Systems Administrator Location: Springfield, VA 22150 US Citizenship is required. An active TS/SCI is required. An adjudicated Full Scope Polygraph is required prior to start. A customer-approved security certification is required: Security, SSCP, CISSP, or CASP. Position Overview We are seeking a mid- to senior-level Systems Administrator to support a classified environment in Springfield, Virginia. This is a hands-on position for an experienced administrator who can secure, operate, troublesh…