Fannie Mae is moving closer to hiring IBM as a technology vendor to handle certain data processing chores for the GSE, according to two former Fannie officials. However, as Inside The GSEs went to press, details about what exactly IBM might do for the secondary market giant was unclear.“It’s a huge contract, involving many employees and facilities,” said one source. “It’s broad-based.” But it’s also unclear whether the contract has anything to do with the single MBS platform, a project being overseen by Fannie’s regulator, the Federal Housing Finance Agency.