Mary Gaffney

President & Owner

Mary oversees financial, sales, legal, and operational activities. Her background and experience includes project management ($25K to $50 Million in size), construction management, contract management, and construction technology. She has over 38 years of project management experience. Mary has a Master of Business Administration degree and a Bachelor’s of Science, Management Information Systems from Widener University. She is on the board of the National Association of Women in Construction - Philadelphia Chapter, and on the Board of Governors for the Mechanical Contractors Association of Eastern PA. Mary is OSHA 30 Certified.

Other Team Members

Drew Silich

Vice President of Operations

Sean Gaffney

Vice President of Construction

Michael Gaffney

Senior Vice President

5101 Birney Highway
Aston, PA 19014

Contact Us

email info@gemmsi.com

office (610) 361-9667

fax (610) 361-9677