Pros
The best reason to work for TEKsystems is to get great training. You will learn IT Staffing from one of the best technical recruiting firms in Northern America. At TEKsystems, they do a great job of creating a team environment. They give you all of the training and resources to be successful. As far as tools, they have the best tools available to a Recruiter. If you are not successful with TEKsystems, it is not because of training or tools. I would recommend anyone who wants to see if IT Staffing is the right career for them to get a job at TEKsystems.
Cons
Once you have developed the skills to be a good at IT Staffing, TEKsystems does not pay market rate for experience talent. They are not very flexible with how they do business internally or externally. It is either the TEKsystems way or nothing. If you disagree with them, they will do whatever it takes to shut you up. Instead of embracing their senior Account Managers and Recruiters, they consistently tell them they are luck to work for them. They are the "fast food" version of IT Staffing. I think it is a great place to learn the business, but you are much happier once you leave.