Briner was born and raised in Maryland. He attended University of North Texas and studied theater prior to finding voice-acting work. In 2015, he starred as the voice of Mikaela Hyakuya, one of the two main teenage orphans who turns into a vampire in the anime series Seraph of the End, which was released through Funimation's broadcast dub Service. He voiced Elam, a boy who serves Arslan's main party member Narsus, in The Heroic Legend of Arslan. He voiced main protagonist Qwenthur Barbotage in the mech-themed anime show Heavy Object. A reviewer wrote on Anime UK News that she was impressed with the quality of the dub and that Briner and fellow voice actor Micah Solusod "have a lot to do with how instantly likably the characters come across, which helps carry the whole show".

Briner has continued to voice lead and main characters in other anime shows. He voiced Alfonso San Valiante the crown Prince in the first Garo: The Animation series, which Robert Prentice of Three If By Space described the English cast "a great lineup", in particular highlighting Briner. In 2016, voiced Lance in the anime adaptation of Puzzle & Dragons X, and Nasu no Yoichi in the alternate history anime Drifters. In the prison comedy Nanbaka, his vocal performance was described as "more awestruck and childlike" than that of the original Japanese counterpart. Anne Laurenroth of Anime News Network found Briner's voicing of Kensuke Hanasaki in Trickster helped prevent his pre-backstory character from getting overly annoying. Briner has also been involved in the production side as the head Writer on the ADR script for Rio: Rainbow Gate!.

In 2017, he voiced lead characters Haruki Mishima in Convenience Store Boy Friends, Tazuna Takatsuki in Hand Shakers, and Eru in Knight's & Magic. He is also slated to voice lead character Justice "Seigi" Akatsuka in Taboo Tattoo.