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