Pros
I worked at Liberty Mutual for a 15+ years. During that time, I was able to transition from an individual Software Development role into a leadership role in agile project management. There were many people who had long careers at Liberty. They invest in employee development and it was usually clear what an individual needed to thrive there. What I loved most were the people I worked with. There was a culture of honesty and collaboration. People were open to help each other through tough times. Everyone respected each other and we knew that people had lives outside of work.
Cons
Liberty is going through a large restructure right now due to less than stellar performance last year. They have cut IT staff in the US significantly especially those in dedicated Scrum Master roles. If you are in the agile project management space - there is definitely a shift away from dedicated Scrum roles at Liberty. I expect they are shifting away from Agile Project Management to something else. This might have to do with shifts in upper management and how they want to restructure the company to suit their vision. Liberty Mutual management may want a slimmer cheaper IT department and cutting labor is the easiest way to get to that.