Pros
Flexible work hours. A green web page. You might have good experience if you end up in the right department, especially in the areas the company is investing but this is rare. Wrong department (for example services) with obsolete products might end up being a nightmare.
Cons
Company culture does not align with the company values. Not much room for advancement. Lots of rigidity, politics, nepotism and intimidation for management style. Too much competition between people as well as departments. Macho culture of some old departments will not allow women succeed in technical areas. Inefficient. Some managers have mastered the art of looking good on paper, not necessarily in reality. So many business decisions are made through gossip and not facts. Some insecure people in power do not allow others grow.