If written in 2014, I would have said that there we minimal negatives at the company; however, large scale organizational shifts over the past 8 - 10 months have resulted in a large-scale loss of experienced talent from the company across various departments.
While many of the positive reviews that you see on this site are genuine, the negative experiences posted in other reviews are also very real. Employees are now faced with extremely high expectations related to client satisfaction with the product, without controlling the product quality itself. Providing clear and accurate expectations to both internal and external clients is difficult at best due to OLA's that are stated, but rarely enforced.
Travel requirements for client facing positions have also greatly increased in the past eight months, making it increasingly difficult to maintain a work-life balance, especially for those with families and children.
My advice to those looking at applying with the company would be to carefully study the reviews here on Glassdoor, and to also speak with anyone that you know who has spent more than one year with the company (current and former employees included). These individuals will be able to provide much needed perspective into how things have changed and where things are headed within the company.
Ask the difficult questions early in your interview and press for quality responses to areas of concern in order to be sure that the position is an appropriate fit for you.
Finally, understand that this is not the same company that you may have heard about two or three years ago. Corporate growth and outside investment have increased pressure to be more efficient and less frivolous with internal perks and benefits. Once you consider that information, make the best choice for you personally.