… residential and small commercial systems. She has also worked as a mechanical designer and sustainability analyst with the MEP Engineering firm Mazzetti. Sydney holds a BS in … residential and small commercial systems. She has also worked as a mechanical designer and sustainability analyst with the MEP Engineering firm Mazzetti. Sydney holds a BS in … residential and small commercial systems. She has also worked as a mechanical designer and sustainability analyst with the MEP Engineering firm Mazzetti. Sydney holds a BS in …