GCI
Linux Systems Admin Expert (TS/SCI with Poly Required)
GCI, Chantilly, Virginia, United States, 22021
Linux Systems Admin Expert (TS/SCI with Poly Required)
Founded in 1989, GCI is a premier Engineering and Analytics firm with a steadfast commitment to national security and intelligence. Specializing in Data Analytics, Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations, GCI embodies excellence, integrity, and professionalism.As a Linux Systems Administrator, a typical day will include the following duties:The Linux Systems Administrator position will apply expertise in the installation, configuration, operations, and maintenance of Linux-based architectures. Responsibilities include improving the stability and performance of the platform, maintaining and improving the security posture of the domain, continuous monitoring of system health, and troubleshooting issues that arise. The individual must be proficient in building, documenting, and providing Tier 3 engineering support.The position requires deep technical knowledge of systems, networks, and application security as well as a solid understanding of enterprise-level security frameworks, policies, processes, and standards. The candidate must have strong analytical skills for troubleshooting complex issues, attention to detail, and the ability to multitask in a fast-paced environment.KEY RESPONSIBILITIESProvide daily operational support for Linux operating systems and applications.Support virtual and physical infrastructure of servers running Rocky8 (and other RedHat derivatives) in dev, test, and production configurations.Support an infrastructure of different applications comprising end user applications, developer tools, and infrastructure support applications.Develop and maintain environments running in Amazon Web Services (AWS), Microsoft Azure, or Google Cloud Platform (GCP).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.Interact with users and evaluate vendor products.Review incidents to understand the root causes and ensure implementation of proper fixes.Collaborate with system administrators, engineers, and the client to ensure proper integration of applications.Configure system controls for Linux platforms, and remediate issues found by Continuous Monitoring activities.Work with the tech team to complete required maintenance and patching, DTOs, File Transfers.Provide security reports (e.g., Log files, Scans, etc.).Coordinate security waivers and approvals.EDUCATION AND EXPERIENCEBachelor's Degree in Computer Science, Information Technology, or other related technical discipline, or the equivalent combination of education, technical certifications, training, and work experience.REQUIRED QUALIFICATIONSExtensive experience with Red Hat or other derivative OS’ (CentOS, Rocky, Scientific Linux).Demonstrated experience with automating configuration and change management using scripting languages (Bash, Python, Ansible, etc.).Demonstrated experience with collaboration platforms, such as Atlassian Jira and Confluence.Demonstrated experience using local virtualization platforms (VMWare Workstation, Oracle VirtualBox).Demonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems.DESIRED SKILLSDemonstrated experience with configuration management languages (such as Ansible, Puppet, or Chef).Demonstrated experience with other Linux OS systems (Ubuntu, Debian, FreeBSD).Demonstrated experience in server builds using automated mechanisms.Demonstrated experience with VMWare ESXi infrastructure 6.x + vCenter server, host clustering with HA, DRS, replication.Knowledge of network engineering fundamentals and network design.Demonstrated experience with Microsoft Windows Server 2019.Demonstrated experience working with syslog applications such as Splunk.Demonstrated experience with Hadoop infrastructure and applications (HDFS, Hue, Impala, Oozie, Solr, Spark, Yarn, Zookeeper) a plus.Demonstrated experience with Cisco switches or Cisco Firepower Security Appliances a plus.Demonstrated experience with managing Elasticsearch on Linux systems.Certifications relating to IT Security (CISSP, GIAC, Security+) a plus.*A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.
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Founded in 1989, GCI is a premier Engineering and Analytics firm with a steadfast commitment to national security and intelligence. Specializing in Data Analytics, Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations, GCI embodies excellence, integrity, and professionalism.As a Linux Systems Administrator, a typical day will include the following duties:The Linux Systems Administrator position will apply expertise in the installation, configuration, operations, and maintenance of Linux-based architectures. Responsibilities include improving the stability and performance of the platform, maintaining and improving the security posture of the domain, continuous monitoring of system health, and troubleshooting issues that arise. The individual must be proficient in building, documenting, and providing Tier 3 engineering support.The position requires deep technical knowledge of systems, networks, and application security as well as a solid understanding of enterprise-level security frameworks, policies, processes, and standards. The candidate must have strong analytical skills for troubleshooting complex issues, attention to detail, and the ability to multitask in a fast-paced environment.KEY RESPONSIBILITIESProvide daily operational support for Linux operating systems and applications.Support virtual and physical infrastructure of servers running Rocky8 (and other RedHat derivatives) in dev, test, and production configurations.Support an infrastructure of different applications comprising end user applications, developer tools, and infrastructure support applications.Develop and maintain environments running in Amazon Web Services (AWS), Microsoft Azure, or Google Cloud Platform (GCP).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.Interact with users and evaluate vendor products.Review incidents to understand the root causes and ensure implementation of proper fixes.Collaborate with system administrators, engineers, and the client to ensure proper integration of applications.Configure system controls for Linux platforms, and remediate issues found by Continuous Monitoring activities.Work with the tech team to complete required maintenance and patching, DTOs, File Transfers.Provide security reports (e.g., Log files, Scans, etc.).Coordinate security waivers and approvals.EDUCATION AND EXPERIENCEBachelor's Degree in Computer Science, Information Technology, or other related technical discipline, or the equivalent combination of education, technical certifications, training, and work experience.REQUIRED QUALIFICATIONSExtensive experience with Red Hat or other derivative OS’ (CentOS, Rocky, Scientific Linux).Demonstrated experience with automating configuration and change management using scripting languages (Bash, Python, Ansible, etc.).Demonstrated experience with collaboration platforms, such as Atlassian Jira and Confluence.Demonstrated experience using local virtualization platforms (VMWare Workstation, Oracle VirtualBox).Demonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems.DESIRED SKILLSDemonstrated experience with configuration management languages (such as Ansible, Puppet, or Chef).Demonstrated experience with other Linux OS systems (Ubuntu, Debian, FreeBSD).Demonstrated experience in server builds using automated mechanisms.Demonstrated experience with VMWare ESXi infrastructure 6.x + vCenter server, host clustering with HA, DRS, replication.Knowledge of network engineering fundamentals and network design.Demonstrated experience with Microsoft Windows Server 2019.Demonstrated experience working with syslog applications such as Splunk.Demonstrated experience with Hadoop infrastructure and applications (HDFS, Hue, Impala, Oozie, Solr, Spark, Yarn, Zookeeper) a plus.Demonstrated experience with Cisco switches or Cisco Firepower Security Appliances a plus.Demonstrated experience with managing Elasticsearch on Linux systems.Certifications relating to IT Security (CISSP, GIAC, Security+) a plus.*A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.
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