Posted: 08/14/2022


SAIC is looking for a Senior Linux Systems Administrator in our Middletown, RI location.

Specific responsibilities include:

  • Configuring, maintaining, patching, monitoring, diagnosing, and troubleshooting of Linux operating systems (RHEL) with basic knowledge of Windows operating systems
  • Provide infrastructure support for other IT-related services
  • Managing Linux customer access rights using Centrify
  • Maintains full awareness of security and compliance requirements, managing implementations of technology in support of those controls. (STIGs, POA&M, etc.)
  • Supports weekly scans, reviewing updates and patching for all client and server instances, works with IA to mitigate findings
  • Low level troubleshooting of smartcard and card reader issues
  • Design and document SOPs (Standard Operating Procedures) for system administration activities
  • Assist customers with the installation and updates of applications
  • Manage NFS exports
  • Build, configure and securely harden Linux workstation and servers


  • BS and 5 years experience.  4 additional years of experience in lieu of degree.
  • 5+ years of experience with Linux operating systems, primarily Red Hat Enterprise Linux (RHEL 7 and 8)
  • 5+ years of experience in an enterprise environment
  • Linux operating system certification such as RHCSA, Linux+ CE (minimum)
  • CISSP or Security+ CE (minimum) certification
  • Interim Secret Clearance with ability to obtain Secret


  • Experience deploying and managing server-based applications, services and processes in DOD or similar environments
  • Experience managing Yum Repos and patching for networked deployments of Linux operating systems
  • Experience managing Identity and Authentication solutions including Active Directory, PKI, and Multi-Factor Authentication
  • Experience implementing and maintaining systems governed under Risk Management Framework (RMF) implementations in secure environments
  • Experience reviewing, understanding, and implementing network and security protocols and methods (i.e. 802.1x, DHCP, VLANs, Firewalls, IPSEC/TLS, etc.)
  • Demonstrated ability to analyze, harden and validate compliance across hardware, software, and application layers implementations to satisfy requirements while maintaining functional/operational performance
  • Experience managing Satellite, Ansible Tower and syslog servers
  • Experience with scripting languages such as BASH, Perl and Python
  • Experience configuring firewalls, NFS exports, SELinux, fapolicyd