We’re just getting started — and you can be part of this transformation. Join Nio and help create Brazil’s new digital era!**