I'm Lei Jiaying, a full stack developer with a strong foundation in Python and JavaScript, building web and mobile applications using React, Angular, Node.js, and REST APIs. I collaborate across the SDLC, work with relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, Firebase), containerization with Docker, and cloud platforms like AWS, always writing clean, secure, and efficient code while embracing Agile practices. I'm a proactive learner who enjoys translating complex requirements into scalable software. In recent projects, I built a task management mobile app with real-time data synchronization and a POS system prototype, focusing on robust back-end services and an intuitive UI, complemented by thorough documentation to support maintenance and future enhancements.…I'm Lei Jiaying, a full stack developer with a strong foundation in Python and JavaScript, building web and mobile applications using React, Angular, Node.js, and REST APIs. I collaborate across the SDLC, work with relational and NoSQL databases (PostgreSQL, MySQL, MongoDB, Firebase), containerization with Docker, and cloud platforms like AWS, always writing clean, secure, and efficient code while embracing Agile practices. I'm a proactive learner who enjoys translating complex requirements into scalable software. In recent projects, I built a task management mobile app with real-time data synchronization and a POS system prototype, focusing on robust back-end services and an intuitive UI, complemented by thorough documentation to support maintenance and future enhancements.WWWW…