Our People

Solving complexity is our standard.

Whether making a seemingly impossible design a reality or solving a performance problem that has proven elusive, SGH brings clarity to complexity. Our teams deliver customized and reliable solutions for our client partners—advancing the meaning of what’s possible.

Our diverse staff—engineers, architects, scientists, and many other professionals—is led by seasoned principals, project managers, and thought leaders who seek to advance our industry while fostering our long-term client relationships.

Meet our leadership team.

James Parker

Chief Executive Officer

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Niklas Vigener

Chief Operating Officer

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Martin Mullins

Chief Financial Officer

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Vince Cammalleri

Head of Business Administration

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Emily Hopps

Executive Principal, Building Technology, East

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Amy Hackney

Executive Principal, Building Technology, West

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William Bruin

Executive Principal, Structural Engineering, West

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Aaron Lewis

Executive Principal, Structural Engineering, East

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Jesse Beaver

Executive Principal, Engineering Mechanics and Infrastructure

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Meet our divisional leaders.

Benjamin Kosbab

Managing Principal, Engineering Mechanics and Infrastructure, Atlanta

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Joshua Kivela

Managing Principal, Building Technology, Waltham

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Susan Knack-Brown

Managing Principal, Building Technology, Boston

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Greggrey Cohen

Managing Principal, Structural Repair and Rehabilitation, Boston

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John Thomsen

Managing Principal, New Structural Design, Boston

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Scott DiFiore

Managing Principal, Heavy Civil, Boston

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Robert MacNeill

Managing Principal, Structural Mechanics and Materials

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Peter Nardini

Managing Principal, Water and Industrial Infrastructure

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Peter Babaian

Managing Principal, Building Technology, Chicago

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Christopher Hewitt

Managing Principal, Structural Engineering, Chicago

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Jeffrey Kerr

Managing Principal, Building Technology, Washington, DC

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Emily Appelbaum

Managing Principal, Structural Engineering, Washington, DC

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Nick Floyd

Managing Principal, Building Technology, Houston

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Kevin O'Connell

Managing Principal, Structural Engineering, Southern California

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Sean O'Brien

Managing Principal, Building Technology, New York

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Nathaniel Smith

Managing Principal, Structural Engineering, New York

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Craig Allender

Managing Principal, Building Technology, San Francisco Bay Area

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Rune Iversen

Managing Principal, Structural Engineering, San Francisco Bay Area

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Frederic Grant

Managing Principal, Engineering Mechanics and Infrastructure, Southern California

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David Jacoby

Managing Principal, Engineering Mechanics and Infrastructure, Fire Engineering

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Meet our operational leaders.

Jenifer Brannen

General Counsel, VP

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Alissa Brownson

Director of Human Resources

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Megan DeGuglielmo

Director of Talent Development

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Jeremy Kamm

Assistant Controller

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Benjamin Kusa

Director of Information Technology

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Norman Perkins

Director of Applied Science & Research

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Melissa Purpura

Director of Administrative Services

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Nicole Sparks

VP, Marketing

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