Executive Team

David Rivard

Chief Executive Officer

David began with our Agency in 2008. Prior to that, he was Executive Director of the Sudbury/Manitoulin CAS and the Family Counselling Centre of Sault Ste. Marie and District. He possesses a Masters of Social Work from Wilfrid Laurier University and an Honours Bachelor of Social Work Degree from Laurentian University.

David has also been an Adjunct Professor in Social Welfare and Social Work at a number of Canadian and American Universities over a period of twenty years, teaching courses on social policy; child abuse and neglect; and Canadian/International Social Welfare.

David has authored/co-authored a number of publications on healthy personal and organizational growth and has also conducted research in the areas of poverty and divorce.


Mahesh Prajapat

Chief Operating Officer

Mahesh Prajapat has over 25 years of combined experience in the areas of Social Work and practice and leadership. Prior to joining CAS of Toronto as the Chief Operating Officer, he was the Director of Service at the Children's Aid Society in Peel. He possess a Bachelor of Social Work Degree from Lakehead University, and a Masters of Social Work from University of Toronto, and completed Leadership designations with Schulich School of Business, leading organizational change initiatives with Excellence Canada, and was a Clinical Panel Member with the Office of the Children's Lawyer. Mahesh is a strong advocate and champion of Diversity, Equity and Inclusion; organizational excellence and strategic thinking and improvement, strongly committed to building partnerships with the community to ensure families are strengthened and children remain safe, healthy and strong.

Mohamed Shafeek

Chief Financial Officer

Mohamed joined CAST in September 2012 as Chief Financial Officer.  He was previously Vice-President of Finance & Operations at the Toronto Board of Trade, Chief Financial Officer at South West Community Care Access Centre and Vice-President of Finance at Super Electric Corporation.  Prior to this Mohamed was with Volvo Cars of Canada as Vice-President of Finance.  He also held senior financial positions at Volvo Cars of North America, Schindler Elevator Corp and Colgate-Palmolive Canada.  Mohamed is a strategic leader that has a proven track record in building strong relationship with stakeholders even during large scale transformations.

Mohamed is a Certified General Accountant and holds an MBA from Laurentian University.  He volunteers at Seneca College as a member of the accounting and finance advisory committee and has taught finance courses at various colleges in the Toronto area.


Marnie Lynn

Chief Human Resources Officer