Gci - Chantilly, VA

posted about 1 month ago

Full-time
Chantilly, VA
Heavy and Civil Engineering Construction

About the position

The Systems Administrator at GCI is responsible for the installation, configuration, operation, and maintenance of both Windows and Linux-based systems. This role focuses on enhancing system stability and performance, maintaining security, and providing tier 3 engineering support. The position requires a deep technical understanding of systems, networks, and application security, along with strong analytical skills for troubleshooting complex issues in a fast-paced environment.

Responsibilities

  • Provide daily operational support for Linux and Microsoft Windows operating systems and applications.
  • Support virtual and physical infrastructure of servers running CentOS in various configurations.
  • Develop and maintain environments running in Amazon Web Services (AWS).
  • Maintain the integrity and security of systems by monitoring security feeds and dashboards.
  • 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 root causes and ensure proper fixes are implemented.
  • Collaborate with system administrators, engineers, and clients for proper application integration.
  • Work with tech team to complete required maintenance and patching, DTOs, and file transfers.
  • Provide security reports and coordinate waivers and approvals.

Requirements

  • Bachelor's Degree in Computer Science, Information Technology, or related technical discipline, or equivalent 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 mechanisms.
  • Demonstrated experience with Ansible and/or Puppet.
  • Demonstrated experience with Ansible playbooks for provisioning, configuration management, and patching.
  • Demonstrated experience with building, upgrading, and maintaining applications 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.

Nice-to-haves

  • Certified Linux System Administrator.
  • Knowledge of network engineering fundamentals and network design.
  • Demonstrated experience with Microsoft Windows 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.
  • Demonstrated experience with Hadoop infrastructure and applications.
  • Demonstrated experience with Cisco Nexus switches and Cisco Firepower Security Appliances.
  • AWS Certification.
  • ITIL Foundations Certification.
  • Certifications relating to IT Security (CISSP, GIAC, Security+).
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