The engineering consulting industry in New York features a dynamic mix of firms that specialize in areas such as structural, mechanical, and environmental engineering. These companies provide invaluable services that include project management, design, and construction oversight for infrastructure and building projects. Growing emphasis on sustainability and smart technology is shaping the future of the industry, as firms adapt to modern challenges like energy efficiency and climate change. With a broad global footprint, firms are also expanding capabilities to meet technical demands, reflecting how engineering advice is not just local but increasingly integrated worldwide.


The companies listed here represent a mix of sizes, from small to mid-sized firms operating out of New York City and other regions in the state. Many were established decades ago, such as STV founded in 1912 and Thornton Tomasetti launched in 1949, showcasing deep roots in the community. Specializations range from structural and mechanical engineering to consulting services focused on sustainability practices. With employee counts varying from 51 to over 5,000, each firm maintains a unique approach to problem-solving, often prioritizing efficient project implementation and client tailored solutions.


Read on to discover top engineering consulting companies in New York.


Top 19 Engineering Consulting Companies in New York


1. Thornton Tomasetti

  • Website: thorntontomasetti.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 68%, India 16%, United Kingdom (UK) 8%, Other 8%
  • Founded year: 1949
  • Headcount: 1001-5000
  • LinkedIn: thornton-tomasetti

Thornton Tomasetti is a scientific and engineering consulting firm based in New York City, founded in 1949. The company specializes in structural engineering, facade engineering, and sustainability solutions, serving clients in architecture, construction, and defense. With a workforce of approximately 1,828 employees, Thornton Tomasetti operates globally, tackling complex engineering challenges and enhancing project outcomes. They have worked on over 90,000 projects across more than 150 countries, showcasing their extensive experience and expertise. The firm emphasizes innovation and collaboration, investing in research and development to address pressing issues such as climate change and decarbonization. Their commitment to sustainability is evident in their approach to projects, where they aim to reduce risks associated with climate change and improve the built environment.


2. Stv

  • Website: stvinc.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 99%
  • Founded year: 1912
  • Headcount: 1001-5000
  • LinkedIn: stv

STV Incorporated, founded in 1912 and based in New York City, is a professional services firm specializing in architecture, engineering, construction management, and planning. With a workforce of approximately 3,855 employees, STV operates across North America, maintaining over 60 offices. The firm is dedicated to providing innovative solutions for infrastructure projects that not only meet the needs of their clients but also enhance community development and sustainability. STV's portfolio includes significant projects in transportation, water management, and building design, showcasing their expertise in delivering complex infrastructure solutions. Their approach emphasizes local engagement, ensuring that projects are tailored to the specific needs of the communities they serve. STV is also committed to social responsibility, actively participating in initiatives that promote equity and community improvement.


3. C&S Companies

  • Website: cscos.com
  • Ownership type: Private
  • Headquarters: Syracuse, New York, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1968
  • Headcount: 501-1000
  • LinkedIn: c%26s-engineers-inc-

C&S Companies, based in Syracuse, New York, is an engineering and construction firm that has been operational since 1968. With a workforce of approximately 661 employees, the company offers a comprehensive suite of services that includes architecture, environmental consulting, project management, and construction management. C&S serves a variety of clients, including government agencies, healthcare institutions, and commercial developers, helping them navigate complex infrastructure projects. The firm is known for its innovative approach, utilizing state-of-the-art technology such as Building Information Modeling (BIM), virtual reality, and drone services to enhance project execution and client engagement. C&S Companies is dedicated to contributing to community development and sustainability, making it a relevant player in the engineering consulting industry.


4. Syska Hennessy Group

  • Website: syska.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 90%, United Arab Emirates 7%, China 2%
  • Founded year: 1928
  • Headcount: 501-1000
  • LinkedIn: syska-hennessy-group

Syska Hennessy Group is an engineering and consulting firm based in New York, specializing in mechanical, electrical, and plumbing (MEP) services, architectural lighting design, and sustainability solutions. With a workforce of approximately 779 employees, the company operates across multiple sectors, including healthcare, education, aviation, and critical facilities. Syska has been involved in notable projects such as the renovation of healthcare facilities and the design of energy-efficient systems for various buildings. Their focus on optimizing building performance and enhancing occupant comfort reflects their commitment to innovation in engineering. Syska's offices span across major cities in the United States, as well as locations in the United Arab Emirates and China, showcasing their ability to serve clients on a global scale. The firm has not reported any recent funding, indicating a stable operational model that relies on its established reputation and client relationships.


5. Cameron Engineering, an IMEG company


Cameron Engineering & Associates, an IMEG company, is a multi-disciplined consulting engineering and planning firm based in Woodbury, New York. Founded in 1985, the firm has built a reputation for delivering innovative solutions to complex engineering challenges. With a team of over 90 professionals, including licensed engineers and landscape architects, Cameron Engineering offers a wide array of services such as mechanical, electrical, plumbing, civil engineering, and environmental assessments. They are committed to ensuring compliance with regulations while providing cost-effective solutions tailored to their clients' needs. The firm has been involved in numerous projects across various sectors, including transportation, water management, and energy services, showcasing their capability to handle diverse engineering tasks. Their focus on sustainability is evident through their implementation of LEED principles in many projects, reflecting a commitment to environmentally responsible practices. Cameron Engineering's active participation in industry initiatives and their recognition in national rankings further solidify their standing in the engineering consulting field.


6. GPI / Greenman-Pedersen, Inc.

  • Website: gpinet.com
  • Ownership type: Private
  • Headquarters: Babylon, New York, United States (USA)
  • Employee distribution: United States (USA) 99%
  • Founded year: 1966
  • Headcount: 1001-5000
  • LinkedIn: greenman-pedersen-inc-

GPI / Greenman-Pedersen, Inc. (GPI) is an engineering firm based in Babylon, New York, founded in 1966. With a workforce of approximately 1,380 employees, GPI provides a wide array of services that include civil engineering, environmental consulting, and infrastructure development. The firm serves both public and private sector clients, focusing on the design and maintenance of critical infrastructure projects. GPI's expertise spans various areas such as bridges, highways, water/wastewater systems, and intelligent transportation systems. The company has been recognized for its engineering capabilities, ranking #70 in the ENR Top 500 Design Firms and #55 in the Top 100 Pure Designers. GPI emphasizes sustainable practices and community engagement, showcasing a commitment to responsible engineering solutions. Their project portfolio includes significant undertakings like the rehabilitation of the Pulaski Skyway and the Brooklyn Bridge, highlighting their involvement in essential infrastructure projects across the United States.


7. Cosentini Associates

  • Website: cosentini.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1952
  • Headcount: 201-500
  • LinkedIn: cosentini-associates

Cosentini Associates is a New York-based engineering consulting firm that has been active in the building industry since its inception in 1952. With a workforce of approximately 288 employees, the firm specializes in consulting engineering services, particularly in fire engineering, sustainable design, and mission-critical design. Cosentini collaborates closely with architects and construction teams to provide tailored engineering solutions that meet the unique demands of each project. Their portfolio includes a wide range of projects, from commercial and healthcare facilities to educational institutions and cultural landmarks. The firm is recognized for its commitment to sustainability, having been named a LEED Proven Provider by Green Business Certification Inc. This acknowledgment reflects their expertise in energy-efficient design and their role in promoting environmentally responsible building practices. Cosentini operates multiple offices across the United States, further extending their reach and influence in the engineering consulting sector.


8. Kohler Ronan

  • Website: kohlerronan.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1998
  • Headcount: 51-200
  • LinkedIn: kohler-ronan-llc

Kohler Ronan is an engineering consultancy based in New York City and Danbury, Connecticut, established in 1998. The firm specializes in mechanical, electrical, plumbing, fire protection, and technology design, providing comprehensive services that include energy analysis and commissioning. Kohler Ronan collaborates closely with architectural firms and various organizations to create sustainable and efficient building systems. Their portfolio features a range of notable projects, including prestigious museums, educational institutions, and healthcare facilities. The firm has successfully completed over 25 net-zero or net-zero-ready buildings and has achieved more than 12 LEED Platinum and Gold certifications. Kohler Ronan is also recognized for its commitment to sustainability, with many of its engineers holding LEED accreditation. They actively participate in initiatives aimed at reducing carbon emissions and promoting energy efficiency, positioning themselves as a responsible player in the engineering consulting industry.


9. DeSimone Consulting Engineering

  • Website: de-simone.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 71%, Colombia 14%, United Kingdom (UK) 9%, Other 5%
  • Founded year: 1969
  • Headcount: 501-1000
  • LinkedIn: desimone-consulting-engineers

DeSimone Consulting Engineering, based in New York City, has been a prominent player in the engineering consulting field since its inception in 1969. The firm specializes in structural engineering, façade consulting, and construction consulting services, catering to a wide range of clients including architects, developers, and contractors. With a workforce of approximately 700 employees, DeSimone operates multiple offices across the United States and internationally, including locations in the United Kingdom, Colombia, and the United Arab Emirates. The firm has successfully completed over 13,000 projects, demonstrating its extensive experience and expertise in various sectors such as residential, commercial, and cultural developments. DeSimone is known for its innovative approach to design and engineering, utilizing advanced technology and collaborative processes to deliver effective solutions. Their commitment to quality and performance has earned them recognition in the industry, including listings on Engineering News Record's Top 500 Design Firms.


10. Jaros, Baum & Bolles

  • Website: jbb.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1915
  • Headcount: 201-500
  • LinkedIn: jaros-baum-%26-bolles

Jaros, Baum & Bolles Consulting Engineers, LLP, based in New York City, is a consulting engineering firm that has been operational since 1915. The firm specializes in mechanical, electrical, and plumbing (MEP) engineering services, catering primarily to businesses and organizations within the construction and real estate sectors. JB&B is particularly noted for its work on high-rise projects, where their expertise in energy-efficient systems is increasingly sought after. The firm is recognized for its innovative engineering solutions, which not only meet client needs but also adhere to stringent urban regulations. With a workforce of approximately 398 employees, JB&B continues to play a significant role in shaping the engineering landscape, particularly in urban environments where complex challenges require tailored solutions.


11. WSP, Formerly AKF

  • Website: akfgroup.com
  • Ownership type: Corporate
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 79%, Mexico 17%, Other 4%
  • Latest funding: May 2024
  • Founded year: 1989
  • Headcount: 201-500
  • LinkedIn: akf-group

WSP, formerly known as AKF, is an engineering and consulting firm based in New York City, established in 1989. The company specializes in design and technology services aimed at creating high-performing buildings. Their expertise spans multiple engineering disciplines, including mechanical, electrical, plumbing, and fire protection engineering. WSP serves clients across various sectors, notably healthcare and education, providing solutions that enhance building performance and ensure compliance with evolving regulations. The firm has a strong commitment to sustainability and energy efficiency, as evidenced by their involvement in projects like the Net Zero Energy Welcome Center at Millersville University. With a workforce of approximately 384 employees, WSP has a significant presence in the United States and Mexico. The firm recently became a member of WSP Global, which allows them to expand their service offerings and enhance their project capabilities. Their focus on innovative engineering solutions and commitment to client satisfaction positions them as a relevant player in the engineering consulting industry.


12. Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C.


Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C. is an engineering consulting firm based in Mountainville, New York. Established in 1986, the company specializes in civil, geotechnical, and structural engineering, as well as environmental remediation. Tectonic serves a wide range of clients across sectors such as transportation, healthcare, and municipal projects, providing expert guidance for complex and regulatory-driven initiatives. Their services include construction phase monitoring, program management, and special inspections, among others. Tectonic has been recognized for its excellence in engineering, notably receiving the 2023 Diamond Award from the ACEC New York Engineering Excellence Awards for their work on the Upper Collinsville Dam project. This recognition underscores their expertise and commitment to delivering high-quality engineering solutions. With a workforce of approximately 484 employees, Tectonic is equipped to handle projects of varying scales and complexities, ensuring that they meet the specific needs of their clients.


13. ME Engineering, P.C., Mechanical & Electrical Engineering

  • Website: meengineering.com
  • Ownership type: Private
  • Headquarters: Rochester, New York, United States (USA)
  • Employee distribution: United States (USA) 99%, Other 1%
  • Founded year: 1991
  • Headcount: 51-200
  • LinkedIn: me-engineering-p.c.

ME Engineering, P.C. is a mechanical and electrical engineering firm based in Rochester, New York, with additional offices in Buffalo, Syracuse, and the Capital District. Established in 1991, the company specializes in mechanical, electrical, and plumbing (MEP) engineering services. They cater to a variety of sectors, including education, healthcare, hospitality, and industrial manufacturing. Their expertise extends to building commissioning, fire protection, and advanced modeling services, which are crucial for creating efficient and sustainable building systems. ME Engineering has been recognized for its commitment to sustainability, being one of the first 100 members of the United States Green Building Council. The firm has successfully completed numerous projects, demonstrating their capability in delivering innovative engineering solutions that meet the evolving needs of their clients. With a focus on collaboration and understanding client requirements, ME Engineering aims to provide effective engineering solutions that contribute to a sustainable future.


14. LERA Consulting Structural Engineers

  • Website: lera.com
  • Ownership type: Private
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 51%, India 37%, China 6%, Other 5%
  • Founded year: 1923
  • Headcount: 51-200
  • LinkedIn: lera

LERA Consulting Structural Engineers, based in New York City, is a structural engineering firm that has been operational since 1923. With a workforce of approximately 189 employees, LERA provides a wide array of services, including structural design, peer review, forensic engineering, and special inspections. Their clientele includes architects, contractors, and developers, all seeking expert guidance to ensure the structural integrity of their projects. LERA has a rich portfolio that features landmark projects such as the World Trade Center and the Bank of China Tower, showcasing their expertise in high-rise and complex structures. The firm is also recognized for its commitment to sustainability, actively participating in the SE2050 program aimed at reducing embodied carbon in structural design. LERA operates not only in the United States but also has a presence in international markets, with offices in Mumbai, Shanghai, Hong Kong, and Seoul. Their long-standing reputation for technical excellence and innovative design solutions makes them a notable entity in the engineering consulting field.


15. Lilker Associates, an IMEG Company

  • Website: lilker.com
  • Ownership type: Corporate
  • Headquarters: New York, New York, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: July 2023
  • Founded year: 1985
  • Headcount: 51-200
  • LinkedIn: lilker-associates

Lilker Associates, an IMEG Company, is an engineering consulting firm based in New York City, founded in 1985. The firm specializes in comprehensive design and planning services for buildings and infrastructure, catering to a variety of clients, including businesses and government entities. Their expertise spans multiple disciplines, including civil, structural, mechanical, and electrical engineering, as well as plumbing, fire protection, and technology design. Lilker Associates emphasizes sustainability and performance optimization, offering services that help clients achieve energy efficiency and regulatory compliance. As part of IMEG, which operates over 90 locations across the United States, Lilker Associates benefits from a broad network and resources, enhancing their ability to deliver high-quality engineering solutions. They are committed to creating positive outcomes for communities and the environment through innovative engineering practices.


16. THEMAG Engenharia e Gerenciamento Ltda


THEMAG Engenharia e Gerenciamento Ltda, founded in 1961, is a prominent engineering consulting firm based in Brazil. The company specializes in various areas, including environmental studies, energy consulting, and infrastructure projects. With a commitment to sustainable development, THEMAG provides essential services that help clients navigate regulatory requirements effectively. Their expertise extends to conducting Environmental Impact Assessments (EIA) and developing plans for monitoring environmental impacts, showcasing their dedication to responsible project management. The firm operates primarily in Brazil, serving a mix of private businesses and government entities, which highlights their capability to handle projects of varying scales and complexities. THEMAG's adherence to quality standards, such as ISO 9001-2015, further underscores their commitment to delivering high-quality engineering solutions.


17. LaBella Associates

  • Website: labellapc.com
  • Ownership type: Private
  • Headquarters: Rochester, New York, United States (USA)
  • Employee distribution: United States (USA) 97%, Spain 3%
  • Founded year: 1978
  • Headcount: 1001-5000
  • LinkedIn: labella-associates-p-c-

LaBella Associates, based in Rochester, New York, is a consulting firm that has been active since 1978. The company specializes in a broad spectrum of professional services, including architecture, engineering, and environmental consulting. They cater to a variety of clients, ranging from businesses to government entities, helping them navigate intricate infrastructure and environmental challenges. LaBella Associates prides itself on fostering strong partnerships with clients, emphasizing collaboration and responsiveness in their service delivery. Their expertise spans multiple sectors, including commercial, healthcare, education, and public works, allowing them to tackle a wide range of projects. The firm is committed to sustainability and community involvement, reflecting their dedication to both client success and social responsibility. With a workforce of approximately 1,439 employees, LaBella Associates is well-equipped to manage complex projects and deliver tailored solutions.


18. Lizardos Engineering Associates D.P.C.


Lizardos Engineering Associates D.P.C. is a private engineering firm based in Mineola, New York, with a workforce of approximately 91 employees. Founded in 1965, the company has built a strong reputation in the engineering sector, particularly in mechanical, electrical, and plumbing (MEP) engineering services. They provide comprehensive design and consulting solutions tailored to various industries, including healthcare, education, and commercial sectors. Lizardos is committed to sustainable design practices, focusing on creating facilities that not only meet client needs but also adhere to environmental standards. Their project portfolio showcases a range of successful initiatives, emphasizing their expertise in navigating complex engineering challenges while ensuring compliance with industry regulations. The firm prides itself on its client-centric approach, with a significant percentage of its work coming from repeat clients, reflecting their dedication to quality and service.


19. M&J Engineering

  • Website: mjengineers.com
  • Ownership type: Private
  • Headquarters: New Hyde Park, New York, United States (USA)
  • Employee distribution: United States (USA) 98%, Other 2%
  • Founded year: 2004
  • Headcount: 201-500
  • LinkedIn: m%26j-engineering

M&J Engineering P.C. is an engineering and consulting firm based in New Hyde Park, New York, established in 2004. The company specializes in a variety of services, including engineering design, construction management, and environmental consulting. M&J Engineering serves a wide range of clients, including federal, state, and local government agencies, as well as private sector clients. Their focus is primarily on infrastructure projects, ensuring compliance with regulatory standards and delivering innovative solutions. Over the years, M&J has completed more than 150 projects, showcasing their expertise in managing complex assignments. Notable projects include the $236 million Superstorm Sandy restoration of the Queens Midtown Tunnel and the $700 million NSA East Campus Building 2 for the US Army Corps of Engineers. The firm operates multiple offices across the United States and is recognized as a certified Minority Business Enterprise (MBE) and Small Business Enterprise (SBE).



Engineering Consulting Insights: Key Companies in New York


CompanyHeadquarterSizeFoundedOwnership
Thornton TomasettiNew York, New York, United States (USA)1001-50001949Private
StvNew York, New York, United States (USA)1001-50001912Private
C&S CompaniesSyracuse, New York, United States (USA)501-10001968Private
Syska Hennessy GroupNew York, New York, United States (USA)501-10001928Private
Cameron Engineering, an IMEG companyWoodbury, New York, United States (USA)51-2001985Corporate
GPI / Greenman-Pedersen, Inc.Babylon, New York, United States (USA)1001-50001966Private
Cosentini AssociatesNew York, New York, United States (USA)201-5001952Private
Kohler RonanNew York, New York, United States (USA)51-2001998Private
DeSimone Consulting EngineeringNew York, New York, United States (USA)501-10001969Private
Jaros, Baum & BollesNew York, New York, United States (USA)201-5001915Private
WSP, Formerly AKFNew York, New York, United States (USA)201-5001989Corporate
Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C.Mountainville, New York, United States (USA)501-10001986Private
ME Engineering, P.C., Mechanical & Electrical EngineeringRochester, New York, United States (USA)51-2001991Private
LERA Consulting Structural EngineersNew York, New York, United States (USA)51-2001923Private
Lilker Associates, an IMEG CompanyNew York, New York, United States (USA)51-2001985Corporate
THEMAG Engenharia e Gerenciamento LtdaBrooklyn, New York, United States (USA)10001+1961Private
LaBella AssociatesRochester, New York, United States (USA)1001-50001978Private
Lizardos Engineering Associates D.P.C.Mineola, New York, United States (USA)51-2001965Private
M&J EngineeringNew Hyde Park, New York, United States (USA)201-5002004Private


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