I am a senior developer now with 8 years of experience on serious projects, and have been in IT probably for 20 years; I have tried to address on many occasions a simple private email for many companies for different subjects; They never respond.

On "at the request of ...", it looks like we are in the consumerism at its finest in IT, companies only communicate with each other, they have no relation with any entity outside of that, if it is not a consumer.