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

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

Michael Cassidy
Senior Project Manager

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

Larry Joseph
Senior Project Manager

Leslie Berman, LEED AP®
Senior Project Manager

Stephanie Dillon, Assoc. AIA
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