Pretty simple, just share your experience. It was more of a conversation rather than an interview. Most pass a 15 panel drug test, always ask questions during ANY interview and just sell your experience.
I applied online. I interviewed at Delphinus Engineering (Norfolk, VA) in Oct 2020
Interview
Thru zoom meeting , thirty minute process went over knowledge, supervision of personnel, salary requirements, shift work and work conditions. Scenarios of what if’s and how I would handle different circumstances
I applied through a recruiter. The process took 3 weeks. I interviewed at Delphinus Engineering (Philadelphia, PA)
Interview
They worked though Aerotek who did a 6 month contract to hire. Had call from recruiter then 1 interview on site with the government and Delphinus manager. Not too many technical questions as this was a Junior position and they were not software engineers.