Working at OGSystems over the summer was a great experience. Even as an intern, I was given plenty of responsibility. I was able to make meaningful contributions to two flagship products, while receiving guidance and mentorship from experienced offensive security professionals and software developers. OGSystems has an awesome culture and super-flat hierarchy. If you're looking for a mid-sized company that does interesting work within the DoD and IC domains, but manages to retain the feel of a Bay Area startup, this is it.