I develop windows applications or open source or web. A windows application is any interface with client / server architecture. An open source tool is any custom tool conforming to the client's request always in client / server mode. This area also includes everything that is online or offline data extraction and all that is automatic data processing. The development of web application is also part of my skills according to the customer's request either in framework, cms or backend or frontend. All these experiences are acquired over 12 years.