Senior Systems Administrator (Linux) TS/SCI w/ Poly

Clearance Level
Top Secret SCI + Polygraph
Systems Engineering
McLean, Virginia

REQ#: RQ72885

Travel Required: Less than 10%
Requisition Type: Regular

Provide daily operational support for Linux and Microsoft Windows operating systems and applications Support a virtual infrastructure of 700 servers running CentOS in a dev, test, and production configuration, and support an infrastructure of 60 different applications comprising of end user applications, developer tools and infrastructure support applications.  Maintain the current virtual machine infrastructure, provide support to the remote users, and complete tasking to create new VMs Maintain the integrity and security of systems by monitoring security feeds and dashboards in support of Continuous Monitoring activities Develop and maintain standards and procedures for applications across a complex computing infrastructure Develop and maintain comprehensive documentation Monitor application and operating system performance and analyze and document problems Develop and oversee implementation of testing strategies and document the results Leverage scripting and system automation tools Maintain current knowledge of relevant technologies Research and recommend hardware and software, coordinate installation, and provide backup recovery Interact with users and evaluate vendor products Review problems to understand the root causes of issues and ensure implementation of proper fixes Collaborate with system administrators, engineers, and the client to ensure proper integration of applications


Bachelors Degree in Computer Science, Information Technology, or other related technical discipline, or the equivalent combination of education, technical certifications, training, and work experience.


Certified Linux System Administrator Extensive experience with Redhat and/or Centos Demonstrated experience with VMWare ESXi infrastructure 6.x + vCenter server, host clustering with HA, DRS, replication Demonstrated experience with Docker,  Elasticsearch,  Kafka, and basic Linux skills for latest versions of CentOS. Demonstrated experience in server builds using automated mechanism Demonstrated experience with Ansible playbooks for virtual and physical instance provisioning, configuration management and patching and software development Demonstrated experience with Ansible with Rundeck Demonstrated experience with Jenkins Demonstrated experience deploying Docker engines in virtualized platforms for containerization of multiple apps Demonstrated experience with Atlassian Jira and SolarWinds Demonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems


Demonstrated experience with Microsoft Window Server versions 2008, 2012, 2016, and 2019 Demonstrated experience with SCCM, WDS, MS SQL server, Exchange, Powershell, batch scripting Demonstrated experience with SCOM and MIM Demonstrated experience working with syslog applications such as Splunk ITIL Foundations Certification a plus Certifications relating to IT Security (CISSP, GIAC, Security+) a plus

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

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.