Senior Linux Systems Administrator

at  Mantech

SECURE OUR NATION, IGNITE YOUR FUTURE

Become an integral part of a diverse team that leads the world in the Mission, Cyber, and Intelligence Solutions group. At ManTech International Corporation, help protect our national security while working on innovative projects that offer opportunities for advancement.
ManTech is looking for a motivated, career and customer-oriented Senior Linux Systems Administrator to join our team in Arlington, VA.

BASIC QUALIFICATIONS:

• Bachelor’s degree in computer science, Information Technology, or a related field.
• 5+ years of experience as a Linux Systems Administrator, preferably in a senior or lead role.
• In-depth knowledge and experience with Linux operating systems, such as CentOS, Ubuntu, or Red Hat.
• Strong understanding of networking concepts, protocols, and services, including TCP/IP, DNS, DHCP, and VPN.
• Experience with virtualization technologies, such as VMware or KVM, and containerization platforms like Docker or Kubernetes.
• Proficiency in scripting languages, such as Bash or Python, for automation and task scheduling.
• Familiarity with configuration management tools, such as Ansible or Puppet, for managing and deploying infrastructure.
• Strong troubleshooting and problem-solving skills, with the ability to analyze and resolve complex technical issues.
• Excellent communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams.
• DoD 8570 IAT Level II Certification required Security+ CE
• RHEL certification obtained within 6 months of hire.
• Must be open to 10% annual travel and possess a valid U.S. Driver’s License.

SECURITY CLEARANCE REQUIREMENTS:

• Active TS clearance with SCI eligibility.

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.
  If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access http://www.mantech.com/careers/Pages/careers.aspx as a result of your disability. To request an accommodation please click careers@mantech.com and provide your name and contact information

• Design, deploy, and maintain Linux-based systems and server, including installation, configuration, and troubleshooting.
• Monitor system performance, identify bottlenecks, and propose and implement solutions for optimization.
• Perform regular system maintenance tasks, such as patching, firmware updates, and backups, to ensure systems integrity and availability.
• Implement and maintain security measures, including access controls, firewalls, and intrusion detection systems, to protect against unauthorized access and security threats.
• Collaborate with cross-functional teams to design and implement scalable and reliable infrastructure solutions to support business needs.
• Troubleshoot and resolve complex and network issues, working closely with vendors and other IT teams as necessary.
• Automate routine tasks and processes using scripting languages, such as Bash or Python, to improve efficiency and productivity.
• Provide technical guidance and mentorship to junior team members, sharing knowledge and best practices.
• Stay up to date with the latest industry trends, technologies, and best practices in Linux systems administration.
• Participate in on-call rotation and respond to system emergencies outside of regular business hours, ensuring system availability and minimizing downtime.