First Sergeant Ruiz is a native of El Paso, Texas. He enlisted in the United States Marine Corps in September 2011 and attended Recruit Training at Marine Corps Recruit Depot San Diego, California. Upon completion of recruit training, Private Ruiz attended Marine Combat Training (MCT) at Camp Pendleton, California. Following MCT, he attended Military Occupational Specialty (MOS) training at Supply School, Camp Johnson, North Carolina, where he earned the MOS 3051, Warehouse Clerk.
In March 2012, Private Ruiz was promoted to Private First Class and received orders to Marine Aircraft Group 16 (MAG-16), 3rd Marine Aircraft Wing, Marine Corps Air Station Miramar, California. Upon reporting to his first duty station, he was assigned to the Marine Corps Property Platoon as a Personal Effects Clerk. In November 2012, he was promoted to Lance Corporal.
In May 2013, Lance Corporal Ruiz received orders to Redeployment and Retrograde in support of Reset and Reconstitution Operations Group (R4OG) at Camp Leatherneck, Helmand Province, Afghanistan, where he served as a Personal Effects Clerk. In September 2013, he was promoted to Corporal and returned to his parent command, MAG-16, in December 2013.
Upon his return, Corporal Ruiz served as the Platoon Sergeant and was meritoriously promoted to Sergeant in February 2015. In September 2015, he received orders to the Marine Corps Security Forces Regiment, where he served as the Noncommissioned Officer in Charge (NCOIC) for Personal Effects, Shipping, and Receiving. During this assignment, he was meritoriously promoted to Staff Sergeant and attended the Martial Arts Instructor Trainer Course in Quantico, Virginia. Upon completing the course, he received orders to Marine Forces Command in Norfolk, Virginia, where he served as the Warehouse Chief.
In October 2018, Staff Sergeant Ruiz attended Drill Instructor School and was assigned to 1st Recruit Training Battalion, Charlie Company, where he served as a Drill Instructor and Senior Drill Instructor. In October 2020, he was reassigned to Bravo Company, serving as a Chief Drill Instructor for two training cycles.
In May 2021, Staff Sergeant Ruiz was reassigned to Support Battalion, Receiving Company, where he served as a Chief Drill Instructor until January 2022. In October 2021, he was promoted to Gunnery Sergeant and received orders to 2nd Supply Battalion, Supply Company, where he served as the Shipping and Receiving SNCOIC and Company Gunnery Sergeant.
In February 2024, Gunnery Sergeant Ruiz received orders to the Staff Noncommissioned Officer Academy (SNCOA), Camp Lejeune, where he served as a Faculty Advisor at the Career School. He was promoted to First Sergeant in April of 2025.
That same month, he assumed his current assignment as the Inspector-Instructor Unit Senior Enlisted Leader, Battery D, 2nd Battalion 14th Marines.
His personal awards include the Navy and Marine Corps Commendation Medal.