I am a full-stack Web & Mobile Developer and have 4+ years of experience in Node.js, React.js, Angular.js, Firebase, Typescript, Express.js, React Native, MongoDB, Express.js, Postgresql, AWS, and we also have expertise in various other Javascript-based technologies, I do test development by using test tools like Jasmine, Mocha, Junit, karma, etc. I have good knowledge with REST API, XML, JSON, and other web services.