Arriaga, a 2015 graduate of Stanford University where he was a member of the men's volleyball team, served as an assistant for the Patriots' women's program last year after spending the 2015 season as technical coordinator at the University of Colorado.
"Eric brings great energy to our program. In his young career, he has already established himself as a well-rounded coach who has solid experiences," Pittenger said. "I am excited for our team to get on the court this spring for him to begin to share those qualities with our student-athletes."
In his time at George Mason, Arriaga helped the Patriots to their longest Atlantic-10 Conference winning streak since the program joined the league, and the program set a school record for single-match digs with 126.
Arriaga assisted with player development and training in all positions while he also contributed to the team's recruiting, marketing and scouting efforts.
"I am very excited to be at Loyola and work with Alija to help build this program into a Patriot League contender," Arriaga said. "I would like to thank Alija and the Loyola administration for this opportunity, and I look forward to getting started with the team."
After he graduated from Stanford with a Bachelor of Science in biology, Arriaga returned to his home state as the technical coordinator for the Colorado women's program. He helped the Buffaloes to a 19-13 overall record and their first-ever win over his alma mater. Arriaga assisted the Colorado coaching staff with opponent scouting, statistical analysis and video coordination.
A native of the Denver area, Arriaga joined the Stanford men's volleyball team as a walk-on outside hitter and defensive specialist in 2011-2012 . That year, he was named the team's Most Improved Player while helping it reach the Mountain Pacific Sports Federation title match and finish with a 22-7 overall record.
After an injury curtailed his playing career, he continued with the program as a student assistant coach from 2013-2015. In 2014, the team finished as the NCAA Division I Runners-Up.
He also has worked as a club coach for the Boulder Athletic Club in Colorado and NVVA Volleyball Club in Virginia.