Pros
Some very nice and talented people among the rank and file, exposure to a wide variety of clients and industries, and the opportunity to work pretty much anywhere in the US.
Cons
All depends on your expectations. TEK is part of Allegis Group, a $7 billion conglomerate of staff augmentation firms. They like to think that they are are systems integrator, but the leadership doesn't get it. They pay lip service to this, but when it comes down to it they won't do what's needed to succeed in this space. The company and all key executives roles are manned by staff aug veterans. They know how to close a deal but are clueless about investing in their staff, in knowledge and skills creation, in developing standardized products and services. They'll talk about it and how great their commitment is in this area, but they have zero attention span when it comes time to actually make the investment in time, people and resources. In the end, TEK is a giant staff augmentation sales firm with pretentions of being something bigger and more sophisticated. If staff aug is all you need or want to work for, they're fine. If you need something more or want to work for something more sophisticated, look elsewhere.