Pros
Nationstar continues to grow quickly and usually makes money---difficult traits to find in many companies these days. However, as Ocwen (chief competitor) has mostly collapsed, many of its upper and executive leadership (and assets) have come to Nationstar especially via Robert Stiles, the CFO (an Ocwen alum).
Other pros: Decent work life balance, office location, benefits (anything less than 3 weeks vacation is a crime now), and a couple of teams within Nationstar are absolutely stellar (although people continue to leave). Jay Bray is a fantastic CEO and deserves much better than Ocwen alums Robert Stiles, Rich Delgado, Michael Antonishak, etc. In fact, Jay Bray is perhaps the most skilled (yet unlucky in terms of his former Ocwen lieutenants) executive leaders that I've ever worked for.
Cons
Finance and accounting staff continue to depart at a record pace, not only as lawsuits pile up due to Nationstar's handling of its recent new stock offering, but because most sense the company is dangerous. Its majority owner, Fortress, abuses its position with Nationstar regularly in financial matters, and this only complicates operations within Nationstar itself.
Yes, there will continue to be many jobs available in finance and accounting at Nationstar that pay appropriately (although at the moment, so many new faces have settled in that it will likely take 6+ months for the next exodus). But be profoundly wary.