Frontier Developments Automation Engineer interview questions

Didn't even make it to the interview stage, but just wanted to highlight the unprofessionalism of this company, as a warning to others that may apply. I applied to their Automation Engineer role and shortly after was given an email confirming interview details, with a date and time. I was also given an NDA which I was to sign and return to the company before the interview. I signed and returned the NDA on the same day it was given and only one hour or so after sending on the signed NDA, they respond and tell me the role had been filled. Complete waste of time.