Pros
TransPerfect can be a good place for someone who is primarily interested in a solid compensation package. There is a lot of opportunity for young professionals to gain access to results-oriented sales and/or project management roles. It is a young company and if you are looking for a "work hard/play hard" type of place, this could be a good fit.
Cons
There is very little separation of work and life. Most employees are expected to attend social functions outside of the office which becomes burdensome since we are typically working a large number of hours. There is a lot of turnover in the junior-level positions as those who don't "buy-in" typically use this as an opportunity to add to their resume before getting burnt out or finding another position. Another problem is that because the company grew so quickly, they didn't have time to get the proper infrastructure in place. This causes some problems when it comes to issues with Human Resources, Training, etc.