Business Details
We founded Arredondo Zepeda & Brunz in 2017 with a vision to redefine engineering and consulting through entrepreneurial thinking. Since our inception, we have grown from 100 employees to more than 2,600 professionals across over 120 offices nationwide. Our team combines deep technical experience with fresh perspectives to deliver infrastructure solutions that communities rely on daily. We specialize in water, wastewater, transportation, aviation, environmental, and civil engineering services for public and private clients. Our firm holds top industry rankings, including #48 on ENR's Top 500 Design Firms list and #86 on the Top 150 Global Design Firms list. We lead the water sector with top-15 rankings in water supply, wastewater treatment, sewer systems, and water transmission lines. Our CULTURE valuesClient Driven, Uniquely Nimble, Low Bureaucracy, Team Collaboration, Unlimited Opportunities, Relationship Focused, and Entrepreneurial Spiritguide every project.
We have earned recognition as a Newsweek Greatest Midsize Workplace and a Fast Company Best Workplace for Innovators in 2025. Our name, meaning diligent and responsible in Basque and superior in Gaelic, reflects the standards we uphold in every partnership. We empower our engineers, designers, and technical professionals to create practical, innovative solutions with genuine respect for communities. Our approach blends proven expertise with ambitious thinking to plan, design, deliver, and maintain critical infrastructure nationwide. We remain committed to building lasting impact through quality work, strong partnerships, and a people-first philosophy.
We have earned recognition as a Newsweek Greatest Midsize Workplace and a Fast Company Best Workplace for Innovators in 2025. Our name, meaning diligent and responsible in Basque and superior in Gaelic, reflects the standards we uphold in every partnership. We empower our engineers, designers, and technical professionals to create practical, innovative solutions with genuine respect for communities. Our approach blends proven expertise with ambitious thinking to plan, design, deliver, and maintain critical infrastructure nationwide. We remain committed to building lasting impact through quality work, strong partnerships, and a people-first philosophy.
Highlights and features
- We have grown to 2,600+ employees since 2017.
- Our firm ranks #48 on ENR Top 500 Design Firms.
- We hold top-15 rankings in water supply and wastewater.
- Our CULTURE values drive client-focused, entrepreneurial project delivery.
- We operate 120+ offices nationwide for local responsiveness.
Services
Water/Wastewater
We provide comprehensive water and wastewater engineering services including treatment plants, transmission lines, and sewer systems for municipal clients. Our top-10 ENR rankings in wastewater treatment and water supply demonstrate our technical leadership in the sector. We deliver resilient infrastructure solutions that ensure safe, reliable water resources for growing communities.
Transportation
We design and deliver transportation infrastructure projects including highways, interchanges, and transit systems for state and local agencies. Our expertise spans corridor reconstruction, design-build delivery, and traffic engineering to improve mobility and safety. We apply innovative approaches to create efficient, sustainable transportation networks that connect communities.
Aviation
We provide aviation engineering services for airport runway rehabilitation, terminal design, and airside infrastructure improvements nationwide. Our team has delivered complex projects like the Friedman Memorial Runway Rehabilitation with precision and regulatory compliance. We ensure airports meet evolving safety standards while minimizing operational disruption for travelers.
Environmental
We offer environmental consulting and engineering services including permitting, compliance, remediation, and sustainability planning for public and private clients. Our specialists navigate complex regulatory frameworks to deliver practical solutions that protect natural resources. We integrate environmental stewardship into every project phase to ensure long-term ecological responsibility.
Civil Services
We deliver civil engineering services for site development, grading, drainage, and utility infrastructure across diverse project types. Our engineers provide practical, cost-effective designs that meet local codes and client objectives efficiently. We support projects from concept through construction with responsive, collaborative technical expertise.
