The midfielder played for both Bray Wanderers and Bohemians at under-19 level before joining Shamrock Rovers and going out on loan back to the Carlisle Grounds.
When his contract at Tallaght ended, Higgins moved quickly to bring the midfielder to Foyleside as he puts the finishing touches to his 2022 squad.
“Brandon is a player I’ve admired since he burst onto the scene at Shamrock Rovers a few years ago,” said the manager.
“He is a very gifted footballer with huge potential.
“At only 21 years of age it will be exciting to see how he develops in the coming years at Derry City.”
Kavanagh has penned a three-year deal with the Candystripes and will further strengthen the manager’s options over the coming seasons.