Structural Engineers in Long Beach, CA

Altair is an enterprise software company (now acquired by Siemens) that develops AI-powered solutions for simulation, high-performance computing, data science and engineering across industries such as aerospace, automotive, electronics, energy and manufacturing; Altair offers platforms and products like Altair One, HPCWorks, HyperWorks and RapidMiner to enable simulation-driven design, cloud & hybrid computing, digital twins, generative AI and data analytics, and the company supports customers with consulting, training and a global services ecosystem to accelerate product development and data-driven decision making.

B.A. Sims Engineering, Inc. is a structural and civil engineering consulting firm based in Long Beach, California, with an international presence licensed in multiple U.S. states and Canadian provinces. The company provides fast response times and exceptional service across a broad range of engineering projects. Their expertise includes structural design for new commercial and residential construction, remodels, seismic retrofitting, structural steel components, bridges, and public art projects. In civil and construction design, they offer services such as temporary shoring, grading and drainage plans, erosion control, traffic control plan review, slope stability analysis, retaining walls, and tunneling. The company focuses on delivering practical, value-engineered solutions tailored to client needs.

Castillo Engineering is a Long Beach-based engineering firm dedicated to delivering high-quality services with responsiveness and quick turnaround to ensure customer satisfaction. The company serves a diverse range of sectors including residential, commercial, multifamily, and institutional projects. Castillo Engineering emphasizes quality workmanship and client-focused service, operating with a commitment to meeting the unique needs of each project. The firm is located in Long Beach, California, and offers professional engineering solutions tailored to the local community and beyond.

Greystone Engineering Group Inc. is a leading civil and structural engineering firm based in Los Angeles, specializing in delivering high-quality engineering solutions for residential and commercial projects of all sizes. The company offers a comprehensive range of services including structural design, foundation design, seismic analysis, grading and drainage plans, erosion control, and street improvement plans. Greystone Engineering is committed to safety, sustainability, and functionality, providing tailored and reliable solutions with meticulous attention to detail. Serving the greater Los Angeles area, the firm prides itself on exceeding client expectations through precision, efficiency, and superior quality, creating lasting engineering solutions that stand the test of time.

JN Engineering Inc. is a full-service structural engineering consulting firm based in West Los Angeles, providing expertise in structural design, seismic evaluation and retrofitting, soft story retrofits, tenant improvements, balcony inspections, and construction consulting. The company serves residential, commercial, and industrial clients, working across a range of construction types including steel, concrete, timber, and masonry. Founded and led by experienced engineers Joseph Mina, P.E., and Nabil Mallak, M.S., S.E., JN Engineering is recognized for delivering structural solutions that balance safety, cost-effectiveness, and architectural intent. The firm is known for its collaborative approach, working closely with architects, contractors, and clients from preliminary design through construction, ensuring projects are completed on budget and ahead of schedule. With professional engineering licenses in California and membership in organizations such as SEAOC and ASCE, the company prides itself on raising the standard of service in the engineering industry while achieving innovative and reliable results for a wide array of building projects.

JRS Engineering & Design is a Long Beach-based firm providing residential and light commercial engineering design services throughout Southern California. The company specializes in a wide range of services including load-bearing wall determination and removal, home additions and remodels, second-story additions, custom home design, carport and garage design, garage conversions, structural home inspections, accessory dwelling units (ADUs), foundation design, Title 24 energy calculations, deck and pergola design, and stamped structural calculations. JRS Engineering & Design offers personalized service starting with a consultation and site visit, followed by detailed design and permitting support, and ongoing assistance during construction. The firm emphasizes clear communication, transparent pricing, and client support throughout the project lifecycle.

KAD Engineers & Surveyors is a licensed engineering and surveying firm with offices in Orange County and San Diego that brings over 40 years of combined experience to residential and commercial projects; KAD Engineers & Surveyors specializes in land surveying, civil engineering design and geotechnical engineering services including construction staking, boundary determination, topographic and elevation certification, setback and building height certification, ADU surveying, grading and drainage design, water and sewer plans, and soils testing, and the company supports public and private sector clients with code-compliant, field-tested solutions.

PCX Aerosystems is a diversified global supplier specializing in precision machining and manufacturing of flight-critical mechanical assemblies, transmissions, gearboxes, shafts, housings, structural airframe assemblies, composite wrapped fuel tanks, landing gear, high-pressure propellant tanks, and specialty composites. The company serves the aerospace and maritime industries, providing advanced components for defense rotorcraft and naval defense platforms. With decades of industry experience, PCX Aerosystems is committed to delivering exceptional quality, reliability, and on-time delivery while continuously innovating to meet the rigorous demands of leading OEMs. The company operates multiple locations across the United States and maintains a strong focus on solving critical manufacturing needs with forward-thinking solutions.

KPFF is a multidisciplinary engineering firm that exists to engineer opportunities that have a positive impact on people, places, and the planet. The company provides structural, civil, transportation, surveying and mapping, protective design, and heavy civil engineering services across its regional offices, partnering with architects, developers, contractors and public agencies to deliver complex projects and infrastructure. KPFF emphasizes a people-centered culture that supports professional development, sustainability, and collaborative problem-solving while working on a wide range of building and infrastructure projects KPFF homepage and regional service descriptions such as the Los Angeles office overview KPFF Los Angeles.

Lee & Lee Structural Engineering Inc. is a California-based structural consulting firm founded in 1989, with over 35 years of experience delivering safe, efficient, and cost-effective structural engineering solutions. The company specializes in designing wood, steel, concrete, masonry, and tilt-up systems for a wide range of projects including residential complexes, commercial buildings, hotels, factories, religious facilities, and adaptive reuse developments. Lee & Lee combines engineering fundamentals with modern design tools such as ETABS, SAFE, SAP2000, and AutoCAD to ensure projects meet the highest standards of safety, constructibility, and regulatory compliance. The company is committed to personalized service, clear communication, and practical solutions that support clients from concept through construction, making it a trusted partner in structural engineering across California and beyond.