Systems Administrator

2 days ago

Chantilly, Virginia, United States GCI, Inc. Full time
Job Title: Systems Administrator

GCI, Inc. is seeking a highly skilled Systems Administrator to join our team. As a key member of our IT department, you will be responsible for the installation, configuration, 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
  • 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
  • Works with tech team to complete required maintenance and patching, DTOs, File Transfers
  • Provides security reports (e.g. Log files, Scans, etc.)
  • Coordinates waivers and approvals

Requirements:

  • Bachelor's Degree in Computer Science, Information Technology, or other related technical discipline, or the equivalent combination of education, technical certifications, training, and work 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

Desired Skills:

  • 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

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