Pros
Shortly after starting at S-RM in the London office, I was given a large amount of responsibility and opportunities that I didn't at the larger firm I had joined from. This help me develop quickly and I flourished in this environment. My work was also fairly rewarded with a promotion and payrises at each end of year appraisal. I thoroughly enjoyed working with a number of very talented people within the team, and enjoyed helping to grow and develop quite a new team. It's also a very social office and lots of opportunities to spend time with colleagues outside of the office.
Cons
There's a culture of working hard and putting in long hours. Part of this was a function of the spikes of work that came in and part of it was being part of having quite a small and junior team around me. This made me a critical part of a large number of projects and saw me work late nights and weekends to keep on top of them all. I think this is something that will become more manageable as the team grows and the work is more consistent.