The project requires a Developer with experience of building applications that run as a web service (XML, + Java). They must have experience of developing cross web browser 'Plug-ins', and they must have experience of XML encryption and experience of W3C server side configuration. I have a responsibility to my client to protect their interests so I will need the to see examples of the Developers work before the spec can be released. I will also need the Developer to sign a Non-disclosure agreement before full spec is provided.