IT work environment is poor. Don't expect to get any special tools or anything that costs money. This place has no interest in spending a dime on improving efficiency or performance. Expect to work with out of support hardware and software. Expect to manually do things that should have been automated. Expect to have your direction changed daily, at a whim, and concrete deadlines set only because somebody told an executive it would happen regardless of feedback.
Remote work is possible, but frowned on. It really depends on your manager. Most of the staff lacks the professional acumen to work remotely or with remote team members. Expect to be isolated and out of the loop if you work remotely. It's likely that you'll be given a finite number of days to do so.
If the company is leveraged to the eyeballs. Everything EVERYTHING that costs money is scrutinized. They don't seem to be in a good cash position. Expect all decisions to be made based on bottom line margin. This will come at a cost to culture, customer service, and your mental well being.
Go with the bread and butter - finance. Avoid the DST units - especially health which will be chaotic and directionless for the next few years while they try to figure out how to salvage the cashflow.
Honestly, if you have any talent, there are much better companies which have much more reasonable demands, and value their people. SS&C is simply a numbers game. If you go here to work, have the mindset of a contractor or you'll end up disappointed.