Systems Administrator 3 (QKS - 093)

SageCor Solutions•Annapolis Junction, MD

About The Position

SageCor Solutions is hiring a Systems Administrator 3 to support mission and operations users across three backend environments at different classification levels. Supported systems include Linux and Windows physical servers and virtual machines. The role involves monitoring systems, reviewing mission-critical updates and issues, and working through JIRA tickets. The team also supports desktops and services including authentication, DNS, shared drives, home directories, and communications between systems. This is a large team that performs both DevOps work and live-systems sustainment. The administrator will coordinate with system administrators, systems engineers, and network engineers across multiple contracts, as well as respond to direct customer tasking and leadership. An active TS/SCI clearance with polygraph is required.

Requirements

  • Active TS/SCI clearance with polygraph.
  • Linux administration experience meeting the years required for the applicable labor category (LCAT).
  • Solid experience performing compliance work on Linux systems.
  • Storage management experience, such as CFS/DFS or NetApp.
  • Virtualization experience, such as Proxmox, Red Hat KVM, or VMware.
  • IP networking and firewall experience.
  • Some experience with containers or cloud environments.
  • Ability to communicate and collaborate across large teams and with customers and leadership.

Nice To Haves

  • Experience with automation tools such as Ansible or Salt.
  • Scripting experience with Bash, Python, or Perl.
  • Experience with backup tools such as Rubrik or NetBackup.
  • Hyper-converged infrastructure experience, such as Harvester, Nutanix, or Cisco HyperFlex.

Responsibilities

  • Monitor supported systems and review email and team communications for mission-critical updates and urgent issues.
  • Work JIRA tickets for Linux and Windows physical systems and virtual machines.
  • Support backend environments at three different classification levels, including mission and operations users and desktops.
  • Support authentication, DNS, shared drives, home directories, and communications between systems.
  • Perform DevOps work and sustain live systems.
  • Coordinate with system administrators, systems engineers, network engineers, customers, and leadership across multiple contracts.
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service