react.js , Performance Tuning, Integration Testing, Mongoose, Api Testing, Agile, Scrum, Express.Js, Redux, Node.js, Responsive Design, Jira, Css3, Asynchronous programming, Git, Html5, Authentication, MongoDB, Postman, Rest Apis, Data protection practices, Context API, Authorization, Node.js debugging, UI state management, Promises, Component lifecycle understanding, Hooks