Cyril Grandjean is graduated from the school Supinfo (France) and from Oxford Brookes University (United Kingdom). He is currently working for the company NQI as a software engineer. During his professional experience, he has mainly developed web projects in PHP and Java. He also spends some of his spare time developing web or mobile applications. On his website https://www.cyril-grandjean.fr He also writes some articles about software development. During his past job for the company Distrame, he participated in 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 the Ext-JS library, customers can analyze their own energy consumption through customizable charts developed with the Highcharts library.