VERTEX has Experts that Talk the Talk and Walk the Walk.

Unlike others, VERTEX provides forensic consulting alongside traditional AEC services which allows for a 360 degree view of your project.

VERTEX Services


Need an expert for your case?

Our forensics experts work alongside AEC specialists which enhances our skills and bolsters the credibility of our expert consultants.

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VERTEX delivers innovative solutions on complex projects globally.

Since 1995, VERTEX has completed over 90,000 projects.

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VERTEX believes in a Lifetime of Learning philosophy.

Stay current with our industry experts as they share their insights and knowledge on the built environment.

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VERTEX is looking for talented individuals to join a highly technical team of forensic consultants, design engineers, construction managers, and environmental scientists.

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Have a question or want to speak with a technical professional?

VERTEX is a multi-discipline firm with global coverage. Our international network of resources enables us to provide multi-national clients with the most qualified local professionals who understand the culture, language, and regulatory framework.

Call Us: 888.298.5162

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Call us at 888.298.5162.

Jon LemieuxPE, CCM

Executive Vice President, Owner’s Project Management

Mr. Lemieux is an Executive Vice President at VERTEX. He earned a B.S. in Civil Engineering from the University of Massachusetts. Mr. Lemieux earned an M.S. in Civil Engineering/Construction Management from Worcester Polytechnic Institute.

Mr. Lemieux is a licensed Professional Engineer in Massachusetts. He holds OSHA 10 Hour Construction Safety certification.

Mr. Lemieux is an active member of the engineering community, holding memberships with the A.S.C.E and B.S.C.E

Mr. Lemieux has also served as project director/owner’s project manager on a wide variety of municipal construction projects including town halls (renovations and new construction), public safety building construction (fire, police and public safety), public utility company building projects, school repair and upgrade projects (e.g. window replacements, roof replacements, HVAC repairs and upgrades, and science lab upgrades) and new school construction projects. In many of these projects, Mr. Lemieux assisted the clients in all phases of the design and construction process including designer selection and procurement, project programming, schematic design, design development, construction documents, bidding, construction administration, and closeout. Mr. Lemieux has also completed projects utilizing various construction project delivery methods.

Mr. Lemieux is also a highly respected consultant to the surety claims industry. He has a wide range of experience on projects in areas such as educational facilities, stadiums, offices, transportation, wastewater treatment, biotechnology, hotels, residential, detention facilities, and government military facilities, among others. Mr. Lemieux is an expert in all facets of the construction industry from conception through closeout.

Education & Certification

Professional Engineer (PE) – Civil, State of MA
Massachusetts Certified Public Purchasing Official Program (MCPPO) Cert. for Owner’s Project Managers, State of MA

Haz Waste Supervisor Course


American Society of Civil Engineers (A.S.C.E.), Member
Boston Society of Civil Engineers (B.S.C.E.), Member

Expert Witness Services

Standard of Care, Construction Advisory

Standard of Care, Contractor

Standard of Care, Contractor Termination

Standard of Care, Owner