Title: Cross Domain Administrator III Location: Washington, DC Clearance: TS/SCI with the ability to obtain and maintain a CI polygraph Responsibilities: * Perform systems administration of server systems connected to networks across multiple classification domains * Provide support to cross domain systems including day-to-day operations, monitoring, and problem resolution for all client/server/storage/network devices, etc. * Maintain integrity and security of cross domain system infrastructure and any processes related to these systems * Provide Tier 2 and Tier 3 problem identification, diagnosis, and resolution of issues * Configure and manage Unix operating systems; install/load operating system and application software * Isolate and resolve hardware and software problems involving cross domain applications, the operating system, the hardware, the communications infrastructure, or any combination thereof * Integrate new technologies into new and existing cross domain systems including the transition and migration of corporate production systems * Support business and mission application transition and on-boarding activities to enterprise hosted cross domain services and technologies * Support the deployment and patching of enterprise hosted cross domain services and components necessary to ensure a strong security posture Requirements: * Bachelor's degree in computer science or a related IT field * Six (6) years of experience managing Unix, Linux, and Windows infrastructure systems * DOD 8570 IAT II or higher certification * Current TS/SCI with the ability to obtain and maintain a CI polygraph