Team / Our people Meet Our Experts FilterIng by Service Civil & Transportation Engineering Construction Management Landscape Architecture Mechanical Engineering Public Works Administration and Permitting Surveying / GIS Solutions Water Resources Professional Support Services Our Principals Brad Brechwald, PE, PLS CEO, President Thomas Zehnder, PE Principal Jorge Aguilar, PE Principal Robert Miller, PE Principal Kari Wagner, PE Principal and Director of Water Resources Conner Kelly, PE Associate Engineer Suzanne Baird. PLA 6114 Landscape Architect Skye Thomas, PLS Senior Land Surveyor Alvaro Escobedo Associate Engineer Glenn Rider Senior Environmental Compliance Specialist Tim Peterson Project Analyst Compliance Inspector Tony Scalise Assistant Resident Engineer Nick Sine, LSIT Survey Technician Mark Madonna, PE Survey Technician John Wallace, PE Consulting Engineer Sarah Huffman, PE Civil Engineer Bryce Dilger, PLS Senior Land Surveyor II Steven Tanaka, PE, CSI, CCS Principal Civil Engineer Elvira Morla-Camacho, PE, QSD/P Senior Civil Engineer Ryan Burmaster Survey Technician Clayton Bradshaw, PE, PLS Director of Surveying Ethan Pence, PE Civil Engineer Zachary Caipang, EIT Associate Engineer Marco Castaneda, PLS Professional Land Surveyor Jenna Mitchell Human Resources Manager Ralph Schell Senior Civil Designer Nate Whitcare, PE Senior Designer Daniel Herrera Survey Technician I Bryan Childress, PE Senior Mechanical Engineer Zach Markow, PE Civil Engineer Bill Lindahl Senior Mechanical Engineer Valerie Huff, PE Senior Civil Engineer Gabriela Mendoza Marketing Coordinator Michael Hausman, PE Civil Engineer Cris Disarufino Senior Civil Designer Nancie L. Adams, PE Senior Civil Engineer George Marchenko, PLS Senior Land Surveyor Bill Callahan Senior Environmental Compliance Specialist Brett Hadley, PE, QSD/P Senior Civil Engineer Zac Powell, EIT Associate Engineer Julie Rae Wilson Controller Erik Rutherford, PE Senior Mechanical Engineer Wen Bin Sullivan, PE Civil Engineer Jenni Metzger Project Analyst Travis Vasquez, PE Associate Engineer Olivia Williams Associate Engineer Kathy Redden Executive Assistant Luz Garcia, PLS Professional Land Surveyor Craig A. Campbell, PE, PLS Consulting Engineer Rachel Hawthorne, PE Director of Civil and Transportation Engineering Matt Wilkins, PLA, ASLA, APA Director of Landscape Architecture Lonnie Richardson Senior Project Analyst Samar Saliba Accounting Alexandra Cass Associate Engineer Ann Sever, PLA 4038 Senior Landscape Architect Greg Hulburd, PE, QSD/P Civil Engineer Zachary Teske, PE Director of Construction Management Matt Valez Office Manager Paula Cappiello Senior Accountant Anthony Lehman Assistant Resident Engineer Josh Whipple Senior Mechanical Designer Want to make our communities better? Join Our Team More Of Our Projects