I'm a developer at Stack Overflow, my salary is $2,000 a year more than what the calculator spits out with Developer / 5 years experience / 3 skill (I was a 2.7

I'm a developer at Stack Overflow, my salary is $2,000 a year more than what the calculator spits out with Developer / 5 years experience / 3 skill (I was a 2.7 last compensation review, I believe)