Pros
You somewhat get a good work-life balance as you are not having to put many "after hours" in to your work. The colleagues are great as well. You get a lot of PTO, but they complain when you take it. My advice is to just use your PTO because either way, management will not be happy.
Cons
There are way to many processes that make the sales cycle extremely slow and inefficient. You spend more time on internal tasks and non-revenue generating processes than you do selling. Everything you do is tracked and micro managed, and the KPI's are unrealistic along with all of the other mundane tasks that we have to do. New processes are added in every time one small thing happens so they can slap your hand when something goes wrong as that is their solution to anything. That's what happens with you work for a company run by engineers, not business minded people. There were very few promotions through my time there and no internal growth path for employees. People have to leave the company for a promotion. I saw 2 promotions on my team in 3 years. AspenTech is not customer focused and is a very difficult environment to sell in. It is a good resume builder though, as the industry recognizes how difficult it is to work for AspenTech. It is an old company that is stuck in its old ways.