Pros
Great benefits. Very friendly co-workers and atmosphere. They offer a plethora of self study training materials in their training portal for almost anything you can think of. ESPP with 15% discount and option for Roth 401K as well as traditional 401K. Growing company that is very strong and great for investment.
Cons
The Peter Principle in all its glory. Comcast encourages hiring form within, but you have to apply to open jobs. They very rarely promote. They will give preference to internal versus external hires. They have a maximum 10-12% ceiling for pay increase when you move up, and a maximum 3.5% annual raise (but don't expect that much unless you get "highly effective" for every criteria of your annual review). If you start out underpaid because you got your foot in the door after college, you will forever be underpaid. Unless... you jump around positions taking advantage of the 10%. What you get is people shifting around constantly, nobody actually staying in their role long enough to learn it, managers that have reached their incompetency levels, and their managers are so incompetent that they don't notice their subordinates incompetence. Nobody likes efficiency because that means less busy work. As long as they look busy, the managers are so buried in their own troubles they don't know who is under performing. Also, they loom their amazing benefits over your head as justification for why we are paid so far below the industry average.