Role: Information Systems Security Officer (ISSO) Clearance Requirement: TS/SCI Work Location: Onsite, Washington, DC metro area (primary location with occasional travel to nearby locations as required) Role Overview We are seeking a hands‑on Information Systems Security Officer (ISSO) to support the accreditation, operation, and continuous security of mission‑critical information systems in a government environment. This role is well suited for individuals with backgrounds in systems administr…