Senior Systems Administrator, USG Program

Astranis•San Francisco, CA

About The Position

The Senior Systems Administrator – JWICS/CWAN is responsible for the secure administration, operation, maintenance, configuration, and troubleshooting of information systems operating within a TS/SCI classified environment, including JWICS, CWAN, and associated National Security Systems (NSS). The role provides hands-on technical support for classified servers, workstations, network devices, applications, and supporting infrastructure. The administrator ensures systems are securely configured, maintained, monitored, and operated in accordance with applicable Dow, Intelligence Community (IC), customer, RMF, cybersecurity, COMSEC, and classified-information security requirements. The position works closely with the ISSM, COMSEC, Industrial Security, Physical Security, and government/customer technical representatives to maintain the security and operational availability of classified systems.

Requirements

Current CompTIA Security+ certification, or equivalent certification, in compliance with DoD Directive 8140.
Experience supporting classified system accreditation and cybersecurity compliance activities.

Nice To Haves

SCI and/or Special Access Program (SAP) experience.
Previous COMSEC Custodian or COMSEC Manager experience.
Experience supporting DCSA Security Reviews and government inspections.
Experience with eMASS, ACAS, Nessus, SCAP, or similar cybersecurity tools.
CISSP, CISM, or equivalent cybersecurity certification.
Government COMSEC training and certification.
Experience with AWS or Azure Classified Cloud.

Responsibilities

Administer, configure, maintain, and troubleshoot JWICS, CWAN, and associated TS/SCI systems.
Perform system administration on classified servers, workstations, network devices, and supporting infrastructure.
Install and maintain authorized operating systems, applications, patches, and security updates.
Manage user accounts, permissions, privileged accounts, system services, and system resources.
Troubleshoot hardware, software, authentication, network connectivity, and system-performance issues.
Support system upgrades, technology refreshes, hardware replacement, and system decommissioning.
Maintain system availability while ensuring required security controls remain in place.
Implement and maintain approved security configurations and Security Technical Implementation Guides (STIGs).
Support vulnerability identification, remediation, patch management, and configuration compliance.
Maintain system security logs and support security monitoring and audit requirements.
Identify and immediately report security incidents, unauthorized activity, vulnerabilities, or anomalous behavior.
Enforce least privilege, separation of duties, and controlled administrative access.
Work with the ISSM, COMSEC, Industrial Security, Physical Security, and government/customer technical representatives to support security and system availability.