Staff Linux Systems Administrator

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 Staff Linux Systems Administrator to join our team in Dallas, TX.

Responsibilities include, but are not limited to:

• Provide technical support for the software, hardware, wired network infrastructure, and system security for a Linux High Performance Computing (HPC) environment.

• Plan, coordinate, and install software applications and hardware in a distributed Linux platform.

• Provide system administration and configuration of specialized mission applications and software

• Optimize the functionality and performance of hardware and software systems.

• Ensure availability, integrity, efficiency, and reliability of servers, workstations, and data storage systems (Lustre, Bright Cluster).

• Implement and maintain backup and disaster recovery plans and capabilities for all critical mission systems.

• Develop and maintain system administration standard operating procedures, technical guides, and instructions.

• Install, support, and maintain server operating systems and software (Google Tensorflow, PostgreSQL).

• Plan for authorized service interruptions and outages.

• Respond to unexpected or unauthorized service interruptions and outages.

• Diagnose software and hardware failures to resolution.

• Implement and ensure security preventive measures are fully functioning.

• Monitor and enhance system performance.

• Test operating system and software upgrades, patches, and hot fixes before they are applied to the operational systems.

• Create and test backups of data, provide data cleansing services, verify data integrity, implement access controls.

• Assist developers of data exposure services with engagement of the database.

• Implement and maintain backup and disaster recovery capabilities for all identified critical mission system.

Basic Qualifications:

• Bachelor's degree in STEM discipline (e.g., Computer Science, Electrical Engineering, Mathematics, Information Technology) & seven (2+) years experience.

• DoD 8570 IAT II Level Certification (e.g., Security+ CE, CCNA-Security, CySA+l, GICSP, GSEC, CND, SSCP).

• DoD 8570 Red Hat Certified System Administrator (RHCSA) or higher within 6 months of hire.

• Previous experience with:

  • Lustre in distributed computing environments

  • Bright Cluster Management toolset

  • Securing and hardening Linux systems to meet RMF controls

  • VMware vSphere 6 and up

  • Scripting (BASH, Python, Perl)

  • CUDA, TensorFlow, similar toolsets

Security Clearance Requirements:

• Top Secret clearance with SCI eligibility adjudicated within the past 6 years. 

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