Meet Our Experts

Bill Callahan

Senior Environmental Compliance Specialist

Jenni Metzger

Project Analyst

George Marchenko, PLS

Senior Land Surveyor

Bryce Dilger, PLS

Senior Land Surveyor II

Rachel Hawthorne, PE

Director of Civil and Transportation Engineering

Matt Valez

Operations Manager

John Wallace, PE

Consulting Engineer

Wen Bin Sullivan, PE

Civil Engineer

Ethan Pence, PE

Civil Engineer

Kathy Redden

Executive Assistant

Olivia Williams

Associate Engineer

Frances Yu

Survey Technician

Zac Powell, PE

Associate Engineer

Ryan Burmaster

Survey Technician

Heather Johnson

Reception & Admin

Lee Faraca, PE

Civil Engineer

Paula Cappiello

Senior Accountant

Alexandra Cass

Associate Engineer

Sonil Kim

Assistant Resident Engineer

Josh Whipple

Senior Mechanical Designer

Sarah Huffman, PE

Civil Engineer

Erik Rutherford, PE

Senior Mechanical Engineer

Jenna Mitchell

Human Resources Manager

Bill Lindahl, PE

Senior Mechanical Engineer

Samar Saliba

Senior Accountant

Marcus Jackson

Senior Program Manager

Marco Castaneda, PLS

Professional Land Surveyor

Brandon Puccini

Associate Engineer

Daniel Herrera

Survey Technician

Nate Whitcare, PE

Senior Designer

Jorge Avila

Assistant Resident Engineer

Mark Madonna, PE

Survey Technician

Jamie Rogers

Marketing Coordinator

Nick Sine, LSIT

Survey Technician

Zachary Teske, PE

Director of Construction Management

Gabriela Mendoza

Accountant

Clayton Bradshaw, PE, PLS

Director of Surveying

Luz Garcia, PLS

Professional Land Surveyor

Cris Disarufino

Senior Civil Designer

Marilynn Connell

Landscape Designer

Matt Wilkins, PLA, ASLA, APA

Director of Landscape Architecture

Travis Vasquez, PE

Associate Engineer

Alex Murray, PE

Civil Engineer

Suzanne Baird, PLA, ASLA

Landscape Architect

David Jamesson, PLA

Landscape Architect

Valerie Huff, PE

Senior Civil Engineer

Lonnie Richardson

Senior Project Analyst

Alvaro Escobedo

Associate Engineer

Jamie Platz, PE

Senior Civil Engineer

JB Barrera

Assistant Resident Engineer

Glenn Rider

Senior Environmental Compliance Specialist

Jessica Escobar, PLA

Landscape Architect

Conner Kelly, PE

Associate Engineer

Tim Peterson

Project Analyst Compliance Inspector

Ralph Schell

Senior Civil Designer

Anthony Lehman

Assistant Resident Engineer

Tina Mayer, PE

Principal Civil Engineer

Michael Hausman, PE

Civil Engineer

Steven Tanaka, PE, CSI, CCS

Principal Civil Engineer

Bria diCicco

Marketing & Business Development Manager

Julie Rae Wilson

Controller

Greg Hulburd, PE, QSD/P

Director of Water Resources

Tony Scalise

Assistant Resident Engineer

Zachary Caipang, PE

Associate Engineer

Zach Markow, PE

Civil Engineer