Jayden Nelson came through the Toronto FC Academy program when he entered the youth system at the age of 14. He worked his way through the youth system all the way to the senior team where he signed an MLS home-grown contract in 2020. The 19-year-old winger made his debut for Toronto FC during the MLS is back tournament, where he featured against New York City FC.

In 2023, Jayden made the move to Norway and signed with Norwegian giants Rosenborg BK.