He was last seen on July 10 as he was leaving his Mowbray house for work, but he missed his shift and was reported missing the next day.
Police said a trail bike rider found Mr Hamlyn’s motorcycle while riding in the Fingal area around 10:15am on Saturday.
A search of the area located a body nearby.
The person is yet to be formally identified. Police said there were no suspicious circumstances surrounding the death.