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


VERTEX delivers innovative solutions on complex projects globally.

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

View Portfolio


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.

View Insights

Grow Your Career

Join Our Team

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

Learn More

Contact Us

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

Call Us

Call us at 888.298.5162.

Mark DegenaarsLEED GA

Chief Operating Officer, The Vertex Companies, LLC

Mr. Degenaars is the COO at The Vertex Companies. He has been with VERTEX since 2010 with a primary focus as a consultant to the surety claims industry and private/public developers.

Mr. Degenaars brings over 25 years of project management, facility management, private/public development and construction experience to each assignment. He has successfully managed a large variety of projects ranging from various types of vertical construction to heavy highway/civil design projects. Mr. Degenaars has served as an expert and fact witness for a variety of projects and prior to joining VERTEX, Mr. Degenaars owned and managed his own consulting firm for nearly a decade.

Education & Certification

B.A., History, University of Richmond
Project Management and Construction Cost Estimating, New York University

Expert Witness Services