Before joining "Heated Rivalry," Walsh builds a long career in film and television, becoming known for roles such as Dr. Sean McNamara on "Nip/Tuck" and Sam Lane on "Superman & Lois." He appears in numerous series and features over several decades, giving him extensive experience with ensemble casts and dramatic storytelling prior to his work on the hockey romance drama.

Walsh’s screen work also includes roles on series such as "Blue Bloods" and "Unforgettable," where he portrays characters that contribute to both procedural and family‑drama genres. These roles deepen his familiarity with varied television production styles and character arcs before his recurring part on the series.

In addition to his television career, Walsh appears in feature films and continues to work with directors and actors across different genres, expanding his on‑camera experience beyond serialized storytelling. His film work spans drama, action, and ensemble productions, contributing to a broad acting background ahead of his role on "Heated Rivalry."

Outside of acting on the series, Walsh continues to pursue work in television and film, participates in media appearances related to his projects, and remains active in industry engagements that connect with his long professional career.