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 Bryan Childress, PE Principal and Director of Mechanical Engineering Samar Saliba Senior Accountant Josh Whipple Senior Mechanical Designer Zachary Caipang, PE Associate Engineer Cris Disarufino Senior Civil Designer Bryce Dilger, PLS Senior Land Surveyor II Ryan Burmaster Survey Technician Alexandra Cass Associate Engineer Ann Sever, PLA Senior Landscape Architect Bill Lindahl, PE Senior Mechanical Engineer Ethan Pence, PE Civil Engineer Matt Valez Office Manager Lonnie Richardson Senior Project Analyst Jenni Metzger Project Analyst Valerie Huff, PE Senior Civil Engineer Paula Cappiello Senior Accountant Luz Garcia, PLS Professional Land Surveyor Sarah Huffman, PE Civil Engineer Rachel Hawthorne, PE Director of Civil and Transportation Engineering Zach Markow, PE Civil Engineer Erik Rutherford, PE Senior Mechanical Engineer Jessica Escobar, PLA Landscape Architect Zac Powell, PE Associate Engineer Jamie Platz, PE Senior Civil Engineer JB Barrera Assistant Resident Engineer Jenna Mitchell Human Resources Manager Travis Vasquez, PE Associate Engineer Ralph Schell Senior Civil Designer George Marchenko, PLS Senior Land Surveyor Tim Peterson Project Analyst Compliance Inspector Lee Faraca, PE Civil Engineer Julie Rae Wilson Controller Sonil Kim Assistant Resident Engineer Gabriela Mendoza Accountant Jorge Avila Assistant Resident Engineer Olivia Williams Associate Engineer Suzanne Baird, PLA, ASLA Landscape Architect Marco Castaneda, PLS Professional Land Surveyor Alvaro Escobedo Associate Engineer Marcus Jackson Senior Program Manager Glenn Rider Senior Environmental Compliance Specialist Brett Hadley, PE, QSD/P Senior Civil Engineer Bill Callahan Senior Environmental Compliance Specialist Zachary Teske, PE Director of Construction Management Nate Whitcare, PE Senior Designer Nick Sine, LSIT Survey Technician Ioanna Bruno Landscape Designer Matt Wilkins, PLA, ASLA, APA Director of Landscape Architecture Conner Kelly, PE Associate Engineer Heather Johnson Reception & Admin Bria diCicco Marketing & Business Development Manager Jamie Rogers Marketing Coordinator Tina Mayer, PE Principal Civil Engineer Tony Scalise Assistant Resident Engineer Clayton Bradshaw, PE, PLS Director of Surveying Michael Hausman, PE Civil Engineer Greg Hulburd, PE, QSD/P Director of Water Resources Daniel Herrera Survey Technician Kathy Redden Executive Assistant John Wallace, PE Consulting Engineer Alex Murray, PE Civil Engineer Skye Thomas, PLS Senior Land Surveyor Mark Madonna, PE Survey Technician Anthony Lehman Assistant Resident Engineer Wen Bin Sullivan, PE Civil Engineer Steven Tanaka, PE, CSI, CCS Principal Civil Engineer Marilynn Connell Landscape Designer Brandon Puccini Associate Engineer Want to make our communities better? Join Our Team More Of Our Projects