Linux Systems Administrator Expert
4 weeks ago
About the Role:
We are seeking a highly skilled Linux Systems Administrator Expert to join our team at General Dynamics Information Technology. As a key member of our IT team, you will be responsible for the installation, configuration, operations, and maintenance of both Windows- and Linux-based architectures.
Key Responsibilities:
* Provide daily operational support for Linux and Microsoft Windows operating systems and applications
* Support virtual and physical infrastructure of servers running CentOS in a dev, test, and production configuration
* Develop and maintain environments running in Amazon Web Services (AWS)
* 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; analyze, document and remediate incidents
* 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
Requirements:
* 10+ years of related experience
* 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 in server builds using automated mechanism
* Demonstrated experience with Ansible and/or Puppet
* Demonstrated experience with Ansible playbooks for virtual and physical instance provisioning, configuration management and patching and software development
* Demonstrated experience with building, upgrading and maintaining applications and services in an AWS account
* Demonstrated experience with code maintenance using Git, Gitlab, and/or Github
* Demonstrated experience with Atlassian Jira and Confluence
* Demonstrated experience with managing Elasticsearch on CentOS
* Demonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems
Preferred Qualifications:
* Certified Linux System Administrator
* Knowledge of network engineering fundamentals and network design
* Demonstrated experience with Microsoft Window Server versions 2008, 2016
* Demonstrated experience with SCCM, WDS, MS SQL server, Powershell, batch scripting
* Demonstrated experience working with syslog applications such as Splunk
* Demonstrated experience with NetApp NAS systems a plus
* Demonstrated experience with Hadoop infrastructure and applications (HDFS, Hue, Impala, Oozie, Solr, Spark, Yarn, Zookeeper) a plus
* Demonstrated experience with Cisco Nexus switches and Cisco Firepower Security Appliances a plus
* AWS Certification a plus
* ITIL Foundations Certification a plus
* Certifications relating to IT Security (CISSP, GIAC, Security+) a plus
Security Clearance: TS/SCI with Poly
Location: On Customer Site
About GDIT:
We are a global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation.
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