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Linux Engineer/ SME: TS/SCI clearance with Poly

Job Description

Manages the functionality and efficiency of a group of computers running on one or more operating systems


The Infrastructure Team Member will be responsible for the implementation, support and maintenance of all aspects of the project’s Linux infrastructure. Project infrastructure includes virtual and physical servers and software resources. Activities include but are not limited to:


  • Monitor health and capacity of and troubleshoot Linux system resources using Nagios and iLO or iDRAC and VMware host console.
  • Assist multiple development teams with recurring operations and maintenance activities (host creation, system performance issues, H/W issues, general Linux administration support, Centrify/AD support, etc.)
  • Coordinating and escorting vendors into the Data Center to replace failed hardware components on Linux systems
  • Project based development and implementation of new Linux hardware and software capabilities (Security enhancements, Central Logging, Resource Monitoring and Notification, Dev/Ops Automation, etc.)
  • Participating in and conducting applicable accreditation support (scans, automation, auditing, etc.) of Linux systems
  • Providing general Linux system administration guidance and support to multiple development teams (disk management, account creation, design reviews, etc.)


The successful candidate must be able to work well both in a team setting and individually on project based tasks and have direct experience in the following:

System Administration

  • Prior experience as a Unix/Linux Systems Administrator of Linux, preferably RHEL/CentOS (installation, configuration, upgrades, troubleshooting)
  • Prior experience developing Puppet modules for server builds (Kickstart), and maintenance automation
    • Prior experience integrating automation with TFTP, DHCP and DNS.
  • Prior experience with Centrify and Active Directory integration and management of Linux groups, accounts and servers
  • Prior experience with one or more scripting tools: Puppet, Shell, Perl/CGI, Python.


  • Managing and monitoring Linux server resources in a VMWare/VSphere environment
  • Building and maintaining all Linux Virtual Machines

Server/Resource Automation

  • Experience with automation tools, such as Puppet and Ansible, preferably Puppet, CGI/Perl and Python

Hardware Experience

  • Direct experience with, including hardware maintenance, firmware updates to HP DL Series Servers, Dell PowerEdge R630/730 Servers and iLOM/iDRAC usage

Optional Experience

  • Prior experience with SQL querying of a relational database, such as MySQL
  • Prior experience with Nutanix and HPCC technologies
  • Prior experience with Python and Ansible automation of system administration and configuration tasks
  • Prior experience setting up Docker clusters using Swarm and or Kubernetes
  • Prior experience with HP Apollo 4000 and 2000 systems architectures
  • Prior experience with git for Infrastructure code management

10-15 years experience






For more than 50 years, General Dynamics Information Technology has served as a trusted provider of information technology, systems engineering, training and professional services to customers across federal, state, and local governments, and in the commercial sector. Over 40,000 GDIT professionals deliver enterprise solutions, manage mission-critical IT programs and provide mission support services worldwide. GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.






Company Name:
Security Clearance:
Top Secret / SCI + Poly
Mclean, Virginia
United States
Not Specified
Job Number:

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