Siegfried

Siegfried Siegfried—Celebrating 70 years of Shaping Communities Through Engineering and Design Excellence.

Founded in 1955, Siegfried is the largest multidisciplinary design and engineering firm headquartered in San Joaquin County that provides civil engineering, structural engineering, geotechnical engineering, landscape architecture, surveying, and grant writing and public outreach. Having expanded to locations in Modesto, Sacramento, San Jose, and Truckee, Siegfried is recognized as one of the forem

ost professional services firms in Northern and Central California, as measured by our clients, our employees, and our community. We solve our clients’ toughest challenges making complex projects not only manageable but truly enjoyable. Our innovative approach and technical expertise continues to shape the success of communities and businesses in each of our practice areas and beyond. Over the years, it has become clear that having multiple disciplines working closely together under one roof benefits both the process and the product; streamlining costs while maximizing function. Our teams are cross trained so they understand the complexities of the project not just as individual parts, but as a whole.

This isn’t just a schoolyard — it’s a place for students to learn, explore, connect, and grow.As May comes to a close, w...
05/28/2026

This isn’t just a schoolyard — it’s a place for students to learn, explore, connect, and grow.

As May comes to a close, we’re celebrating Living Schoolyards Month and the role outdoor spaces can play in supporting student well-being and discovery.

Through our work with Oakland Unified School District and the New Joseph Bonnheim Campus Plan with Sacramento City Unified School District, Siegfried is proud to help shape school environments that support learning beyond the classroom.

Congratulations to Scott Soares on earning his Professional Land Surveyor license!This exciting milestone reflects Scott...
05/26/2026

Congratulations to Scott Soares on earning his Professional Land Surveyor license!

This exciting milestone reflects Scott’s years of dedication, experience, and commitment to the surveying profession. Join us in celebrating his achievement and read more about Scott’s journey on our website.

https://siegfriedeng.com/congratulations-scott-soares-pls/

Siegfried honors and remembers the brave men and women who made the ultimate sacrifice for our country this Memorial Day...
05/25/2026

Siegfried honors and remembers the brave men and women who made the ultimate sacrifice for our country this Memorial Day.

In observance of the holiday, our office will be closed and will resume normal operating hours tomorrow, May 26, at 8:00 AM.

Siegfried participated in this year’s Structural Engineers Association of Central California (SEAOCC) Golf Tournament al...
05/20/2026

Siegfried participated in this year’s Structural Engineers Association of Central California (SEAOCC) Golf Tournament alongside fellow engineers and industry partners.

It was a great chance to spend time with the local engineering community, make new connections, and support SEAOCC’s ongoing work to advance the structural engineering profession throughout Central California.

Thanks to SEAOCC for bringing everyone together!

Small spaces can make a big difference.Siegfried provided survey and landscape architecture services for the Modesto Gos...
05/19/2026

Small spaces can make a big difference.

Siegfried provided survey and landscape architecture services for the Modesto Gospel Mission’s Women’s New Life Program Residence courtyard, helping reimagine an underused area into a safe, welcoming outdoor space for the women and children who call it home.

The courtyard is now a place for play, homework, meals, fresh air, and connection. It includes a small play structure, tables and seating, shade, low-maintenance plants, pollinator-friendly greenery, donated trees, and natural wood elements that add warmth and texture.

Designed with everyday life in mind, this space brings new opportunities for gathering, learning, playing, and simply spending time outside.

Going red for women’s heart health ❤️ We’re proud to support the American Heart Association’s Go Red Bruncheon and its m...
05/16/2026

Going red for women’s heart health ❤️

We’re proud to support the American Heart Association’s Go Red Bruncheon and its mission to advance awareness and raise funds for women’s heart health. Thank you to our team members who joined this meaningful event.

Last month, Siegfried attended the ribbon cutting for San José City College’s new Career Education Complex.The project i...
05/11/2026

Last month, Siegfried attended the ribbon cutting for San José City College’s new Career Education Complex.

The project includes an 85,000 SF career education building and renovations to a 40,000 SF existing building, creating space for classrooms, computer labs, offices, social areas, and food service. Siegfried supported the project with civil engineering, surveying, and landscape architecture services.

We’re excited to see this new complex come to life and begin serving SJCC students, faculty, and the broader campus community.

Investing in our team means creating opportunities for growth, leadership, and recognition while celebrating the people ...
05/07/2026

Investing in our team means creating opportunities for growth, leadership, and recognition while celebrating the people who are shaping the future of our industry.

Join us in congratulating Alejandro Aguilera, who was recognized as an Emerging Professional at the CalGeo Annual Conference in Palm Springs for his ReMi presentation last November. We’re proud to have you on the Siegfried team!

Siegfried is hiring!We’re looking for civil team members to join us in our Stockton, Sacramento, and Truckee locations. ...
05/05/2026

Siegfried is hiring!

We’re looking for civil team members to join us in our Stockton, Sacramento, and Truckee locations. Whether you’re early in your career or bring years of experience, we’d love to connect with you.

Apply today at siegfriedeng.com/careers.

Big news for Siegfried! We’re expanding into Truckee with the opening of our new office and the addition of Seth Warren,...
02/09/2026

Big news for Siegfried! We’re expanding into Truckee with the opening of our new office and the addition of Seth Warren, PE, QSD, as Civil Principal—strengthening our regional leadership and long-term commitment to partnership.

Read more:

Siegfried has expanded to the Truckee region with the opening of a new Truckee office and the addition of new civil engineering leadership.

Address

3428 Brookside Road
Stockton, CA
95219

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+12099432021

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