SI International Inc. won a five-year, $6.9 million task order to provide human resources support services to the welcome center at the National Security Agency.

Under the task order, which consists of a nine-month base period and four one-year options, SI International will provide applicant processing and administrative functions for candidate communications and welcome center operations.

The company will perform the work at NSA’s offices in Fort Meade, Md., and at its own sensitive compartmented information facility where classified information is processed.

SI International of Reston, Va., specializes in IT and network solutions primarily for the federal government. The company employs more than 4,000 people and had 2004 revenue of $262.3 million.

The company ranks No. 49 on Washington Technology’s 2005 Top 100 list of federal prime contractors.