Manage a Tech Support PPC Campaign

I need an expert in internet marketing to handle a PPC campaign for me. There are tough rules in for bing, google and many more so definitely we would want results. I have a tech support business so lead generation is critical. There are few important conditions he/she should meet; 1) Experienced. 2) Available as per agenda. 3) Plan for a long term. Short term need not apply. 4) To be paid after proving results. 5) Needs to sign NDA if required. 6) Available on skype. Well only genuine people do apply, non qualifying applicants or less experienced will not be considered. I need an result oriented expert with proven record .