Wells Fargo Home Mortgage, the nation's biggest home lender, said Thursday it will open a new mortgage operations center in Irving and add hundreds of jobs to its area workforce.The new operations center is set to open next month at 250 E. John Carpenter Fwy. Together with positions that could be filled at an existing facility in Bedford, Wells Fargo expects to make more than 450 new hires.Wells Fargo already has a mortgage fulfillment operations center in Bedford that employs 116. It said applicants for the Irving site can also be considered for similar roles in Bedford.Wells Fargo will hold a job fair Jan. 23-24 from 10 a.m. to 8 p.m. at the Hyatt Regency Dallas, 300 Reunion Blvd. in downtown Dallas."All jobs will require candidates to have mortgage loan underwriting experience, and to apply online at www.wellsfargo.com/careers/ to be considered for a role," the company said.Wells Fargo, the nation's fourth-largest bank by assets, made $524 billion in home mortgages last year, up 47 percent from 2011, according to Mortgage Daily in Dallas. Wells Fargo made about 30 percent of all home loans in the first nine months of 2012.