Interview process as a reserve officer was relatively short. First step was a screening video call with the senior reservist from my military branch that was about 30 minutes long. That was followed by another video call with the deputy director of the portfolio and the portfolio exec/chief of staff, also 30 minutes. Both calls focused on general questions about my background, interest in applying to DIU, and what I could bring to the unit. After that, I was given an offer.