Brendan Robinson started his career in the late 2000s. Initially, he started acting in short films. In 2010, he made his film debut in The River Why. He later had guest roles in such television shows as Cold Case, Miss Behave, Good Luck Charlie, and How I Met Your Mother. At the same time, he had roles in such movies as Rid of Me, Feels So Good, and Another Day in Paradise. Between 2010 and 2017, he became known for his role as Lucas Gottesman in Pretty Little Liars. After this, Robinson starred in the television movies Beerfest: Thirst for Victory and A Christmas Switch.