Business Details
50+ Years
experience
Trusted Engineering Solutions for 70 Years
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, offering multidisciplinary solutions that blend technical precision with creative problem-solving. Our collaborative approach ensures projects meet the unique needs of clients while adhering to regulatory standards and sustainability principles. With offices in Stockton, Sacramento, Modesto, and San Jose, we serve Northern and Central California, delivering infrastructure, healthcare, education, and civic projects that shape communities. Our team of licensed professionals, including LEED Accredited Professionals and AASHTO-certified geotechnical experts, brings decades of experience to every challenge.We prioritize proactive project management, leveraging advanced technology to ensure accuracy and efficiency from concept to completion. Recognized for our role in transformative developments like the UC Davis Health Complex and Stockton Heat Ice Arena, we remain committed to excellence, innovation, and community impact. Our 70-year legacy reflects a dedication to solving complex challenges with practical, lasting solutions that enhance functionality and usability. As we look to the future, we continue to invest in sustainable design, cutting-edge tools, and partnerships that drive long-term value for clients and communities alike.
Services
Civil Engineering
Structural Engineering
Geotechnical Engineering
Landscape Architecture
Surveying
Public Works
Infrastructure Development
Design-Build Solutions
Sustainable Design
Partnering & Outreach
Details
- Year established: 1955
Highlights and features
- We offer 70 years of experience in civil and structural engineering with a legacy of transformative projects.
- Our multidisciplinary team integrates civil, structural, and geotechnical expertise for holistic solutions.
- AASHTO-accredited geotechnical laboratory ensures precision in subsurface analysis and foundation design.
- LEED Accredited Professionals prioritize sustainable and environmentally responsible design practices.
- Proven track record in complex infrastructure projects, including healthcare, education, and public works.
Associations and certifications
- AASHTO
Services
Civil Engineering
Siegfried Engineering delivers comprehensive civil engineering solutions, including site development, transportation systems, and water resource management. Our expertise ensures compliance with regulatory standards while optimizing functionality and sustainability. With advanced tools and a focus on community needs, we transform complex challenges into resilient infrastructure projects.
Structural Engineering
Our structural engineering services encompass new constructions, seismic retrofits, and renovation projects. By balancing design, budgets, and deadlines, we create safe, durable structures tailored to client requirements. From healthcare facilities to educational institutions, our solutions prioritize performance and longevity.
Geotechnical Engineering
Siegfried's geotechnical team conducts soil investigations, lab testing, and foundation design to ensure project stability. AASHTO-accredited facilities support precise subsurface analysis, mitigating risks and enhancing performance for infrastructure, commercial, and public works projects.
Landscape Architecture
We create functional, sustainable landscapes that enhance user experiences and ecological health. Our designs integrate hardscapes, green spaces, and climate-responsive elements for public parks, campuses, and mixed-use developments across California.
Surveying
Advanced GPS and TPS technology enable precise surveying for boundary resolution, construction layouts, and utility detection. Our seamless integration with engineering teams ensures accurate data-driven decisions, supporting efficient project execution from planning to completion.
People
Paul Schneider
President, Managing Principal
Paul Schneider leads Siegfried Engineering with a focus on strategic growth and client satisfaction. With decades of experience in civil engineering, he oversees project delivery and firm operations, ensuring alignment with the company's legacy of innovation and community impact.
Adam Merrill
Vice President, Principal
Adam Merrill contributes expertise in structural engineering and project management. As a Principal, he drives technical excellence and client collaboration, ensuring complex projects meet rigorous standards while delivering lasting value to communities.
Bradford Quon
Survey Manager, Principal
Bradford Quon oversees surveying operations, leveraging advanced technology for precise site data. His leadership ensures accurate mapping and boundary resolution, supporting efficient project execution across Siegfried's diverse engineering disciplines.
Thais Del Castillo
Landscape Manager, Principal
Thais Del Castillo leads landscape architecture initiatives, blending art and science to create sustainable outdoor spaces. Her work emphasizes ecological health and community engagement, reflecting Siegfried's commitment to innovative, user-centric design.
Bradley Quon
Survey Manager, Principal
Bradley Quon directs surveying projects, ensuring accuracy and reliability through cutting-edge tools. His expertise supports infrastructure and development projects, maintaining Siegfried's reputation for precision and technical excellence.
Questions
What engineering services does Siegfried offer?
Siegfried provides civil, structural, geotechnical, landscape architecture, and surveying services for infrastructure, healthcare, education, and public works projects.
How long has Siegfried been in business?
Siegfried has delivered engineering solutions for 70 years, founded in 1955 in Stockton, California.
Which areas does Siegfried serve?
Siegfried operates in Northern and Central California, with offices in Stockton, Sacramento, Modesto, and San Jose.
What industries does Siegfried specialize in?
Siegfried serves commercial, government, healthcare, education, transportation, and residential markets with tailored engineering solutions.
Does Siegfried handle sustainable design projects?
Yes, Siegfried integrates sustainable practices through LEED Accredited Professionals and eco-conscious engineering strategies.
