Columbus & Over Group

Advisor Profiles

Amandine Sime

Video Producer & Multimedia Designer

Amandine Sime is a third-year student at Northeastern University pursuing a Bachelor of Science degree in Business Administration and Communication Studies, with a concentration in Marketing. She joined the COG team as a Video Producer and Multimedia Designer Co-op in January 2024.

Her interest in digital marketing and content creation stems from her passion for using creativity to tap into the minds of others, their emotions, and their decision making. She enjoys the art of creative storytelling, whether that be through writing, design, or videography. 

Born and raised in Fairfield County, Connecticut, she loves traveling with family, exercising, and going for walks outside of work.

Jeff Hamilton

Founder and Managing Principal


Joe Castro

Real Estate Advisor


Emma Kaloupek

Real Estate Advisor


Jamie Gaines

Real Estate Advisor


Lisa Ha

Real Estate Advisor


Jonathan Russell

Real Estate Advisor


Kerry D’Ambroise

Real Estate Advisor

978 821 2187

Katie Garger

Real Estate Advisor

‭+1 (518) 956-1821‬

Alice Markson

Real Estate Advisor


Is COG Right For You?

Interested in joining the COG team? At Columbus & Over, we value our agents just as much as we value our customers. Tell us why you would make a good addition to our team.