I submitted my resume online through usajobs.gov. It took several months (I think 5) but the hiring manager eventually called me. We had a very informal and casual phone interview and she said that the secretary would call to set up an interview. We set the interview for 2 weeks away and they paid to fly me from Savannah, GA to DC for that interview. The interview was actually a series of interviews and lasted from about 7:30 am until 4:00 pm with a lunch hour in there. Everyone was very nice and spent the majority of our interview time talking about life at the bureau. Most questions were about classes I had taken and programming experience. I got a phone call with my offer about 2 weeks later.

All interviews were through Microsoft teams video conferencing. This was my timeline: I applied in May, got my initial interview a month later, then had the main interview a week later. The main interview was an all-day thing where I spoke with 6 divisions each with an opening. The interviews were equal parts informational, behavioral, and simple technical questioning. I received an offer a month or so later, and I got to choose between a few different divisions. My start date was in September, about 4 months after I originally applied.