[2] While at UNC Wilmington, Melvin played in 2013–2014 with the Vancouver Whitecaps FC U-23 side in the Premier Development League, starting a total of seven games.

[3] Melvin signed his first professional contract with Whitecaps FC 2 of the United Soccer League in February 2016.

[4] In the 2016 season, Melvin shared the net with fellow WFC 2 keepers Marco Carducci and Spencer Richey.

[13] On February 4, 2022, Melvin signed a one-year contract with an option for 2023 with Canadian Premier League side Atlético Ottawa.

[16] In January 2015, Melvin received his first call up to the Canadian men's national team for a pair of friendlies against Iceland.