✦ Luna Orbit — System Administration

Systems Administrator w TS/SCI CI Poly

at ActioNet

📍 Remote, US Onsite 💰 $130K – $190K USD / year Posted April 02, 2026
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Position Details

Salary $130K – $190K USD / year
Type Full-Time
Experience senior
Exp. Years 5+ years
Education Bachelor of Science in Information Systems, Information Technology, Computer Science, or related field
Category System Administration

About this role

System Administrator role providing hands-on support in a classified DoD/IC environment, including building, configuring, securing, and maintaining Windows and Linux systems and networks; heavy emphasis on IaC, security, and on-site support.

Key Responsibilities

  • Install, configure, secure, and maintain Windows and Linux systems
  • Build systems from bare metal and manage authentication services
  • Perform regular security monitoring and backups
  • Configure and manage DoD/IC authentication services
  • Create, maintain documentation and tutorials

Technical Overview

Stack includes Windows/Linux administration, DoD IC authentication services, IaC (Terraform, Ansible, Puppet), scripting (Bash, PowerShell), Kubernetes, Red Hat 7/8, ACAS, Rancher, Grafana, Cloud Security Gateway; Jira/Confluence for documentation; TS/SCI with CI poly required.

Ideal Candidate

The ideal candidate is a senior system administrator with 5+ years building and maintaining Windows/Linux environments in a DoD/IC setting, strong IaC and automation skills, and an active TS/SCI clearance with CI poly. They should excel in on-site, highly secure environments and be able to document and share technical details.

Must-Have Skills

Bachelor of Science in Information SystemsInformation TechnologyComputer Scienceor related field5+ years of experience with implementation and understanding of Engineering principles in a professional environmentExperience maintainingconfiguringoperating and troubleshooting complex electronic computer interface systems and network equipmentKnowledge of U.S. Government computersnetworksand securityPast experience administering server-side technology and networked computing systems.Ability to prioritize a wide range of workloads with critical deadlines.Familiarity with DNS / DHCP / Kickstart / LDAP / Kubernetes / Red Hat 7&8 / Windows 10 / ACAS / Rancher / Grafana / Cloud Security GatewayMaintain and create system documentation.Ability to surge hours worked through eventsAble to create simple scripts (i.e. powershell or bash)Ability to automate installationconfigurationand provisioning using IaC tools like TerraformAnsiblePuppetand Chef.Ability to configure and manage operating systemsapplicationsnetworksand network equipmentActive TS//SCI clearance with CI polygraphU.S. Citizenship is requiredSecurity Clearance: active within 5yr

Nice-to-Have Skills

Experience with HadoopHBase/AccumuloSpark and KafkaExperience with PuppetAnsibleTerraformBashPowershelland Python toolsLeadership SkillsAbility to surge hours during events

Tools & Platforms

JiraConfluenceGitLabTerraformAnsiblePuppetBashPowershellPythonLDAPKubernetesRed Hat 7Red Hat 8ACASRancherGrafanaCloud Security Gateway

Required Skills

Bachelor of Science in Information SystemsInformation TechnologyComputer Scienceor related field; 5+ years experience with engineering principles; experience maintainingconfiguringoperating and troubleshooting complex systems and network equipment; knowledge of U.S. Government computersnetworksand security; administer server-side technology and networked computing systems; prioritize workloads with deadlines; DNS / DHCP / Kickstart / LDAP / Kubernetes / Red Hat 7&8 / Windows 10 / ACAS / Rancher / Grafana / Cloud Security Gateway; maintain system documentation; script (powershell or bash); IaC tools TerraformAnsiblePuppetChef; configure and manage operating systemsappsnetworks; TS/SCI clearance with CI poly; US citizenship

Hard Skills

WindowsLinuxDOD and IC authentication servicesbare metal system buildsPuppetAnsibleTerraformBashPowershellPythonLDAPKubernetesRed Hat 7&8Windows 10ACASRancherGrafanaCloud Security GatewayJiraConfluence

Soft Skills

Strong customer engagementLeadershipExcellent interpersonal skillsAbility to prioritize workloadsOrganized with attention to detailAgile management experienceAbility to document and share knowledge

Certifications

Required

IAT Level 1 (CompTIA Security + and OS/Computing Environment certification)

Industry & Role

Industry Defense
Job Function Provide hands-on system administration in a classified environment
Role Subtype Windows Sysadmin
Tech Domains Windows Server, Linux, Kubernetes, Terraform, Ansible, Puppet, Bash, PowerShell, Python

Keywords for Your Resume

system administratorwindowslinuxdoDic authentication servicesterraformansiblepuppetbashpowershellpythonldapkubernetesred hat 7red hat 8acasranchergrafanacloud security gatewayjiraconfluencets//SCIci polyon-siteu.s. citizenship

Deal Breakers

No active TS/SCI clearance, Not a U.S. citizen, No CI poly, Lack of DoD/IC security experience

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