There was actually a fairly high profile boomerang in the news last year - and at Amazon, no less - Sukumar Rathnam went from engineering manager at Amazon to C

There was actually a fairly high profile boomerang in the news last year - and at Amazon, no less - Sukumar Rathnam went from engineering manager at Amazon to CTO at Uber to VP of e-commerce services at Amazon, all in the span of less than two years.