Amazon

Retail and Search are good. They actually work on developing new features and there are lots of opportunities to work on cutting-edge technologies.

Amazon highly focuses on Perl-Mason and Java.

Many systems are already in place, so you can reuse existing systems and work on developing new features. There are very good monitoring tools and it's a great place to learn if you land in the right org.

An organization like that is not a good organization. They have a very high operational load, and projects are not very good.

If you are hired in a support role at Amazon.com, then becoming an SDE is very challenging. People lie, saying you will have the opportunity to become an SDE by doing development, but the fact is that support roles do not really get any development opportunities, so beware.

It's very dynamic and agile, so you end up pushing incomplete features or working very long hours to meet deadlines.