Before joining "The Nanny," Shaughnessy builds an extensive career in theater, television, and film. He performs in stage productions across the United Kingdom and the United States, including both classical and contemporary plays. His theater work includes performances in Shakespearean productions, musicals, and ensemble pieces, providing him with broad stage experience.

In addition to theater, Shaughnessy appears in television and film projects, including guest and recurring roles on dramas, comedies, and miniseries. He works on projects spanning multiple genres and collaborates with a variety of directors and production teams, giving him experience with different filming styles and ensemble dynamics prior to "The Nanny."

Outside of acting, Shaughnessy participates in stage and performance-related projects, including workshops, readings, and theater collaborations. He also engages in educational initiatives and maintains involvement with the performing arts community while working in television.