Goldeneye was developed by Rare, who had been in existence for 10 years by the time Goldeneye was released. I'd be really surprised if they had landed the rights to a big IP and then turned a bunch of newbies loose on it.
This is video is a wider retrospective about the game that I think is worth watching, but I linked to a clip in it from a GDC talk given by the games director. Where he states himself that only he and one other goldeneye 007 team member “had ever made a game before”
He's correct. Martin Hollis was game director and had worked on one game before, cant remember if he was the only one that had worked on a game before or if they had one more, the rest of the team had never worked on a game. He thought it was one of their strengths as they came up with stuff that seasoned developers would never have tried.
I feel the 90s is a missed opportunity for someone like myself. If I was just a few years older... I could have been one of those "programmers" given opportunities.
Building games today is a different beast, comparable to making a movie.