Lieutenant Colonel McMenamin graduated from the United States Naval Academy in May 2007 with a B.S. in Economics. Upon graduation he attended The Basic School in July 2007 and later the Infantry Officers Course.
In April 2008, Lieutenant Colonel McMenamin reported to 3rd Battalion, 8th Marines in Camp Lejeune, NC and was assigned as 2nd Platoon Commander, India Company. In this role he deployed in support of Operation ENDURING FREEDOM (OEF), conducting combat operations in Farah and Helmand Province. Upon returning from deployment, Lieutenant Colonel McMenamin was assigned the billet of Company Executive Officer, Kilo Company, Battalion Landing Team (BLT) 3/8. Deploying with the 26th Marine Expeditionary Unit (MEU) in August 2010, Lieutenant Colonel McMenamin planned four bi-lateral training exercises and served as a Ground Combat Element leader planner. In December 2010, Lieutenant Colonel McMenamin and BLT 3/8 were deployed to the Upper Gereshk Valley, Afghanistan in support of OEF.
Upon returning from deployment in May 2011, Lieutenant Colonel McMenamin executed orders to 2d Reconnaissance Battalion. While there he served as a Platoon Commander and deployed in support of OEF in May 2012. Upon returning from deployment, Lieutenant Colonel McMenamin served as the S-3A and later as the Operations Officer. During this time, he oversaw the training and execution of the first Crisis Response Ground Combat Element. He later served as the Force Reconnaissance Company Executive Officer and aiding in the building and training of the first East Coast Force Recon Detachment in support of MEU deployments.
In August 2014, Lieutenant Colonel McMenamin executed orders to 2d Battalion, 6th Marines and assumed command of Fox Company. While in Command, Fox Company executed a deployment on the 26th MEU. Deploying on the USS Arlington in October 2015, Lieutenant Colonel McMenamin oversaw the execution of four bilateral training exercises in both 5th and 6th Fleet areas of responsibility.
In July 2016, Lieutenant Colonel McMenamin reported to the U.S. Naval Academy and taught in the Leadership, Ethics and Law Department. He was a senior core instructor for NL310: Leadership Theory and Application, a program manager for multiple Experimental Leadership Development programs along with being a Marine Mentor and OIC for USMC summer training.
From June 2019 to June 2022, Lieutenant Colonel McMenamin served as the Commanding Officer of Recruiting Station Baltimore and oversaw the Officer and Enlisted recruitment for parts of Maryland, Delaware, Pennsylvania, and the District of Columbia.
In June 2022 Lieutenant Colonel McMenamin reported to 2d Battalion, 8th Marines and served as the Executive Officer until June 2023.
From July 2023 to July 2024, Lieutenant Colonel McMenamin served as the Gulf Region Chief Engagement Officer, N-5 at NAVCENT. While stationed in Bahrain, he planned and coordinated engagements in support of the Gaza Conflict and maritime security in the Red Sea.
Lieutenant Colonel McMenamin is a graduate of Survival, Evasion, Resistance and Escape School, Basic Airborne Course, Expeditionary Warfare School, Command and Staff with Distinction and holds a Master of Arts in Leadership Studies from Marshall University.
Lieutenant Colonel McMenamin's personal awards include the Bronze Star Medal with Combat distinguishing device, the Purple Heart Medal, the Meritorious Service Medal with gold star, the Navy and Marine Corps Commendation Medal with four gold stars, the Navy and Marine Corps Achievement Medal, the Combat Action Ribbon, and various other campaign and service awards.