Ronald D. Moore was born on July 5, 1964 in California. He studied government at Cornell University, but never graduated. He began writing for the television show Star Trek: The Next Generation (TNG) on spec in 1988. In 1989, he was put on staff as a script editor, and by the end of the series he was the show's producer. While on staff with TNG, he frequently co-wrote with Brannon Braga (with whom he also wrote the screenplay for Star Trek: Generations and Star Trek: First Contact). After TNG was cancelled in 1994, Moore joined the production staff of Star Trek: Deep Space Nine (DS9), then in its third season.
After DS9 was cancelled in 1999, Moore, who was by that time the show's executive producer, joined the production staff of Star Trek: Voyager, where Braga was executive producer. Moore left the show after working on only three episodes. After leaving the Star Trek franchise, Moore joined the television show Roswell as a co-executive producer (with Jason Katims) and staff writer for the show's second season. After Roswell was cancelled in 2002, Moore was offered the opportunity to develop a four-hour mini-series based on the old television show Battlestar Galactica. He worked with David Eick to develop the mini-series' story and script. At the same time, Moore was offered the position of executive producer for the show Carnivale (which aired on HBO). Moore worked on the first season of Carnivale while Eick ran the day-to-day production of the Battlestar Galactica (BSG) mini-series. After the Sci-Fi channel ordered the first series of BSG, Moore left the Carnivale to work full time on Battlestar Galactica as the show's executive producer. BSG aired in four seasons between 2004 and 2009. He was nominated for an Emmy for writing the episodes "Occupation" and "Precipice," which aired together as the beginning of the show's third season.
After Battlestar Galactica ended in 2009, Eick and Moore collaborated again on the Galactica-prequel Caprica. Caprica, which aired on television first in January 2010, was cancelled after one season. He also developed a pilot for Fox called Virtuality. The pilot aired in June 2009, but was not picked up.