Glassdoor says that a letter carrier earns around $50K/year.

Interns still in college can earn that much in Silicon Valley startup, a decent (not stellar) engineer can easily be in the $120K-$180K range.

I don't see how I'm losing no matter what happens to my employer -- I'm getting paid a much higher salary than when I earned working for a more established, non-startup before I was laid off during a large reorganization and I'm doing much more interesting work than I was at the larger company.

https://www.glassdoor.com/Salaries/city-letter-carrier-salar...