Senior Staff

Howard L. Zimmerman, FAIA
Founder and Principal

Stephanie Bush, RA, LEED AP®
Executive Director, Operations

Donna Singleton
Executive Director, Finance

Jon Colatrella, PE, CEM, CBCP
Executive Director, MEP/FP Group

Andrew E. Zimmerman, AIA
Executive Director

Joe Nevins
Director

Edward W. Pon, AIA
Director, Healthcare Projects

Carolyn Caste, RA
Director, Façade Compliance

Mark Edmunds
Director, Special Inspections & Technology

Jane Felsen Gertler, FSMPS
Director, Business Development

Allie F. Brush
Director of Client Relations

Ilya Shtulberg, PE
Senior Structural Engineer

Igor Litwinowicz
Senior Project Manager

Anthony Malara, RA, LEED AP®
Senior Project Manager

Robert M. Vella
Senior Project Manager

Joan Berkowitz, FAPT
Senior Project Manager / Senior Preservationist

John Favazzo, RA, LEED AP®
Senior Project Manager

Andrew Halpin
Senior Project Manager

Alexandra Graham
Senior Project Manager

Jon Buono, AIA, NCARB, LEED AP®
Senior Project Manager

Larry Joseph
Senior Project Manager

Leslie Berman, LEED AP®
Senior Project Manager

Douglas Michael
Senior Project Manager

Jeanmaire Dani, LEED AP®
Senior Project Manager

Kevin Saumell, RA
Senior Project Manager

Arie Isaacs
Senior Zoning & Code Manager