Pros
I worked at KPMG before joining, and one of the Partners told me I was making a mistake by coming to Schellman. I had reservations after I'd left, especially because I didn't have overly negative experiences like a lot of my Big 4 peers had. Looking back I can honestly say Schellman is an amazing place to work. The work can be demanding, and you will have to learn on the job. We have deadlines and customers that we want to satisfy, which means if you can operate fairly independently and are a quick study you can thrive here. Management puts their money where their mouth is, I was accustomed to the empty promises that the Big 4 would dangle (i.e. good starting salary, hefty raises, bonuses, etc.), but Schellman will blow that out of the water out the gate. I don't get the sense that they really play games here when it comes to that stuff. On top of that, the benefits are top notch, a highlight includes: 401K dollar-for-dollar match up to 6% (will increase to 10% no later than January 1, 2018) of your salary, quarterly bonuses (some quarterly bonuses were larger than my annual Big 4 bonus), fitness expense reimbursement (when traveling the firm reimburses your gym expenses so you can stay in shape), travel bonus (when traveling during the weekend, or when you have to stay until Friday), work from home every Friday, company shutdown for two weeks during Christmas and New Years (firm-wide, meaning people don't expect you to work, what a concept), and company sponsored trainings (to work toward a CISA / CISSP / CIA / CCSK etc.) It sounds like I am bragging, but I feel like Schellman does a lot to make you proud of where you work.
Cons
One of the main cons I hear from seniors is the amount of travel they face. If traveling Monday through Thursday, roughly 50% of the year (give or take based on region) would be difficult, this can be a tough job. There are a lot of perks to traveling as much as we do (i.e. using points to book flights and hotels for vacations, I booked 10 nights at a nice hotel in Southeast Asia completely free using points accrued through work and still had many left over). Another observation seems to be that worklife balance becomes a challenge once a senior gets promoted to manager. It appears that the decision must be mutual (i.e. you want to make manager, and the firm has a business case to promote you), so for anyone considering climbing the ladder, this may be something to be aware of.