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 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.

Sashi MahtaniCCP, CFE

Executive Vice President, Forensics

Sashi Mahtani is a Executive Vice President at VERTEX. Sashi specializes in the investigation and resolution of business disputes, primarily related to the construction and government contracts industries. He has also provided construction oversight and management services for on-going construction projects. Sashi has consulted on behalf of construction companies, government contractors, subcontractors, owners, program managers, architects, engineers, and insurance companies.

Sashi has performed schedule delay, acceleration, cost overrun, and productivity analyses on a variety of projects including wind farms, power plants, condominiums, hotels, airports, manufacturing plants, sports stadiums, nuclear waste remediation sites, retail buildings, and others. Sashi has extensive experience in performing Critical Path Method (CPM) analyses to determine the critical path of a project and the duration and causes of project delays. Work has included the evaluation of numerous causes of delays and cost overruns including abnormal weather, non-conforming work, late material deliveries, late and incomplete design, changed work, labor shortages, force majeure events, differing site conditions, labor inefficiencies, and others. Sashi has assisted both owners and contractors with change order review, project controls implementation, and construction management services. Sashi has also authored expert reports and provided assistance during arbitrations, mediations, and trials.

Sashi is also a co-founder of Breakwater Forensics, LLC. VERTEX acquired Breakwater in 2023.

Education & Certification

B.S. Civil Engineering – University of Illinois at Urbana-Champaign
Executive Education Finance Course at The University of Chicago – Booth School of Business Certified Cost Professional (CCP), Certified Fraud Examiner (CFE)


Association for the Advancement of Cost Engineering (AACE International)
Chicago Building Congress, Legal Assistance Foundation of Metropolitan Chicago (LAF)
The Association of Certified Fraud Examiners (ACFE)

Expert Witness Services

Delay & Disruption, Productivity Loss and Disruption

Government Contracts