Gomez ran against then-Rep. Ed Markey (D-Mass.) in the special election to replace John Kerry, now secretary of State.
"We are truly honored to have Gabriel Gomez join the GOProud Board of Directors, GOProud Board of Directors Chairwoman Lisa De Pasquale said in a statement.
Prior to running for office Gomez, a former Navy SEAL, worked as an investment banker. In a statement Gomez said he was honored to join the organization.
"I'm looking forward to working with the rest of the GOProud board and staff, reaching out to young voters, conservative activists and lawmakers with our message of free markets, limited government and personal responsibility. I often said during my campaign that I did not support any type of discrimination and groups like GOProud are important, now more than ever, as we expand the conservative moment."
Gomez has indicated that he's considering running for office again, according to The Boston Globe.