Multi-Domain System Administrator

Multi-Domain Systems Administrator

LOCATION: On Site - Kirtland AFB, NM

JOB STATUS: Full-time

CLEARANCE: Active TS/SCI

CERTIFICATIONS: DoD 8570/8140 IAT Level II or III

Astrion is seeking a versatile and mission-focused Multi-Domain Systems Administrator to support the Air Force Research Laboratory's (AFRL) Research & Development Integrated Space Experiments (RISE) contract at Kirtland AFB, NM.

In this role, you will deliver end-to-end system, cloud, cyber, and network administration across secure DoD environments. This position supports day-to-day mission operations, user enablement, cloud configuration, infrastructure sustainment, and system troubleshooting for multiple AFRL program environments.

Required Qualifications

• Top Secret clearance with SCI eligibility (required at start).

• Bachelor's degree in IT, Computer Science, Cybersecurity, Systems Administration, or a related technical field.

• DoD 8570/8140 IAT Level II or III certification (e.g., Security+, CySA+, CCNA Security, CASP+, or CISSP)

• 5+ years of experience as a Systems Administrator, Cloud Administrator, Network Administrator, or similar role supporting DoD or mission-critical systems.

• Hands-on administration experience with Red Hat Enterprise Linux (RHEL) including user management, patching, service configuration, and security hardening.

• Experience with AWS WorkSpaces administration, Active Directory/Cloud DC, IAM, and identity lifecycle management.

• Working knowledge of networking fundamentals, access control lists (ACLs), DNS, DHCP, routing, and troubleshooting connectivity issues.

• Experience with cyber hygiene requirements such as MFA enforcement, PKI/certificate compliance, password policies, and cybersecurity training validation.

• Strong communication skills with the ability to coordinate across multidisciplinary engineering, cyber, and program management groups.

Preferred Qualifications

• Experience supporting AFRL, USSF, or other DoD programs.

• Experience with AWS Directory Services or hybrid cloud/On-Prem + AWS environments.

• Familiarity with eMASS for updating certificates, commenting on findings, or assisting with user-level RMF tasks.

• Experience managing Atlassian tools such as Confluence, Jira, and Bitbucket.

• Working knowledge of STIG/SRG-based hardening for Windows and RHEL systems.

• Basic scripting or automation skills (PowerShell, Bash, Python).

• Familiarity with log monitoring platforms (e.g., Splunk, ELK, Graylog).

Responsibilities

• Administer accounts, onboarding/offboarding, MFA, PKI/CAC, and certificate updates across multiple secure environments.

• Provision, configure, and maintain AWS Workspaces, AWS Directory Service, and cloud-integrated identity services.

• Perform Windows and RHEL Linux system administration, including patching, service configuration, troubleshooting, and baseline security hardening.

• Manage Active Directory (Cloud DC) objects and enforce least-privilege IAM policies.

• Troubleshoot system, network, and cloud-access issues for on-prem and AWS environments.

• Support network tasks including ACL updates, firewall coordination, static IP assignments, and general connectivity troubleshooting.

• Maintain IT infrastructure equipment such as UPS systems, network devices, and firewall configuration backups.

• Follow configuration management and change-control processes for system updates and infrastructure modifications.

• Maintain documentation (access lists, configurations, system inventories) and collaborate with engineering, cyber, and PM teams to ensure operational readiness.

CJ