Pros
Geneca provides an incredible work environment. There are constantly extracurricular activities to take part in (from sports to coding competitions) that allow new hires to get absorbed in the Geneca culture. From a development perspective, I find the variety of technologies and languages to be an excellent way for me to diversify my experience right out of college. I have never met another developer here that wasn't jumping out of their seat to help someone with a problem. Everyone is extremely easy to get along with and has the experience and skill to get the job done right.
Kontras
It is always possible that you end up on a client project that requires you to work at their location. However Geneca tries hard to allow those project teams to work from our location in Oak Brook. So far after working here for almost two years, I have yet to have to work at another location. However, I've still had the opportunity to work on multiple client projects. I wouldn't say this is the norm, however. But Geneca does a good job of hearing developers concerns, and does their best to get you on projects you have an interest in.