Amazon

• Amazon reviews the code that is submitted to production, so you have an opportunity to grow as a developer.
• My work environment is very conducive to collaboration and constant feedback.
• I can write code that is handling Amazon.com production traffic within a week or two. I feel like what I'm doing is actually useful.
• My team has a very high standard for unit tests and other testing strategies, which in turn help you write better code.
• Very flexible work hours. You can come in at 6 and leave at 2, or you can come in at 11 and leave at 7. You can work extra on some days to get an hour or two off on other days. Basically, get your work done is the only standard, which makes me a lot more likely to work well.
• My team has a large diversity: five nationalities, both genders.
• Cereal for our floor is a plus!

Being on call. I'm part of a pretty central service to Amazon, so being on call usually means getting paged for a decently high-severity problem.

It hasn't become an issue yet, but there are three reasons I could see myself leaving the company for:

• Little support for women having and raising children.
• No sponsored opportunities to go back to school. If I want to go back to school, I'll quit and then see who will hire me for my new skillset, rather than Amazon being guaranteed my work.
• My team does not have a level at which you are no longer primary on-call. SDE III's and people who have been there for 7 years are still being woken up at 3 in the morning.