System Administrator III

Reflexive Concepts is seeking a skilled System Administrator III to join our team! Reflexive Concepts is looking for a System Administrator III to sustain a large-scale Linux computing environment supporting a critical mission. In this role you will install and maintain COTS/GOTS/FOSS software, handle day-to-day operations, monitoring, and problem resolution across the compute, network, memory, and storage components of the system. You will also maintain the security integrity of the environment, configure network components, and implement operating system enhancements that improve reliability and performance. Qualifications Active TS/SCI + FS PolygraphFifteen (15) years of experience as a Systems Administrator in programs and contracts of similar scope, type, and complexity, plus a Bachelor's degree in a technical discipline from an accredited college or university ORTwenty (20) years of experience as a Systems Administrator in programs and contracts of similar scope, type, and complexity, in lieu of a Bachelor's degree (five (5) years of additional Systems Administration experience may be substituted for the degree).Security+ certification Required Skills + Experience: Experience using the Linux CLIExperience developing scripts using Bash/PythonExperience in performing System Administration including installation, configuration, and support of COTS/GOTS/FOSS software in a large-scale Linux cluster environmentGeneral technical knowledge regarding compute, network, memory, and storage system componentsExperience with Red Hat Satellite systems management solutionFamiliarity using Splunk for ingesting, indexing, searching, monitoring, and analyzing big dataExperience with the sustainment and support of large Linux clusters including day-to-day operations, monitoring and problem resolutionExperience configuring and sustaining VMware ESXi/Virtualization environmentsExperience with IaC (Infrastructure as Code) principles and automation tools such as SaltStack and AnsibleExperience with corporate STE/STN security compliance policies and proceduresExperience using system monitoring tools such as HPE One View and NagiosExperience with containerization technologies such as Docker Desired Skills + Experience Experience with container orchestration technologies such as KubernetesExperience with distributed files systems such as Weka, CEPH, GPFS, and HDFSExperience with the Atlassian Suite of Tools such as Jira and Confluence