Seeking pro web developer - develop a web-based HTML form designer WYSIWYG

We are seeking a professional web developer for Phase 1 - Development and Implementation of Main Logic and Layout For Web-based HTML Form Designer. The purpose of this assignment is to design and implement the main logic (engine) and layout of a web-based HTML Form Designer. You should implement a web-based tool that have - a toolbar - a canvas - layout widgets. The widgets are show on the toolbar. The widgets can be dragged and dropped on the canvas. The widgets that must be implemented are - html div, html table, bootstrap container, bootstrap row, bootstrap col. The canvas area is an HTML WYSIWYG. Widgets that are dropped on the canvas should be added to the HTML code in the canvas to show in the same time. The HTML layout tags in the canvas can be moved, dragged and dropped around. Required development skills are: HTML, CSS, javascript, JQuery, Twitter Bootstrap We love to hear about your proposal. Please before submitting your proposal, make sure to read carefully the details below. Selection process includes evaluation of your proposed approach for implementation, and interviews. Please in your proposal explain your approach to implement logic of the tool. How you will implement drag’n drop? how you will implement HTML manipulations? etc. In addition, please explain your skills that you would use to implement this project. Check out Pinegrow and Instapage tool to get inspired. More details: HTML form designer is a web-based tool that gives graphical (drag'n drop) capabilities to to users to design and build web HTML pages and forms in WYSIWYG. This tool has widgets on its toolbar that the user can drag'n drop to design their page layouts and contents. Page and widgets have properties that can be configured during design time. This project is aimed at only implementing the main logic and layout of this tool including layout widgets. This project is inspired by Pinegrow tool ([login to view URL]) and Instapage.com. Make sure to check them out. In this project NO third-party form designer/builder shall be used. The logic should be implemented from scratch. It will be possible to use drag'n drop ready to use libraries if necessary. The success of your implementation will be tested by using your implemented logic to build basic layout of a HTML page using html div, html table, bootstrap container, bootstrap row, bootstrap col widgets. The output HTML should be valid and viewable in Google Chrome. using your implemented logic to edit a test HTML page layout that we have prepared before-hand.