As an engineer, your $150k is pretty much guaranteed. In sales, though, it's entirely possible to spend several years wheedling the large client that would get

As an engineer, your $150k is pretty much guaranteed. In sales, though, it's entirely possible to spend several years wheedling the large client that would get you the $600k payday... and the day before the board is supposed to sign off on the deal, their CEO changes and the new guy puts everything on ice. This happens a lot, and it's brutal.