Find the right engineering partner.

FSI is an award-winning technology and professional services provider

San Diego, CA

Small Enough to Listen, Big Enough to Deliver.

Rolling Hills Estates, CA

Predictable delivery for complex capital programs.

Newport Beach, CA

Warfighter-Focused Engineering and Design

San Diego, CA

Full-service civil engineering and land surveying in Southern California

Anaheim, CA

World-Class Quality Solutions for your Infrastructure Project

Cerritos, CA+3

Ingenuity That Shapes Lives

Chicago, IL+11

Over 50 Years of Engineering Excellence

Rancho Santa Margarita, CA

Tomorrow's Technology, Delivered Today.

Orcutt, CA

Nationally recognized. Locally preferred.

Greenwood Village, CO+15

We are your valued project partner.

Beverly Hills, CA+1

Leading Geotechnical Consulting Firm

San Dimas, CA

Geotechnical, Environmental & Industrial Services

San Ramon, CA

Listening to What Our Clients Want, Delivering Solutions.

Ontario, CA

Geotechnical Engineering and Geotechnical Investigations.

Riverside, CA+1

Innovative and Effective Solutions for Earth-Related Projects

Irvine, CA

Engineering Excellence

Las Vegas, NV+5

Practical Solutions to Support You From Ground to Structure.

San Diego, CA+10

Geotechnical Design and Subsurface Exploration.

Waipahu, HI+3

Consulting Civil & Agricultural Engineers, Water Resource Specialists, and Land Surveyors

Mesa, AZ+1

Geotechnical Engineering and Subsurface explorations.

Irvine, CA

Structural Engineering and Building Envelope Solutions

New York, NY+3

Engineering & Management Services

Los Angeles, CA

Real relationships. Real impacts. Real partnerships.

Corona, CA