Linux System Administrator, Level 3
Listed on 2026-10-28
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IT/Tech
Systems Administrator, Unix/Linux, IT Support, Cybersecurity
- Annapolis Junction, MD
- Full Time
What You Will Do
As a Linux System Administrator, Level 3 at Independent Software, you will support mission-critical systems in a complex, multi-environment infrastructure. You will work alongside a large team of System Administrators, System Engineers, Network Engineers, and government personnel to maintain, troubleshoot, and enhance Linux and Windows systems supporting both development and operational missions. This position involves hands-on system administration, Dev Ops support, system monitoring, and troubleshooting across multiple classified environments.
Key Responsibilities- Administer, maintain, and troubleshoot Linux and Windows servers, including physical and virtual systems.
- Support Dev Ops activities and sustainment of live, mission-critical systems.
- Monitor system health, investigate issues, and resolve incidents and service requests using JIRA.
- Maintain infrastructure services, including authentication, DNS, shared drives, home directories, and network communications.
- Support backend environments across multiple classification levels, including mission and operations users.
- Implement and maintain DISA STIG compliance and system security configurations.
- Manage storage systems, virtualization platforms, IP networking, and firewall configurations.
- Collaborate with System Administrators, System Engineers, Network Engineers, and government stakeholders to resolve technical issues and support mission requirements.
- Communicate system updates, technical challenges, and operational priorities across multiple teams and contracts.
As a Linux System Administrator, Level 3 at Independent Software, you will support mission-critical systems in a complex, multi-environment infrastructure. You will work alongside a large team of System Administrators, System Engineers, Network Engineers, and government personnel to maintain, troubleshoot, and enhance Linux and Windows systems supporting both development and operational missions. This position involves hands-on system administration, Dev Ops support, system monitoring, and troubleshooting across multiple classified environments.
Key Responsibilities- Administer, maintain, and troubleshoot Linux and Windows servers, including physical and virtual systems.
- Support Dev Ops activities and sustainment of live, mission-critical systems.
- Monitor system health, investigate issues, and resolve incidents and service requests using JIRA.
- Maintain infrastructure services, including authentication, DNS, shared drives, home directories, and network communications.
- Support backend environments across multiple classification levels, including mission and operations users.
- Implement and maintain DISA STIG compliance and system security configurations.
- Manage storage systems, virtualization platforms, IP networking, and firewall configurations.
- Collaborate with System Administrators, System Engineers, Network Engineers, and government stakeholders to resolve technical issues and support mission requirements.
- Communicate system updates, technical challenges, and operational priorities across multiple teams and contracts.
Skills and Qualifications
- Linux system administration experience appropriate to the position level.
- Solid experience with STE/STN environments and DISA STIG compliance on Linux systems.
- Storage management experience, including CFS/DFS and Net App.
- Experience with virtualization technologies such as Proxmox, Red Hat KVM, or VMware.
- Knowledge of IP networking and firewall administration.
- Experience working with containers or cloud environments.
- Experience with automation tools such as Ansible or Salt.
- Scripting experience using Bash, Python, or Perl.
- Familiarity with…
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