| Founder- The Cadogan Firm
|Principal – Law Offices of Arnold M. Weiner 2007-2010|
| Partner – Brown & Sheehan
Of Counsel - Brown, Diffenderfer & Kearney, 2000-2003
|Staff Counsel - The Hartford Insurance Co. 1996-2000|
|Associate - Hassan, Hassan & Tuchman, PA 1988-1996|
| Associate - Alexander & Cleaver, PA
He is an experienced litigator, having managed hundreds of civil litigation matters in both District and Circuit Courts throughout the State of Maryland. He represents clients in the area of criminal, domestic, personal injury, insurance claims, Workmen’s Compensation and wrongful death claims.
Since 1990, Mr. Cadogan has served as former-Mayor and current-Governor Martin O'Malley's Campaign Treasurer. As such, he has significant experience in the area of the State of Maryland Fair Campaign Financing Act. Mr. Cadogan has also served on the finance committee for then Baltimore City Council President and current Mayor Stephanie Rawlings-Blake.