+ Creation of dozens of websites. + Maintenance and evolution of existing applications in C #. + Development of user interfaces in MVC. + Development of various web applications (interfaces and web services) for managing the settings of invoicing and unpaid Environment: C #, MVC, SQL, Entity. + Development of a web application (interfaces and web services) and mobile (in progress) which allows the use of ERP software (compatible with Sage, Wavesoft and Divalto) and driving the business in a mobile way.