About Us

We are a “people first” civil and structural design firm with demonstrated success in the engineering of concrete, steel, and wood framed structures. These projects range from hillside custom homes to large scale urban mid-rise developments, and more. Our team is comprised of Professional Engineers, committed to the success of your project from start to finish. We utilize our combined SKILLS, years of EXPERIENCE and a solution driven MIND SET to create cost effective construction documents while still maintaining the design intent of the architect.

Our Offices

Orange County

23172 Plaza Pointe Dr. #145, Laguna Hills, CA 92653



Los Angeles



Northern California



Core Leadership

Amir Deihimi, P.E.
Amir Deihimi has 20+ years of engineering experience and brings a consistently strong record of client satisfaction. Through his responsiveness to clients’ needs along with his technical abilities and project leadership, Amir brings a real value to Core’s clients and projects. His broad range of experience with various types of projects and building materials provides our clients with the most efficient and cost saving design. Technology is a key component to our culture and Amir is well versed in Building Information Modeling (BIM).

Robert has over 20+ years of experience in the building industry working for a variety of firms including structural, MEP, architectural, and building supplies. As a previous custom home builder, Robert has a working knowledge with architects, subcontractors, building officials, budgets and timelines. Robert has firsthand knowledge of the needs of our clients, translating into enhanced customer service, negotiations and rapport. These years of building relationships in the industry has unlocked doors for project negotiations, collaborations, and professional networking.

Ali has over 25 years of successful experience in structural engineering and project management. He has worked on a number of high profile developments in a variety of sectors with his main focus being on single/multifamily, commercial and retail projects. He is dedicated to customer service and takes a personal interest in ensuring projects are completed on time and within budget. His standards are high but it is in his ability to instill the same standards in his team of engineers, project managers and designers that makes Ali such an effective leader and asset to our clients.

Carrie Style
Director of Adiministration

Carrie has over 25 years of experience in business administration and human resources. Carrie earned her Bachelors’ degree from San Diego State University and a Master of Arts in Business Marketing from USC. As Director of Administration, she is at the helm of the entire administration of the company. She reviews and refines methods of accomplishing administrative functions, oversees payroll functions, accounts receivable, accounts payable, and vendor payments. Carrie has an ability to gel with the team, perform multiple tasks by properly prioritizing and organizing them, and strong communication skills.
Daniel Rivera, PE
Project Manager
Daniel brings over 5 years of experience as a structural engineer and project manager. He completed his engineering studies from the University of California, Los Angeles with a Master of Science emphasis in Structural Earthquake Engineering and holds a Professional Engineering license in California. Daniel is responsible for the preparation of construction documents, analysis of structural systems, and project management for various residential, industrial, and commercial projects. As a project manager, he spends time with his clients to determine effective solutions to cost savings and designs, resulting in the development of long-term client relationships.

Sarah Deyhimi, PE
Project Manager – Northern California

Sarah has over 20 years of experience in construction management, structural design and building codes compliance. With diverse experience in the structural design, building code compliance and construction, and as a Certified Accessibility Specialist and Certified Building Plans examiner, proficient in the fire, lifestyle, and accessibility portions of the Building Codes and Standards, Sarah is dedicated to bringing efficiency, practicality, and safety to the projects she takes part in. Sarah also takes extra effort to ensure customer needs are met in a timely fashion.

Company Mission Statement

Core Structure exists to provide value in our engineering from the start of design through completion of construction.