Senior Staff

Howard L. Zimmerman, AIA
Founder and Principal

Stephanie Bush, RA
Executive Director, Operations

Donna Singleton
Executive Director, Finance

Jon Colatrella, PE
Executive Director, MEP/FP Group

Joe Nevins
Director

Edward W. Pon, AIA
Director, Healthcare Projects

Carolyn Caste, RA
Director, Façade Compliance

Ilya Shtulberg, PE
Senior Structural Engineer

Igor Litwinowicz
Senior Project Manager

Anthony Malara, RA
Senior Project Manager

Joan Berkowitz, FAPT
Senior Project Manager / Preservationist

John Favazzo, RA
Senior Project Manager

Andrew Halpin
Senior Project Manager

Jon Buono, RA
Senior Project Manager

Larry Joseph
Senior Project Manager

Leslie Berman
Senior Project Manager

Stephanie Dillon
Senior Project Manager