Protecting Ontarians

Ontario Security

License #PPO 120850

“Marksman security has always been the leader in the security industry. Providing innovative, technologically advanced solutions to problems. Providing custom tailored, budget-minded programs to meet your security needs.” -Orlando A.

“I love working with Marksman. The environment is professional and they’re good team players that really care about your wellbeing and advancement.” -Zachary G.

“Fast growing and conscientious company. Treats employees as assets. The hiring and onboarding process is a piece of cake, and very professional.” -Salvador B.

Notify me of future Ontario security job openings!

What you’d be joining

Our culture is driven by Marksman’s core values:






Our core philosophy is our ability to deliver our commitment to:

Every Client

Every Location

Every Day

We do this through:


Empowering those closest to the customer through personal and professional development

Customer Confidence:

Providing the best possible service every day in every interaction

Marksman’s Growth Benefits:

Our customers, employees, and organization

Life in Ontario

Come explore Ontario, California – a sunny Haven of outdoor thrills. From hiking trails to splendid lakes, the staggering scenic beauty of San Bernardino County will make you fall in love.

Check out the fabulous outdoors at Cucamonga-Guasti Regional Park, breathtaking views of the San Gabriel Mountains, find unique artwork in the Ontario Airport Gallery, discover a great meal at one of the city’s many eateries, there’s something for everyone in the Inland Empire. Our security office is located in Ontario with security jobs spanning throughout Southern California. We serve a variety of verticals from residential to commercial.

Get in touch with our Ontario Location

3990 Concours St., Suite 410
Ontario, CA 91764
(909) 259-5057
License Number: PPO 120850

The Good Stuff: Benefits

Vacation/paid time off

Supplemental benefits

Comprehensive health & other insurance coverage

In-depth training

Free life insurance

Referral bonus program

Have a Question?

Our Leadership Team

Read Bio

Corey Benn

Corey Benn

Vice President

Experience, innovation and customized services help to distinguish us from other security providers in the regions we serve, leaving Marksman in a league of its own.

More about us