It was 4 interviews
The guy that interviewed me was pleasant. The guys in the panel were all quite decent people, all devs. First was a phone interview which went well, then was a coding challenge to do at home, which I completed. Then there was an interview with the Product Development Manager and a senior dev via Zoom - mostly PHP tech questions. Then finally a panel interview via Zoom - involved Perl, and PHP, and Questions about my CV.
I didn't get an offer but they clearly explained why, which I appreciated.