Our Team

Our employees are our greatest asset

KOA presents our clients with talented & diverse multi-disciplinary teams in order to create vibrant and dynamic neighborhoods. We are wholly invested in our employees, our company, and the communities we serve!

Leaders with a Vision

Jimmy Lin, PE


Spirit Animal: Mouse (I was born on the year of the Rat)
Karaoke Go-To: I Left My Heart in San Francisco
Favorite Movie: The Godfather
Claim to Fame Moment: Being elected to the city council of Leawood, Kansas

Be fearful when others are greedy and greedy when others are fearful.

Warren Buffett

Juan Gutierrez, CMA

Chief Financial Officer

Favorite Way to Spend a Sunny Day: At the pool
Newest Hobby: Bike Riding
Secret Talent: Latin Style Dance
Spirit Animal: Dog

The greatest amount of wasted time is the time not getting started.

Dawson Trotman

Min Zhou, PE

Director of OC Operations | Deputy CEO

Favorite Way to Spend a Weekend: Hiking, yoga, and afternoon tea with friends
Newest Hobby: Planting/Gardening
Favorite Word: Smile
Favorite Project: 3rd & Broadway Cycle Track Study & Design, Long Beach, CA

A person who feels appreciated will always do more than what is expected.


Joel Falter

Principal | Director of Planning

Favorite Way to Spend a Sunny Day: Out and about
Spirit Animal: Elephant
Favorite Word: Please
Newest Hobby: Making coffee

Everything will be okay in the end. If it’s not okay, it’s not the end.

John Lennon

Stephen Bise, PE

VP | Director of LA Operations

Favorite Way to Spend a Sunny Day: Playing with my kids at the park
Secret Talent: Juggling
Favorite Treat: Anything chocolate
Favorite Project: Foothill Blvd Master Plan, Claremont, CA

Luck is what happens when preparation meets opportunity.


Ming Guan, PE, TE

VP | Director of IE Operations

Newest Hobby: Coding with my kids and the Dash & Dot Robot
Secret Talent: Remembering everyone’s birthdays
Guilty Pleasure: Ice Cream
Favorite Thing About California: Sunshine

To be a good professional engineer, always start to study late for exams. Because it teaches you how to manage time and tackle emergencies.

Bill Gates

Charlie Schwinger, PE, TE, PTOE

Director of SD Operations

Favorite Thing About California: Mountains, Ocean, Clouds, Sun
Favorite Movie: While You Were Sleeping
What Did You Want To Be When You Were 6 Years Old: Superman
Favorite Project: Escondido Creek Bikeway Missing Link, Escondido, CA

Asking dumb questions is easier than correcting dumb mistakes.


Chuck Stephan, PE

VP | Director of CM Division

Favorite Thing About California: The amazing geography and biodiversity
What Did You Want to be When You Were 6 Years Old: Seven years old
Favorite Vacation Location: Anywhere worth exploring
Favorite Word: Bumptious

Join Our Team

Our employees are our greatest asset

At KOA we know the success of our clients’ projects is determined by the skills and abilities of our people, and we are dedicated to their professional and technical development.

Our Careers