Nothing specific. Anything that has mechanical design, electronics or software development. I think research topics should be left to the academics themselves. I am interested in supporting infrastructure / software / hardware.
Most universities should have some kind of job openings website. I used to work at one and that's where everything was posted. But keep in mind that a lot of universities that aren't well funded will want to pay their own students to do the work, even if they're not as skilled.