Garisons has been the Defense Ministry's state secretary since 2015. He did not specify his reasons for resigning but did say he was open to new job offers.
Looking back at his eight years spent at the Defense Ministry, Garisons said "Although a lot has been achieved in terms of internal reforms to make processes smoother and more transparent, there is still plenty to do to make the reforms irreversible."
He joined the Ministry of Defense from the Ministry of Foreign Affairs, where he served as the Director of the Security Policy Department dealing with arms control issues, Russia and CIS, and was posted as the First Secretary at the Embassy of Latvia in Norway.
In 1996 he received a Master's degree in History from the University of Latvia, and in 2014 he earned his Master's degree in Strategic Studies from the U.S. Army War College.