I worked at Centers for Disease Control and Prevention full-time (More than a year)
Good pay and lots of learning opportunity.
Only there for 2 years as a contractor.
I applied online. I interviewed at Centers for Disease Control and Prevention.
Formal. Questions drawn from job posting. No funny business; no trick, stupid questions. All applicants are asked the exact same questions. Typically a three person panel. Turn around time for response was maybe 2 weeks if that.