> Your comment on "retention" is factually incorrect.
I disagree.
> First the number of Amazon hires in "tech roles" increases by ~50% per year. i.e., in year 1 there are 1,000 SDEs hired, year 2 is 1,500, year 3 is 2,250, year 4 is 3,375 and so on.
This could not possibly be true. If it was, they would be hiring ~1.5M technical people a year (since they've been in business since 1997). Perhaps you meant since 2005, but that would still represent 58k people per year hired. According to this article (http://www.geekwire.com/2015/huge-growth-amazon-reaches-2224...), they only have 24k in the state of Washington, where the vast number of people are. So nothing about this statement is true.
> "Attrition" represents the number of individuals who leave for any reason. This may be because the employee terminates employment or the company terminates employment. Attrition levels are comparable to the rest of the tech industry, ~15% of the current population per year.
Can you show me that data? about 15% per year? I've seen vastly different numbers internally, but would prefer not be sued in sharing them.
> "Tenure" is the length of employment. Because hiring greatly exceeds attrition you should expect a relatively low average and median retention. As I recall Amazon is approximately 12 months median tenure. This is comparable to Google at ~13 months, for example.
Correct, but these numbers are heavily obfuscated due to part time hires and vendors.
> Lastly the employees current tenure does not have a substantial impact on the probability of their attrition. Indeed the average tenure at exit is somewhere around 3 years.
Again, show me the data. I've seen the internal stuff. If you'd like not to believe me, feel free; I know I don't believe you.