Pros
You will learn things, meet smart people, you will be bought with good perks company has (health insurance, 401K, disability, life, work from home policy, flexible hours), you will be entertained one way or another. Just don't have an illusion that the company will value you or your hard work, or how long you had been with the company and your successes in making them money. When its time for ruling to come, whether it is from Americas or UK, to cut overheads or if someone stepped on a wrong toes - people are gone. They rather take your job away than forego a holiday party in the expensive hotel, outing in a ski resort or another executive offsite event. Ok interim place if nothing else comes along until a permanent solution is in place.
Cons
This company, that once was the ONE to work for, in my opinion, became increasingly hypocritical in the last 2.5 years due to a management change. That goes for a group in US as much as for entire global operations. New executives seem to join molded already as the breed that doesn't value their workforce and embrace constant turnover as the way of life. Executives that left in place are crippled with hypocrisy and fear. For all of you in a beginning of your career, should you decide to join, be aware that you are replaceable effective immediately and don't count on a mentorship - your manager most likely be someone not qualified to manage people or work they put in charge of. If you are lucky you will work on something meaningful; though there is a 50/50 chance to stuck in potentially useless project design to please the CEO (Ivor Gatto). For a seasonal professional - make sure to do a due diligence on your specific department and supervisors from an outside source. Some people are great and do care about others (those are extremely overworked, so be prepared), but there less and less of us left and we are overruled on how the business should be run to be healthy, sustainable and include happy employees. And all - watch your back - company culture changed to embrace scapegoating. There had been many cuts over last couple of years. It doesn't come only in a form of layoffs or interdepartmental transfers, there are many resignations across the globe and we learned to recognize sudden retirement as a warning sign of the same nature.