Senior Leadership

Cosentini’s leaders are industry experts, problem-solvers, and visionaries who create long-lasting relationships with clients and deliver the best possible solutions. We work to improve the built environment every day.  

  • Marvin A. Mass, PE, HAIA

    01-Marvin+MassChairman

    Marvin A. Mass, PE, joined Cosentini Associates at its founding in 1952 and has been instrumental in developing the firm into one of the top consulting engineering companies in the United States. He has been a force in the global design and construction industry for many years – largely as a result of his expertise as a mechanical engineer and his commitment to design innovation. His engineering career spans 60 years and includes pioneering achievements such as his design of New York City’s first total energy plant and chilled-water storage plant; water-side economized air-conditioning systems for office buildings; eutectic salts and vacuum tube solar collector systems; and the systems currently operating in the renowned Solar Energy House at the University of Delaware. 

    As chairman of Cosentini Associates, Marvin has participated in the engineering of many of the world’s most recognized projects including the Guggenheim Museum in Bilbao, Spain; Four Times Square, the first green high-rise office building in New York City; Battery Park City’s The Solaire, the first residential high-rise in the country to obtain a LEED Gold certification from the US Green Building Council (USGBC); and many well-known New York City office buildings such as The Ford Foundation, AT&T, CBS Headquarters, the Equitable Tower, the Time Warner Center, among many others.

    In 2012, Marvin published The Invisible Architect, an engaging memoir about his ground-breaking work with many leading architects in New York City and around the world. He was a long-standing faculty member at Harvard University’s Graduate School of Design and Yale University School of Architecture, and he has guest-lectured at the University of Pennsylvania, Pratt Institute, and the Cooper Union. His achievements have been widely recognized by design and cultural organizations with various awards, among them the Brown Medal of the Franklin Institute, the 1990 American Institute of Architects’ Institute Honors, and a Lifetime Achievement Award from the American Society of Heating and Air Conditioning Engineers (ASHRAE). He is a member of the National Society of Professional Engineers (NSPE); the New York State Association of the Professions; the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE); the Building and Architectural Technology Institute; the Institute for the Study of the High-Rise Habitat; and the American Institute of Architects (AIA).  He holds a degree in mechanical engineering from New York University and is a licensed engineer in 23 states.

    Expertise: Consulting Engineering
    Select Projects:Guggenheim Museum, The Solaire, Time Warner Center, Owens Corning World Headquarters, UBS Headquarters

  • Douglas C. Mass, PE, LEED AP

    02-Doug+MassPresident

    Doug is the President of Cosentini, internationally recognized in the design and construction industry because of his expertise as a mechanical engineer, his commitment to design innovation, and a long list of high-performance building projects designed by leading architects. His work in the area of LEED/sustainable design has involved design commissions from both corporate and government clients who have sought his assistance on the development of building systems that are energy efficient, ensure occupant comfort, and promote the preservation of the environment. Under his direction, Cosentini has engineered more than 50 projects that have received LEED certification, and more than 100 current projects that will achieve various levels of LEED certification.

    Doug’s career spans more than 30 years and includes pioneering achievements such as the design of the first sustainable high-rise office building in Manhattan (4 Times Square) and the first LEED Gold residential high-rise in the country (The Solaire in New York City’s Battery Park City). He is also well-known for implementing underfloor air delivery systems at the first corporate headquarters in the US to incorporate this technology (Owens-Corning’s headquarters in Toledo, OH), as well as subsequent advances as seen in Goldman Sachs’ new headquarters in New York City and FedEx’s new headquarters in Memphis, TN. A significant current project is Shanghai Tower, which at 638 meters will be the tallest building in China.

    Mr. Mass’s dedication to the education of future engineers and architects is evident in his service at Columbia University’s School of Architecture and at his alma mater, Brown University. He is also a committed lecturer who has spoken extensively on sustainable design and underfloor air system design at the US Department of State, the New York City Economic Development Corporation, and ASHRAE. He has a Bachelor of Science in Mechanical Engineering from Brown University, is a registered engineer in 26 states and two Canadian provinces, and is a member of the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE), the U.S. Green Building Council (USGBC), and serves on the board of the Salvadori Center.  Doug is an accomplished photographer who specializes in portraits. 

    Expertise: Consulting Engineering, Sustainable Design, Commercial, Headquarters, International, Mixed-use, Residential
    Select Projects:Shanghai Tower, The Solaire, The New School, Guggenheim Museum, The Bow/EnCana Headquarters

  • Edward Barbieri, PE, LEED AP

    03-Ed+BarbieriExecutive Vice President

    Ed joined Cosentini in 1984 and, since that time, has been responsible for the systems design and overall project management of millions of square feet of construction, with a particular focus on tenant interiors and corporate headquarters. He has also had oversight for major trading installations for financial services companies including Bank of America, Bloomberg LP, JP Morgan Chase, UBS, American Express, Goldman Sachs, and others.

    He received his Bachelor of Science in Mechanical Engineering from the Polytechnic Institute of New York and is a licensed professional engineer in New York State. Ed is a member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE).

    Expertise: Consulting Engineering, Sustainable Design, Commercial, Interiors, Residential
    Select Projects:UBS Headquarters, The Bow/EnCana Headquarters, Prudential Insurance Company Headquarters, Macquarie Group, Shanghai Tower

  • Michael W. Maybaum, PE

    05-Mike+MaybaumExecutive Vice President 

    Since joining Cosentini in 1982, Mike has been responsible for major business development efforts, particularly in the high-end residential market sector, including a number of recent supertall residential projects. He is also very active in staff hiring and professional development, and in critical internal financial operations which has led to increased profitability and higher quality professional engineering services.  Mike has successfully deployed new systems, products, and advanced building techniques in major building projects; these include prefabricated central plants, chilled-beam heating and cooling systems, underfloor air, solar energy, and other highly energy-efficient products. 

    During his career at Cosentini, Mike has managed millions of square feet for a wide range of projects, including mixed-use facilities, corporate headquarters hotels, residential developments, high-rise office buildings, and research laboratories. Prior to joining the firm, he was Director of the Passive and Hybrid Solar Energy Division at the U.S. Department of Energy (DOE). His commitment to energy conservation and sustainable design principles is rooted in his work there, where he directed the Passive and Hybrid Solar Energy Division’s more than 300 research, development, and demonstration projects for building applications; many of these outcomes became the basis for sustainable building elements in use today.  

    Mike received his Bachelor of Science in Aerospace Engineering from The Catholic University of America and his Master of Science in Engineering Management from The George Washington University. He is a licensed engineer in numerous states and a member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE). 

    Expertise: Consulting Engineering
    Select Projects:Songdo IBD, Museum of the Built Environment (MOBE), Baccarat Tower, City Point, Empire Outlets

  • Scott R. Ceasar, PE, LEED AP

    06-Scott+CeasarSenior Vice President / Director of Sustainable Design

    Scott is a Principal and the Director of Sustainable Design.  He promotes sustainable design practices in the building industry and within the firm, focusing on creating systems that are energy-efficient, environmentally responsible, and ensure occupant comfort. He has been involved in sustainable design work since 1996 when he encouraged Cosentini to join the U.S. Green Building Council (USGBC), the organization that created and disseminated the Leadership in Energy and Environmental Design (LEED) rating system. Some of his major projects include Four Times Square (the first “green” commercial high-rise office building in New York City); Battery Park City’s The Visionaire (the first residential high-rise in the country to receive LEEDTM Platinum certification); Skanska USA’s New York offices (a LEED Platinum Commercial Interiors project); Memorial Sloan-Kettering Cancer Center (LEEDTM Silver); the Stephen M. Ross School of Business at the University of Michigan (LEEDTM Silver); and numerous other projects for corporate and government clients.

    Scott consults on many projects to insure that sustainable design goals and energy efficiency targets are met. He has developed and supervises Cosentini’s advanced technology and analysis group, which is responsible for researching and implementing new technology and performing high-level computational analyses (CFD analysis, energy simulations, and 3D modeling). Mr. Ceasar is a LEED AP BD+C and oversees the LEED certification process, a service provided by Cosentini. 

    Scott joined Cosentini Associates in 1988 and is now a Senior Vice President.  His wide-ranging project experience includes athletic facilities, academic buildings, corporate headquarters, office buildings, hotels, residential high-rises, museums and performing arts centers, public assembly facilities, laboratories, retail facilities, mixed-use developments, and courthouses.  He holds a Bachelor of Science in Mechanical Engineering from Johns Hopkins University and a J.D. from the Brooklyn Law School. He is a licensed Mechanical Engineer in New York State, and an active member of the USGBC and the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE).

    Expertise: Consulting Engineering, Sustainable Design, Cultural, Education
    Select Projects:The Visionaire, Memorial Sloan-Kettering Cancer Center, Stephen M. Ross School of Business, New York Wheel, SkyRise Miami

  • Dominick DeRobertis, PE, LEED AP

    07-Dominick+DeRobertisSenior Vice President/Director of Healthcare

     Dominick joined Cosentini Associates in 2000 and became a senior vice president in 2007. He has more than 25 years of experience in a wide variety of project types including hospitals, museums, office buildings, hotels, educational facilities, residential buildings, tenant interiors, and retail projects. Noteworthy healthcare projects include the new Ambulatory Care Building, Bellevue Hospital, New York City; a new Diagnostic and Treatment Facility, Kings County Hospital, Brooklyn, New York; the Cleveland Clinic/Lou Ruvo Center for Brain Health, Las Vegas, Nevada; and the American Hospital Dubai. In the education realm, he has led projects for the University Center, The New School, New York; the Ross School of Business, University of Michigan, Ann Arbor, Michigan; and a number of projects for the New York City School Construction Authority.  

    He holds a Bachelor’s of Engineering in Mechanical Engineering from Manhattan College and is a licensed professional engineer in New York State and a LEED Accredited Professional. He is also a member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE), the American Society for Healthcare Engineering (ASHE), and the National Society of Professional Engineers (NSPE).

    Expertise: Consulting Engineering, Sustainable Design, Education, Healthcare
    Select Projects:Bellevue Hospital, Cleveland Clinic, The New School, Ross School of Business, Abraham Lincoln Presidential Library

  • Robert M. Leber, PE, LEED AP

    08-Bob+LeberSenior Vice President/Director of Cambridge Office 

    Bob joined Cosentini in 1987 and is a senior vice president and director of the firm’s Boston-area office. He is a recognized expert in the design of mechanical systems for project types ranging from laboratories and educational buildings to corporate headquarters, high-rise residential and mixed-use developments, and hotels. He also has significant experience in public assembly and government facilities. His current work includes a 300,000 sf headquarters for TripAdvisor, Needham, Massachusetts; Parcel I at Fan Pier, Boston, a Class A office building and new home to Goodwin Proctor; and the Landmark Center Redevelopment, a complete renovation and expansion of a mixed-use complex including 600,000 gsf office, 300,000 gsf retail, 500,000 gsf of below-grade parking, and 600 residential units. 

    He earned a Bachelor of Science in mechanical engineering from Clarkson University and his Master’s in Business Administration from Boston College. He is a licensed professional engineer in numerous states and a member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE), the National Council of Engineering Examiners, and the Society for College and University Planning (SCUP). Bob has lectured on sustainable building design, underfloor air distribution systems, and building commissioning at the Massachusetts Institute of Technology's Graduate School of Architecture, and at several workshops held at the annual BUILD Boston conference. 

    Expertise: Consulting Engineering, Sustainable Design, Education, Residential, Commercial
    Select Projects:Seaport Square, Kensington Place, Hayward Place, NKU – Griffin Hall, University of Chicago

  • Bruno (Bud) J. Spiewak, PE, AIA

    09-Bud+SpiewakSenior Vice President /Director of Chicago Office 

    Bud joined Cosentini in 1984 and is the director of the firm's Chicago office. His mechanical engineering experience spans more than twenty years and includes museums, hotels, office buildings, laboratory and related research facilities, academic buildings, retail and mixed-use developments, district cooling plants and data centers and technology facilities to accommodate e-commerce companies. 

    He holds Bachelor of Science and Master of Architecture degrees from the University of Illinois and is both a registered architect and licensed professional engineer in the State of Illinois. He is a member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE), the American Institute of Architects (AIA), and the Society for College and University Planning (SCUP). 

    Expertise: Consulting Engineering, Commercial, Residential
    Select Projects:111 West Wacker Drive, Queens Plaza, Northwestern University – Bienen School of Music, SC Johnson Wax Museum Project Honor, 150 N Riverside

  • Onorius Vaidean

    11-Onorius+VaideanSenior Vice President/Director of Information Technologies

    Onorius joined Cosentini Information Technologies in 1997 and became its director in 2006. His career began with designing telecommunications cabling infrastructure for corporate offices and headquarters, mission-critical facilities, hotels, convention centers, high-rise residential buildings, government facilities, and cultural centers. Since then, Onorius has designed security and audiovisual systems, LAN/WAN and voice networks, provided Distributed Antennae System (DAS) performance specifications and wireless infrastructure system design. His expertise is in the convergence of technology with building systems, including but not limited to information technologies, audiovisual, security, MEP, fire protection, lighting, BMS, and building automation.

    From 1999 to 2004, he served as the IT project manager for the Time Warner Center, a 2 million sf mixed-use complex in the heart of New York City. For this project, he presented an original technology business model to the developers using the size and scale of the building’s varied tenants and uses. The business model incorporated four elements - voice/data/high-speed Internet/CATV; wireless technologies; rooftop technology; and broadcast sites placed throughout the building – and gave the project the potential for additional revenue streams to offset project costs. Onorius’ work on this project earned Cosentini the 2004 ACEC Diamond Award. Onorius has a Master of Science in Telecommunications Engineering from the Technical University of Cluj-Napoca, Romania. 

    Expertise: Information Technologies
    Select Projects:Time Warner Center, Shanghai Tower, ExxonMobil, Devon Energy Corporate Headquarters, The Bow/EnCana Headquarters

  • Vladimir Yarmarkovich, PE, LEED AP

    10-Vlad+YamarkovichSenior Vice President

    Vlad, a senior vice president with more than 25 years of experience in the design of mechanical systems, joined Cosentini in 1989. His particular expertise is in the design of HVAC systems for laboratories, performing arts venues, educational buildings, and athletic facilities. Throughout his career, he has incorporated various engineering innovations into the full range of his work, including underfloor air systems, displacement ventilation systems, and chilled beams.

    Vlad is a licensed professional engineer in several states and a LEED Accredited Professional. He holds a B.S. in Mechanical Engineering from Moscow Civil Engineering University, and is a member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) and the American Society of Mechanical Engineers (ASME). He has served as a panelist at a number of Build Boston conferences, and contributed to “Chilled Beams or Expensive Diffusers?” which appeared in the ASHRAE Journal. In his spare time, Vlad is a long-distance runner.

    Expertise: Consulting Engineering, Sustainable Design, Education, Residential, Commercial
    Select Projects:Seaport Square, Kensington Place, Hayward Place, NKU, University of Chicago

  • Roman Kuzmicki

    19-Roman+KuzmickiDirector of Quality Control/Vice President

    Roman joined Cosentini in 2005 and directs all Quality Assurance & Technical Standards efforts. He has more than twenty years of experience in a wide variety of project types including residential and mixed-use developments, healthcare facilities, office buildings, and mission-critical facilities. Roman leads a team of quality assurance specialists to conduct project reviews, research and disseminate information about new technologies to technical staff, and update the firm’s overall technical standards. 

    Of particular note is his work on Shanghai Tower. He spent several months in Shanghai coordinating the electrical design and presenting design concepts to panels of Chinese experts. Reconciling the Chinese national codes, Shanghai municipal codes, and various international standards was a major project challenge.

    He studied aerospace engineering at the Polytechnic Institute of New York and is a licensed professional engineer in New York State. He chairs the Electrical Code Committee of the American Council of Engineering Companies (ACEC) of New York - Metropolitan Region, and is a member of the American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), the National Fire Protection Association (NFPA), the Institute of Electrical and Electronics Engineers (IEEE), and the International Code Council (ICC). Roman’s teaching experience includes instructing engineering students in electrical design at New York University’s School of Continuing Education. 

    Expertise: Consulting Engineering
    Select Projects:Shanghai Tower, The Bow/EnCana Headquarters, ExxonMobil, Devon Energy Corporate Headquarters, Citigroup Court Square II

  • Jordan Fox

    17-Jordan+FoxDirector of Interiors/Vice President 

    Jordan joined Cosentini in 2002 and is a vice president and the director of the Interiors Studio. With more than thirty years of mechanical engineering experience, his work ranges from interior fit-outs, corporate headquarters, and commercial office buildings to research and development facilities, academic projects, retail, and high-rise residential buildings. Noteworthy projects include an eight-year renovation of Carnegie Hall, and a seven-year restoration of New York City Center’s theater, both landmarked buildings that are listed on the National Register of Historic Places. 

    His professional publications include "A Graphical Approach to DDC Programming," a featured cover article in Consulting Specifying Engineer magazine, and Audubon House: Building the Environmentally Responsible, Energy-Efficient Office, a book for which he served as contributing editor. Jordan’s engineering design of the Audubon House received the New York State Governor's Award for Energy Excellence and the Energy Project of the Year award from the Association of Energy Engineers.

    Jordan holds a Bachelor of Science in Mechanical and Ocean Engineering from the University of Rhode Island, and is a licensed professional engineer in New York State and a member of the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE). He is an avid cyclist.

    Expertise: Consulting Engineering, Interiors

  • Rockwood J. Edwards, PE

    16-Rocky+EdwardsDirector of Code Consulting 

    Rocky, a senior fire protection engineer and code consultant, joined Cosentini in 2010 to establish a code consulting group, and to strengthen our fire engineering and life safety service offerings. His responsibilities include advising clients regarding building and fire codes as well as other specialized codes. His work includes the design of fire protection systems, developing solutions to comply with the intent of the building and fire codes/regulations, and negotiations with local authorities. Significant projects include Seaport Blocks B + C, The Kensington, and The Millennium Tower, all in the Boston area.  

    Rocky received a Bachelor of Science in Mechanical Engineering and a Master of Science in Fire Protection Engineering from Worcester Polytechnic Institute (WPI).  He is a member of the Society of Fire Protection Engineers, Local Chapter SFPE Board, and the National Fire Protection Association (NFPA). He enjoys attending sporting events and camping with his family. 

    Expertise: Fire Engineering, Code Consulting
    Select Projects:Seaport Square Blocks B+C, The Kensington, The Millennium Tower, Boston University Law Tower, Brigham and Women’s Hospital - NICU Expansion

  • Yena Han, MIES, LC, LEED AP BD+C

    Yena HanDirector of Lighting

    Ms. Han joined Cosentini as a Senior Associate with 10 years of lighting design experience and leads our specialty lighting design efforts. Prior to Cosentini, Ms. Han worked for Fisher Marantz Stone specializing in architectural lighting design and controls for complex projects all over the world. Ms. Han has experience in the design of cultural, academic, civic, residential, exterior, landscape, master and campus planning, historic renovation, memorial, commercial, spiritual, industrial, retail, healthcare, and other project types including custom light fixture design, product line consulting, and artistic collaborations.  

    She has a Bachelor of Architectural Engineering from Penn State University and is a member of the Illumination Engineering Society (IES), the International Association of Lighting Designers (IALD), the U.S. Green Building Council (USGBC), Designers Lighting Forum of New York (DLFNY), and the Architectural League of New York.  Ms. Han has spoken at the Designers Lighting Forum, Open House New York, and the ASHRAE Conference.

    Expertise: Lighting

  • Whitney Smith, LEED AP

    26-Whitney+SmithDirector of Sustainable Services

    Upon joining the firm in 2007, Whitney launched Cosentini’s sustainable building consulting practice with a focus on high-performance buildings seeking LEED certification. As Director of Sustainable Services, she specializes in innovative and environmentally responsible buildings, and has consulted on more than 50 LEED projects. 

    With more than fifteen years of project management experience, her new construction and existing buildings projects include complex high-rise, mixed-use commercial and residential buildings, academic institutions, corporate headquarters, hotels, retail buildings, and interior fit-outs. Her expertise in international work includes the successful LEED Certification of six projects in Songdo International Business District, Republic of Korea.

    Whitney holds a Bachelor of Arts from Colgate University and is a LEED Accredited Professional BD+C. She is an active member of the U.S. Green Building Council (USGBC) for which she reviews educational sessions for the annual GreenBuild Conference, and of the Urban Green Council (USGBC’s New York chapter) where she serves on the Monthly Programs Committee. She is a certified yoga teacher as well as a keen Adirondacks hiker, cyclist, and skier.

    Expertise: Sustainable Design, LEED Facilitation
    Select Projects: Songdo, Chadwick International School, Mirae Asset Center 1, Museum of the Built Environment (MOBE), University of Michigan Ross School of Business

  • Lenore LeDonne

    20-Lenore+LeDonneDirector of Human Resources

    Lenore has been with Cosentini for more than 25 years, becoming the firm’s Director of Human Resources in 2002. As HR Director, she serves as liaison between senior management and staff, manages all employee benefits, and monitors compliance with labor laws. She leads the firm’s recruitment efforts, implementing employee orientation and empowerment programs. Lenore also crafts human resources training in concert with our parent company, Tetra Tech. 

    Lenore received her Certificate in Human Resource Management from New York University’s School of Continuing and Professional Studies; she also received a Certificate in the Essentials of Human Resource Management from New York Institute of Technology in 2005. She is a member of the Society for Human Resource Management (SHRM), and a licensed Notary Public in New York State. 

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