Amazon

The company is sanely run and tries to improve itself constantly.

Within retail, at least, there can be a little too much churn when trying to coordinate between large organizations.

Some say that you have to work crazy hours. Personally, it was less than at any other job I have held—far better than most startups—but I presume that it depends on where you end up in the company. It's a big place; I expect that you can find almost any working environment somewhere.

You should create a tool that tracks projects and estimates, company-wide, with the connected dependencies across teams as part of the declaration. This would create a dependency chain between all teams and organizations. When things change, it would notify everyone affected and update estimates across the company. It would also allow hotspots to be identified where, because of demand and necessity, some teams end up with a backlog of years' worth of requests, but insufficient manpower to deal with it. This would make them a bottleneck for others and lead to the creation of competing products within the company.