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.
https://youtu.be/3AEvEIYzMbU?si=S5NDh1874vsE72Kl?t=8m28s
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”
Here's his GDC postmortem presentation: https://www.youtube.com/watch?v=Z1Fx18cppZk
Building games today is a different beast, comparable to making a movie.