no way are there large numbers of CS PHd entry level jobs at $90K floating around out there. you are dreaming. its becoming a niche market in the US, the top graduates from the top schools like MIT may be getting those jobs - but few others are.
Do you know how many Ph.Ds in computer science are granted each year? The last statistic I saw was, around 800. A good percentage of those go into teaching. The supply is lower than the demand.