Had similar experience with another large enterprise. I always wondered how come those companies can survive with such friction. Building small internal application was costing millions, 500x more that what you can build as a startup. It took me 3 years to quit.

Also why do you want to work for Amazon and Google? There are many great people there, you will not be noticed. Work for a smaller company, they will pay you more, appreciate everything you do and you will be much happier!