Pros
The only pros are that it is a big company with a big market share but for sure that's going to reduce as you will see below. Pay is OK.
Cons
Company has a knack for hiring people who are not at all qualified for their jobs especially in sales and even after working here for long time, those people have still not picked up. Criteria for hiring people seems to be only networking or knowing the right people on personal levels or even just being the right color. Experience and technical knowledge is last on their list. Diversity is at rock bottom as visible minorities even though they may be qualified are only at lower levels and absolute know-nothings are at all the higher levels. Case in point is that their modernization sales people literally sub-contracts modernization jobs to a rival company just because the mod sales person is not technically savvy to know what exactly is to be quoted. The rival company then goes to job site and does the survey and presents the quote to the mod sales person who then applies his mark-up and submits to the customer.