We do just about everything. We have people working in databases and spreadsheets sorting and organizing data, we have people that monitor projects at Pratt and make sure they stay on time, basically engineering support.
Personally, I help update engine cross sections, do clash analysis on the 3D engine models (make sure all the parts fit with out interference) and I'm starting a new project in January.
We also have people working in the design and modeling of parts, and things I'm probably not even aware of. Typically they hire someone to a job offer they get from pratt, so they would be looking for someone with skills for that particular project, but once you get certain training, you can be much more flexible with the projects you work on.