Harris participated in numerous international competitions representing his home country, including the inaugural 2010 Summer Youth Olympics in Singapore, FINA World Long Course Championships, FINA World Short Course Championships, and most notably the 2012 Summer Olympics in London,[2] and the 2016 Summer Olympics in Rio.

[citation needed] 2013 Received the Oceania Australia Foundation Scholarship Archived 2022-08-10 at the Wayback Machine, to Iowa Lakes College 2014 - 2015 Iowa Lakes Community College (NJCAA) Team Captain 2015 NJCAA All American Trained with Kwajalein Swim Team until the age of 15.

2010-2012 training location: Spire Institute, Michael Johnson Performance Center, Geneva, Ohio, under Coach: Jim Bocci 2013-2015 training location: Iowa Lakes College, Men's Swimming & Diving, Estherville, Iowa, 2015-2016 training location: The Bolles School - Jacksonville, Florida, under Coach: Jon Sakovich 2016-2018 Maryville University, Maryville University Athletics, St. Louis, MO Giordan was raised on Ebeye Island, the most populous island of Kwajalein Atoll in the Marshall Islands, where his mother, Mary Harris, was born.

His mom regularly took him to the lagoon as a baby, where he spent countless hours swimming.

He started swim team at the age of six and was the first swimmer from Ebeye to be a part of Kwajalein Swim Team on the neighboring US military base which houses the only pool in the Marshall Islands.