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