About Us

DSI originated in 1969 when Sheriff A.B. Clark started a security company in response to a request from the construction company building the nearby Farley Nuclear Plant.  As the company’s reputation grew for providing quality security services DSI began to grow, opening an eventual 20 branch offices.  A.B. Clark began DSI with the belief that his company could fill a void with a dependable, competent team of people. DSI now consists of thousands of carefully selected and highly trained security personnel.

DSI is still a family-owned and managed company, led by A.B.’s son Alan, Chairman of the Board, along with his wife Marty, President. Alan and Marty’s three children all work with DSI in various capacities as well. DSI has also benefited from its well-rounded, experienced, and professional management staff that have helped in building DSI’s reputation as a leader in the security industry. Following sound business practices through the years DSI has been able to maintain a high quality of clientele. Many of our clients have experimented with less expensive security suppliers prior to choosing DSI, but have ultimately chosen the more personal way of doing business DSI provides.

The listing to the right contains all available positions at our company.
You may filter your selection by job title, description or location (state and zip).

Clicking on the appropriate column will allow you to filter by that type to narrow down your choices.
To view the details of a particular job simply click on the desired job row,
the full requirements will be available for you to review.

By selecting a job and choosing “apply for job” above the list, you will be able to begin the application process.
You can also apply when you are viewing the details of a particular job.
Once you’ve completed the application process you will be directed back to this list if you wish to apply for another job.