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