I've developed professional web applications since the late 1990s using a wide variety of tools and platforms, and in many different applied fields, including financial trading, e-commerce, biotechnology, scientific data processing, and business-to-business. Since 2009 I've chosen to focus on the use of Python/Django used in conjunction with JavaScript libraries such as Dojo and JQuery to create back-to-front full systems that include rich user experiences in the browser.