WYSIWYG HTML Editor & Web-Apps for Energy Monitoring

Looking for professional freelancers for long term cooperation. If you meet our expectations you can work on this for 10 to 40 hours a week and will be paid on an hourly basis. You will contribute to specific areas of the web front end of a complex software project. This software is continuously enhanced and tweaked to fit various automation-, telemetry and monitoring-projects. Your part is in a jquery based WYSIWYG HTML editor (see attached screenshot) which is used to create energy monitoring web-pages. The user places widgets on the page which display the state of given back-end data. An important part of this is a Highcharts based charting tool. Specific Web-Applications and configuration tools based on the same jquery-framework and others based on Polymer Web-Components also need to be developed and maintained. The whole project is up and running and the 1.0 release will be shipped in January. Therefor your position will start off with maintenance and the addition of features. You will need the complete set of web development competences but programming, clean & elegant code, software design, & -architecture are foremost. You will be expected to work with a high grade of autonomy, adhere to coding standards and practices and work in a highly professional software development team. While the code base you'll be working with has its issues, all the know how on said software is in the company, so you are not alone. Please provide code samples, references, and your hourly rate.