The recruiter seemed to lack knowledge about the role and about the company. When I explained prior roles she kept asking me "But what did you do though" in a pretty snippy tone. I've interviewed many and been interviewed by many and, never experienced this. The vibe I got was she didn't understand the role she was interviewing me for - so my answers confused her. When I asked a couple specific questions about the company she gave me extremely vague/high-level answers with info I could have gotten from the website. Finally, I had applied via linkedin and she specifically asked me to go through the entire application process on their website which, I was happy to do. Two days later I realized she only asked me to go through that process so she could send me a form email - a thanks but no thanks letter. Unprofessional all the way around. Recruiters: you need to have a base level of the role you are interviewing for and certainly the company you work for.