Job Fair1 April 17, 2018 from 10 a.m. - 11 a.m. in Park Ridge, IL! Call to schedule your in person interview! 708.385.3300. Guardian Security Services is looking to hire security officers for the Northwest Suburbs! Premier Locations! Fantastic Wages! For a list of openings in your area, please log onto: www.guardiansecurityinc.com.