Source[3] After her college career, Harmon first signed with Pool Comense for the 2009–10 season of Italy's Serie A1.

[5] After a season abroad in Australia and New Zealand, Harmon returned to Italy after signing with Le Mura Lucca.

Playing alongside the likes of Suzy Batkovic, Micaela Cocks and Cayla George, Harmon helped lead the Fire to their first WNBL championship.

After taking home the silver, Harmon and the Tall Ferns would then go on to participate in the Olympic Qualifying Tournament in Turkey.

In 2016, Harmon would once again join the Tall Ferns and compete in the Olympic Qualifying Tournament, with this edition in France.