OGDEN — Outsourcing firm MarketStar Inc. announced Monday that the company will hire 250 sales professionals by the end of 2011 as part of a sales-team expansion on behalf of a leading Internet service company.

The team, which originally launched in January as a 10-person pilot program, will execute non-scripted sales initiatives nationwide as part of a new service offering.

The name of the client has not been released.

According to a news release, MarketStar will be expanding its presence in Ogden and add a new satellite facility in South Salt Lake to accommodate the expansion plan.

Ogden-based MarketStar was founded in 1988 by resident Alan Hall. It now has more than 3,500 employees worldwide and represents major corporations like Hewlett Packard, Cisco, Motorola and Sony.

Qualified applicants are invited to attend one of two job fairs scheduled for April 28 from 5 p.m. to 8 p.m. or April 30 from 11 a.m. to 4 p.m. Both sessions will be held at the Ogden Eccles Conference Center located at 2415 Washington Blvd.

Individuals can also apply online in advance of the job fair at www.marketstar.com/careers.