Captain Jayson Rimer was born in Altus, Oklahoma and later raised in Papillion, Nebraska where he graduated from Papillion La Vista South High School. He graduated from Iowa State University and was commissioned a Second Lieutenant in May 2013. After completing The Basic School in November 2014, he reported for duty to 3d Battalion, 8th Marines, 2d Marine Division in Camp Lejeune, North Carolina as the Battalion Adjutant and Legal Officer. In January 2015, he attended the Basic Manpower Officer Course in Camp Johnson, North Carolina.
In March 2015, he returned for duty with 3d Battalion, 8th Marines, 2d Marine Division in Camp Lejeune, North Carolina to serve as Battalion Adjutant and Legal Officer. In preparation for deployment, he participated in Integrated Training Exercise 3-15 to 29 Palms, California. During this exercise, he was promoted to First Lieutenant. In August 2015, the Battalion deployed as the Ground Combat Element in support of Special Purpose Marine Air Ground Task Force-Crisis Response-Africa (SPMAGTF-CR-AF) and as the Command Element of Black Sea Rotational Force 15.2 for six months. During the deployment, his section verified, validated, and tracked accountability of approximately 1,261 personnel, including a newly established Combined Arms Company, for the entire Ground Combat Element of SPMAGTF-CR-AF, spanning a total of 15 countries, which included three continents.
Following his return from deployment in February 2016, Captain Rimer participated in Mountain Training Exercise 5-16 to Bridgeport, California. In March 2016, Captain Rimer attended Manpower Officer Course in Camp Johnson, North Carolina. In February 2017, he deployed to Okinawa, Japan in support of the Unit Deployment Program 17.1 rotation for six months. During the deployment, Captain Rimer directly participated in the FUJI VIPER 17-4 Exercise, Camp Fuji, Japan and the Korean Marine Exchange Program (KMEP) 17-11 Exercise, South Korea.
In September 2017, Captain Rimer transferred to 2d Reconnaissance Battalion, 2d Marine Division as the Battalion Adjutant and Manpower Officer. While with 2d Reconnaissance Battalion, he was promoted to the rank of Captain and attended the US Army Basic Airborne School at Fort Benning, Georgia. During this time, Captain Rimer was selected for his current assignment as Marine Officer Instructor at the Naval Reserve Officers Training Corps Unit, University of Oklahoma and reported in June 2018. He is responsible for preparing Marine Option Midshipmen for Officer Candidate School and serving as the Marine Corps representative to the unit.
Captain Rimer graduated with Magna Cum Laude from Iowa State University (2013) with a Bachelor of Arts in Communication Studies, with a minor in Speech Communications and Military Studies. His personal decorations include the Navy and Marine Corps Commendation Medal and the Navy and Marine Corps Achievement Medal.