Pros
Fun environment, successful (growing) company, opportunity for advancement, opportunity to expand knowledge and skills, decent pay, casual atmosphere (when not client-facing).
Cons
Rackspace's volatile revenue growth has led to the promotion of many unqualified mid-managers, either for lack of other options or because they are promoted by friends. The teams beneath these poor managers suffer as a result. The company has a very "in club" environment that looks out for each other rather than the best interests of the company or all employees. Support staff is considered on call 24/7, which can be upsetting when you're trying to achieve a healthy work-life balance with family, friends, hobbies, and sleep. Much of the company's financial success can be attributed to good real estate wins (Dallas DC & San Antonio HQ) and are not indicative of a successful business model via products and services. Long-term gains may not be as lucrative as the company's early years.