Cyril Grandjean is graduated from the school Supinfo (France) and from Oxford Brookes University (United Kingdom). He is currently working for company Ausy as a software engineer. During his professional experience, he has mainly developed web projects in PHP or Java. He also spends some of his spare time developing applications in C# or mobile applications. On his website www.cyril-grandjean.co.uk, he also writes some articles about software development. During his past job for the company Distrame, he contributed to the development of a solution called Efficacenergie, which measures the energy consumption (electricity, water, gas, and so on) of a building. By accessing a web interface developed with Ext-JS library, customers can analyze their own energy consumption through customizable charts developed with Highcharts library.