Vantaggi
The firm as a great reputation, it's built itself based on past performances and quality deliverables. There's more focus on "flexibility" with the concept of work-where-you-live in order to reduce commute times for employees. There is an abundance of networking opportunities, just take the initiative and sign yourself up. There are also lots of functional communities that you can join to learn more about a particular area within the firm, as well as personal interest communities (intramural sports, adventure clubs, etc.).
Svantaggi
It's not the same as it was even 5 years ago. In speaking with other veteran employees (who have been/was with the firm for 5+ years), everyone has shared the same feelings. Since going public, Booz Allen has become less of a consulting company and more of another contracting company (just hiring people to fill a seat on a contract). Times are tough and they've cut back on a lot of prior benefits like team outings, new laptops, raises, profit sharing (previous ~10% annually into your retirement fund, now switching to 6% matching), personal time off (we actually lost 2 days of time off when they switched our holiday schedule), general spending on administrative overhead. Personal career growth is limited by leadership above you. Promotions are essentially dependent on if your project/market is growing and if you were part of that growth. If you're on a bad project in a contracting market, there's no business case to get you promoted to upper management (e.g., Lead Associate and above). Leadership also needs to give you the opportunity to demonstrate that you can operate at that next level - if you don't demonstrate it, you don't get the check mark on your annual assessment. Speaking of assessment, the process is pretty subjective. Again, it all depends on who your senior managers are and whether they're willing to fight for your promotion in front of the assessment board. There are supposed to be competencies that you are assessed against, but with the new creative writing format, you can really stretch how you word your demonstrated competencies to fit the bucket. And again, that final assessment (written by your manager) is all dependent on your manager.