Glenn BellGlenn R. Bell

Senior Principal and Chief Executive Officer

Glenn joined SGH in 1975 as a graduate engineer and has continuously advanced in his career to become CEO in 1995. Before he attained his current position he was responsible for major works in all areas of our practice: structural engineering, building technology, and engineering mechanics and infrastructure. Under Glenn’s leadership as CEO SGH has grown substantially both in size and service offerings.

Joseph ZonaJoseph J. Zona

Senior Principal and Head of Structural Engineering and Structural Mechanics

Joe joined SGH in 1976. He oversees projects involving design of new buildings, additions and renovations, investigation of structural adequacy, and failure analysis. As Head of our structural engineering and structural mechanics group, Joe is responsible for the strategic development and operations of all of our work in structural engineering, mechanics, and infrastructure.

Niklas VigenerNiklas W. Vigener

Senior Principal and Head of Building Technology and Eastern Region

Nik joined SGH in 1995 and works in design consulting as well as building rehabilitation. He has led some of SGH's most notable building technology and historic preservation projects, and also collaborates with architects and contractors to assist with the design and construction of building envelope systems. Nik is also a lecturer in the Department of Civil Engineering at Johns Hopkins University.

Ron HamburgerRonald O. Hamburger

Senior Principal and Head of Structural Engineering, Western Region

Ron joined SGH in 2002 with more than thirty years of experience in civil and structural engineering; building design, investigation, and code development; and research. He is an internationally recognized expert in earthquake-resistant design and structural performance evaluation and is widely recognized in the structural engineering community for his leadership in performance-based design.

Paul KelleyPaul L. Kelley

Senior Principal and Head of Structural Engineering, Eastern Region

Paul joined SGH in 1979. Paul’s expertise encompasses building structural design, structural failure investigations, waterproofing, concrete technology, construction engineering, tunneling, cost estimating and scheduling, and automation of building condition surveys. He has offered his expert opinions in mediations, depositions, arbitrations, and trials to help resolve many construction-related disputes.

Kenneth KleinKenneth A. Klein

Senior Principal and Head of Building Technology, Western Region

Ken joined SGH in 1985. He designs and investigates waterproofing on a wide-range of structures from residential and high-rise building to significant historic structures. His work addresses issues related to the integrity of curtain walls, roofs, plaza deck, and below-grade systems. Mr. Klein consults with architects, contractors, and building owners to analyze and repair water intrusion problems and construction defects.

Ron MayvilleRonald A. Mayville

Senior Principal and Head of Engineering Mechanics and Infrastructure

Ron joined SGH in 2009. He serves as the National Head of SGH’s Engineering Mechanics and Infrastructure group. He is an expert in crash energy management for railroad vehicles. His work focuses on structural integrity assessments for several types of structures, including rail vehicles and track, pressure vessels and piping, special-purpose mobile equipment, and defense systems.

Martin Mullins

Martin Mullins

Chief Financial Officer

Martin joined SGH in February 2012 and has more than twenty years of executive experience in managing finance, accounting, and information technology for project-based professional service organizations.  As CFO for SGH, he has overall responsibility for corporate finances and accounting.  Prior to joining SGH, Martin worked as the Vice President, Finance for AMEC Environment and Infrastructure and as the CFO for AMEC Geomatrix (a subsidiary of AMEC). 

Jason HerouxJason P. Heroux

Director of Business Development

Jason joined SGH in 1996 and is SGH’s first Director of Business Development. He developed and leads the firm’s corporate marketing and branding program. Prior to his current role at SGH, Jason was a Business Development Manager with StorageNetworks Inc. (SNI), where he was responsible for developing co-marketed services and negotiating multi-million dollar service agreements.

Julianne NevinsJulianne C. Nevins

Director of Human Resources

Julianne joined SGH in 1996 and is a certified professional in Human Resources. She is responsible for directing Human Resources for the firm nationwide. Her areas of responsibility include policies and programs covering employment, compensation, benefits, performance management, employee relations, recruiting and retention, legal compliance, and staff training and development.

Beverly TompkinsBeverly M. Tompkins

Corporate Counsel

Beverly joined SGH in 2003. As Corporate Counsel, Beverly provides legal support, advice and recommendations at all levels of the organization. She also oversees SGH’s Risk Management Department. Beverly ensures the firm’s regulatory compliance with respect to our licensed professionals’ national and international practices. Beverly is admitted to practice in Massachusetts.