Back-end developer - Rewamp of existing website and addition of new features

Looking for an experienced back-end/full-stack developer. We have an existing website at www.moodwonder.com. We are about to implement new features and fix known bugs. Must be able to experience in delivering with the following tech stack:React, Alt, Flux, Nodejs, MongoDB, Express, Webpack Tools: Asana, Git Additional npm packages used in development: - React router - routing solution for react - Grunt : JS task runner - Babel : for writing javascript in ES6 - D3 : charting library creating interactive charts using json object modal - Mocha with [login to view URL] : assertion for backend unit testing - Karma : for front end unit testing - I18n : for localization and language - eslint : for checking javascript syntax - Browsersync - for real time code update and testing Note: Since npm package ecosystem has lots of libraries and tools available. It is better to use them as node module packages (defined in [login to view URL]) instead of adding external jQuery plugins (in case you are planning to use jQuery). This contract is for finishing one feature that is already completed. Praising colleague feature must be fixed. 2. In "Praise colleague" ([login to view URL]) after clicking a thumbs up button, a pop-up will appear. The user can write comments/praises into the box. Currently we are not storing these comments at all. This should be fixes so that the comments and the giver of the comment is stored and can be shown in the receiver's profile page ([login to view URL]). Also an email to receiver should be sent containing the praises. We have the design ready for implementation for user to give praises and show praises you have received.