USA Jobs is the portal for applying for federal government positions. Application process involves submission of various documents and online resume completion. Interview process involves panel of approx three managers. Questions are asked in round robin fashion. Unlike an interview at a private company, there is usually little follow up to questions. This is probably because in order to keep the interviews the same for all applicants, they can't do much "off-script" questioning. Once hired, there is a mandatory tax audit for all applicants as well as a background check. In addition, IRS special agents will interview your current and former neihbors to verify that you are who you say you are and that you are not involved in illegal or sketchy behaior. That step always freaks people out but I have never heard of it being a problem. Most are like, yeah, I think I have seen that guy mowing his lawn...