Established in New York in 1990, Open Systems Technologies is one of the largest privately held staffing companies in North America, with 13 offices in the United States, and three internationally. OST have experienced organic growth over the past 25 years. To date, we have about 1,800+ consultants on billing and our billing revenue is about $300MM annually. Through our brands of Open Systems Technologies, OS Financial, OS Legal, OS Government Services, and OS Global we strive for continued expansion and excellence in the staffing industry.