Senior Systems Administrator - Military veterans preferred

ManTech (


  full-time   employee

China Lake
United States

Secure our Nation, Ignite your Future

Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International Corporation, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement. Currently, ManTech is seeking a motivated, career and customer-oriented Senior Systems Administrator to join our team in China Lake Naval Base, CA

Responsibilities include, but are not limited to:

The Senior System Administrator will support, monitor, test, and troubleshoot hardware and software IA problems pertaining to the enclave environment in accordance with DoD 5205.07. Responsibilities include:

  • Oversee the operation and maintenance of an enclave of networks, servers, and client workstations.

  • Install, configure, maintain, and administer enclave-level networks, network devices, client machines and servers.

  • Perform flaw remediation.

  • Apply extensive knowledge of trusted systems and computing environments to engineer, implement, manage and maintain a multi-level security infrastructure using Solaris 11 with Trusted Extensions.

  • Implement and support application packages on the enclave.

  • Conduct systems analysis, summarizing the data collected into technical documents in a manner that is understood and usable by the decision maker.

  • Maintain enclave backups.

  • Apply demonstrated knowledge of network system management methods and network architecture and topology to plan, design, develop, manage, and enhance highly efficient network enclaves.

  • Apply extensive knowledge of cross-domain solutions to ensure the secure integration and operation of all enclave systems in accordance with security policies.

  • Establish, monitor, and evaluate effectiveness of logging procedures to meet enclave security requirements.

  • Write and maintain scripts to streamline the installation, configuration, maintenance, and administration of enclave-level networks, network devices, client machines, and servers, ensuring security of the enclave environment.

  • Direct and/or implement operational structures and processes to ensure an effective enclave cyber security program, to include boundary defense, incident detection and response, and key management.

  • Design, develop, implement. and maintain a production-representative test environment.

  • Provide direct and/or support to system developers regarding corrections of security problems.

  • Research, evaluate, and recommend technologies to enhance the security of the enclave.

Basic Qualifications

  • A DoD 8140/8570 Information Assurance Technical (IAT) Level III cybersecurity certification (CASP CE, CCNA Security, CISA, CISSP (or Associate), GCED or GCIH) is required.

  • If not held, must obtain and maintain Solaris 11 System Administration certification(s).

  • Demonstrated knowledge and experience managing and maintaining Multi-Level Systems (MLS) / Cross Domain Systems (CDS).

Security Clearance Requirements: Active Top Secret.

Physical Requirements

  • Must be able to remain in a stationary position 50%.

  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

  • Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.

  • Often positions self to maintain computers in the lab, including under the desks and in the server closet.

  • Frequently communicates with co-workers, management and customers, which may involve

  • delivering presentations. Must be able to exchange accurate information in these situations.

  • May be asked to move Audio/Visual or Computer equipment.

For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

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