The interview stages were "interview screening questions (via email)" then the choice of "code challenge" type (live session or take-home). First, I sent an email to apply for the position, and the process begins from there.
I've only proceeded up to the "code challenge" and received constructive feedback via email, with the decision to not proceed further (thus, there was no code challenge debrief stage).
Note, the (take-home) code challenge was simple and fun, better than most out there. However, the feedback was they want "code comments" and better emphasis on unit testing, in the overall code contributed to the challenge - keep in mind of these points, as they do not read markdown files and provide a code challenge debrief interview.
In conclusion, be sure to ask about the interview process first and questions about the code challenge itself (for example, ask if they'd prefer written code comments). Lastly, the process were all email comms, never met or seen Ferocia staff on video or in-person.