Braga previously worked both as an executive producer and as one of the top writers for the Star Trek franchise, including the following series: Star Trek: The Next Generation, Star Trek: Voyager, and Star Trek: Enterprise (which he co-created). He also co-wrote the screenplay for the films Star Trek: Generations (1994) and Star Trek: First Contact (1996). He also contributed an early story draft for Mission: Impossible II.
Braga has also worked with 24 writing partner and fellow executive producer Manny Coto on the third and fourth seasons of Star Trek: Enterprise.
In 2011, Braga worked as executive producer of the show Terra Nova, along with Jon Cassar. David Fury was also featured as a writer on the show, and Mido Hamada had a supporting role on the show.