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