Giller began writing at an early age, authoring his first science fiction novel at the age of sixteen. After attending Texas A&M University, garnering a journalism degree, he worked in the news industry. A spec script for Star Trek: The Next Generation allowed him a chance to pitch ideas for the show, but none of his stories made it to the script stage. In 2005, he was finally published, with Hammerjack being released by Spectra books. A sequel, Prodigal, followed eighteen months later at the end of 2006.