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