Business Details
50+ Years
experience
Your Trusted Engineering Partner for Innovative Solutions
Siegfried Engineering has been a pillar of creativity, innovation, and community dedication for seven decades. Founded in 1955, we specialize in civil, structural, geotechnical, and landscape engineering, along with surveying and partnering services. Our multidisciplinary approach ensures seamless collaboration across disciplines, delivering practical, lasting solutions that blend technical expertise with creative problem-solving. With offices in Stockton, Sacramento, Modesto, and San Jose, we serve Northern and Central California, shaping communities through infrastructure, healthcare, education, and civic projects.Our team of seasoned professionals brings decades of collective experience, ensuring every project meets the highest standards of quality and reliability. We prioritize proactive project management, regulatory guidance, and site-specific design, leveraging advanced technology to reduce errors and enhance coordination. Recognized as one of San Joaquin Countys leading firms, we remain committed to advancing innovation, sustainability, and community impact through engineering excellence.
Services
Civil Engineering
Structural Engineering
Geotechnical Engineering
Landscape Architecture
Surveying Services
Public Works Projects
Infrastructure Development
Site Development
Design-Build Solutions
Partnering & Outreach
Details
- Year established: 1955
Highlights and features
- We offer 70 years of experience in multidisciplinary engineering solutions.
- Our AASHTO-accredited geotechnical lab ensures precise site analysis and testing.
- We prioritize proactive project management and regulatory compliance expertise.
- Our collaborative approach integrates civil, structural, and landscape design seamlessly.
- We maintain a legacy of shaping California communities with sustainable infrastructure.
Associations and certifications
- AASHTO
Services
Civil Engineering
Siegfried's civil engineering services focus on site development, infrastructure improvements, and complex engineering challenges. We collaborate with architects and public entities to create efficient, compliant solutions for transportation, water systems, and urban development. Our expertise ensures projects meet regulatory standards while addressing client-specific needs. With advanced technology and 70 years of experience, we deliver durable, functional infrastructure that supports community growth and sustainability.
Structural Engineering
Our structural engineering team balances design, budgets, and deadlines to create resilient structures. From new constructions to seismic retrofits, we apply technical precision and innovative strategies to ensure safety and longevity. Services include analysis of existing structures, material selection, and integration of mechanical systems. With expertise in commercial, healthcare, and educational facilities, we deliver solutions that meet evolving industry standards while prioritizing client goals and regulatory compliance across California.
Geotechnical Engineering
Siegfried's geotechnical services evaluate subsurface conditions to ensure project stability. We conduct soil investigations, lab testing, and foundation design, providing data-driven recommendations to mitigate risks. Our AASHTO-accredited lab supports accurate analysis for diverse markets, from public works to private developments. By understanding ground conditions, we optimize construction methods and materials, ensuring long-term performance while reducing costs and environmental impact through sustainable practices.
Landscape Architecture
We create functional, sustainable outdoor spaces that enhance user experiences and ecological health. Our landscape architecture integrates hardscapes, softscapes, and environmental considerations for public parks, commercial sites, and urban plazas. Collaborative stakeholder engagement ensures designs reflect community needs while meeting regulatory requirements. Projects emphasize durability, accessibility, and aesthetic appeal, fostering vibrant, enduring environments that connect people with nature.
Surveying Services
Our survey teams use GPS and TPS technology to deliver accurate data for project planning and construction. Services include boundary resolution, aerial surveys, and utility detection, ensuring informed decision-making. Direct communication between field crews and engineers maintains precision throughout the project lifecycle. We support infrastructure, real estate, and environmental projects with reliable spatial data, minimizing risks and ensuring compliance with legal and regulatory standards.
People
Paul Schneider
President, Managing Principal
Paul Schneider, PE, QSD/QSP, leads Siegfried's strategic direction with decades of civil engineering and project management expertise. He ensures client satisfaction through innovative solutions and operational excellence.
Adam Merrill
Vice President, Principal
Adam Merrill, PE, QSD/QSP, contributes extensive civil engineering knowledge, focusing on client relations and project execution. His leadership ensures adherence to quality standards and timely delivery.
Jim Willis
CFO, General Manager
Jim Willis oversees financial operations and office management, bringing strategic fiscal leadership to support Siegfried's growth and community-focused initiatives.
Bradford Quon
Survey Manager, Principal
Bradford Quon, PLS, manages survey operations, ensuring precise data collection and integration with engineering projects. His expertise enhances project accuracy and client confidence.
Bradford Quon
Survey Manager, Principal
Bradford Quon, PLS, manages survey operations, ensuring precise data collection and integration with engineering projects. His expertise enhances project accuracy and client confidence.
Questions
What engineering services does Siegfried offer?
Siegfried provides civil, structural, geotechnical, and landscape engineering, along with surveying and design-build solutions for infrastructure, healthcare, and civic projects.
How long has Siegfried Engineering been in operation?
Siegfried has delivered engineering solutions for 70 years, founded in 1955 and incorporated in 1992 as Siegfried Engineering, Inc.
What geographic areas does Siegfried serve?
We operate across Northern and Central California, with offices in Stockton, Sacramento, Modesto, and San Jose.
Does Siegfried handle public and private sector projects?
Yes, we collaborate with both public agencies and private entities on infrastructure, healthcare, education, and commercial developments.
What distinguishes Siegfried from other engineering firms?
Our multidisciplinary approach, AASHTO-accredited geotechnical lab, and 70-year legacy of community-focused innovation set us apart.
