Design, develop, and maintain the core backend logic (Node.js) and the administrative panel (React Native), as well as provide basic support to existing functionalities in a complementary application developed in PHP. * Develop and maintain features in Node.js and React Native. * Implement and consume RESTful APIs. * Integrate external services (payments, authentication, notifications). * Optimize system performance, security, and scalability. * Document code and collaborate in technical reviews. * Read and modify code in PHP (Laravel, Slim, or vanilla PHP). * Perform corrective/preventive maintenance on PHP modules. * Integrate PHP functionalities with services from the new backend or frontend. Job type: Full-time Salary: $8,000.00 - $15,000.00 per month Work schedule: * 8-hour shift Work location: On-site employment