Willetton man Christian Tachev was employed by a bikie-linked drug ring as a courier when he was arrested this month by the AFP.
The court heard Tachev was sent GPS coordinates from his boss that told him where to pick up and drop off drugs, including burying them in bushland around suburban Perth.
AFP officers located drugs buried by Tachev on two separate occasions in 2021 in bushland in Edgewater and Queens Park.
The total haul seized had a street value of about $15 million.
The former Curtin University student, then aged 24, was arrested near his northern suburbs business where police found more than $17,000 cash, a hand shovel and dirty gardening gloves inside his car.
AFP Senior Constable Josh Gilmour said 15kg of meth could potentially have been sold to 150,000 people in street deals.
“People who move cash and drugs for criminal syndicates play a vital role in helping other members to profit from this damaging trade,” he said.
“The AFP and our partners are working tirelessly to stop drugs from reaching our community and arresting those involved in the distribution.”