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Our Team

O&S Associates is led by V.P. Samy, the Founder and Principal of O&S Associates, who brings over 35 years’ experience of engineering and directs a professional staff of over 70 that includes more than 28 registered professional engineers and architects. O&S has five principals within the firm, all of whom are involved in nearly every project at some level.

One key attribute that separates O&S from a typical engineering firm is the range and diversity of our experience. Our team of seasoned professionals excels in project leadership, teamwork, dedication, and cooperation, which provides our clients with superior designs and exceptional service. This expertise and our commitment to quality provide clients with the latest technologies and advances in materials and products.

V.P. Samy, PE


William T. Payne, PE

 Vice President

Suchi Jayasena, PE


Tim Webb, RA


Nabeel Raazi

 Director, Ohio Region

Andrew Wilson, PE

 Director, Pennsylvania and Delaware Valley Region

Duane Ellis, PE

 Director, D.C. Metro Region

Tariq Wasti, RA, NCARB

 Director of Architecture

Jason Borden, PE

 Director, Florida and Southeast Region

Peter Catapano, PE, CEM

 Director, MEP Services

George Azarko, PE

 Director, Construction Services

Alex Mathew

 Senior Material Conservation Specialist

Michael Chung, RA

 Project Architect

Thet Paw Tun, RA

 Project Architect

John Deng, PE

 Structural Engineer

Nancy Wang, PE

 Senior Civil Engineer

Mark Chisvette, PE

 Civil Engineer

Hemendra Bhattacharya, PE

 Senior Mechanical Engineer

Raj Sookhu

 Mechanical Design Engineer

Tamara Subasic

 Mechanical Engineer

Edwin Angeles

 Senior Electrical Engineer

Alan Lopez, LEED AP BD+C

 Electrical Engineer

Kevin Ngan, PE

 Electrical Engineer

Babington Anyaele

 Construction Manager/Project Officer

Edward McLean

 Senior Construction Inspector

Maulik Nayee

 Electrical Design Engineer

Naresh Bhagat

 Construction Manager/Project Officer

Alfred Eatman, RA

 Project Manager

Alok Anil, RA AIA

 Senior Project Architect

Brent Caruso, EIT

 Project Engineer

David Lubkin, PE

 Project Manager

Jose Vazquez, LEED AP

 Senior Project Manager

Robert Bender

 Senior Project Manager

David Harrison, PE

 Project Manager

Dider Monteiro

 Project Manager

Eric Muhl

 Senior Parking Specialist

Kendall Eberhardt, PE

 Structural Engineer

Micaela McLean-Johnson

 Senior Project Manager

Phillip Haley, PE

 Project Engineer

Robert Mahan, PE

 Project Manager

Sean Leary

 Project Engineer

Sunny Thohan

 Project Manager

Tim Regetta

 Project Engineer

Victoria Baren

 CADD Operator

Brian Reilly

 Project Engineer

Lewis Rion

 Project Manager

Jonathan Larrota


Jarvis Ravichandran

 Assistant Project Manager

Swaptik Chowdhury

 Project Engineer

Rod L. Fernandez, PM

 Project Manager

Pranati Goyal

 Project Engineer

John Montemarano, PE

 Project Engineer

Bridget Frasca

 Project Engineer

Inamullah Khan

 Project Engineer

Melinda Taveras

 Contract Administrator/Administrative Assistant

Scott Zimmerman

 Proposal Developer

Soo Kim

 Marketing Associate

Marilyn Fiore

 Administrative Assistant

Linda Czarrunchick

 Director of Marketing

Stephanie Villeda


Veni Perumalsamy

 Office Manager