Jefferson B.

I am a Full Stack JavaScript Developer with professional experience building modern web and mobile applications using React, React Native, Next.js, TypeScript, Node.js, and NestJS. I have experience working on real production applications, both independently and within teams, developing scalable, high-performance, and user-focused solutions. My experience includes: • React.js and Next.js applications • React Native mobile apps (Expo and CLI) • TypeScript development • REST API integrations • Firebase integration • Push notifications with OneSignal and Firebase • WebSockets and real-time features • Admin dashboards and analytics • SEO-focused landing pages • PWAs (Progressive Web Apps) • Offline-first mobile applications • File and media uploads • Native mobile integrations • Accessibility implementation for visually impaired users • Internationalization (i18n / multilingual apps) • Performance optimization and lazy loading • E2E testing • Responsive applications for web and mobile I also worked with Augmented Reality (AR) mobile applications using Viro React, integrating 2D and 3D models into React Native apps. I am comfortable handling complete application development, maintenance of production systems, third-party API integrations, and performance improvements. I can communicate fluently in written English and work efficiently with international teams and documentation. My focus is delivering clean, maintainable, and scalable solutions with great user experience.