Senior Linux Systems Administrator
About The Position
Computational Physics, Inc. (CPI) is hiring a Senior Linux System Administrator to support customers at the United States Naval Observatory (USNO) by deploying and maintaining its precise timing and astrometry networks. These networks support the production and dissemination of precise time, star-position, and Earth-rotation parameters to the Department of Defense, intelligence community, other U.S. Government users, and civilian and international users. Reliable, secure, maintainable, and manageable networks are crucial to distributing these data products, including those used for GPS navigation. The position is located at the U.S. Naval Observatory in Washington, D.C. Partial telework may be permitted in accordance with applicable Navy and Observatory guidance in effect at the time. U.S. citizenship is required for DoD contracts.
Requirements
- Seven or more years of industry experience.
- Five or more years of experience as a Linux System Administrator.
- Experience managing, configuring, and patching Red Hat Enterprise Linux (RHEL) systems.
- Experience applying STIGs and remediating vulnerabilities identified by ACAS or similar security tools.
- Experience supporting systems in virtualized environments, such as VMware vSphere.
- Experience integrating systems with monitoring and alerting platforms, such as SolarWinds or AIDE.
- Experience configuring and managing centralized authentication services, such as Active Directory, Centrify, or FreeIPA/IdM.
- Experience installing and maintaining endpoint security tools, such as Trellix/McAfee or Microsoft Defender for Endpoint.
- Experience configuring and managing centralized logging solutions, such as rsyslog or SIEM integrations.
- Experience administering Linux systems using configuration management tools, such as Ansible or Puppet.
- Bachelor's degree in IT, Computer Science, or a related field.
- CompTIA Security+ CE certification.
- Active Top Secret security clearance.
- U.S. citizenship is required for DoD contracts.
Nice To Haves
- Experience with DoD cybersecurity policies and frameworks.
- Strong troubleshooting skills across system, network, and storage layers.
- Experience configuring and troubleshooting SELinux.
- Experience managing RHEL lifecycle and patching using Red Hat Satellite or an equivalent tool.
- Experience with container technologies such as Podman or Docker.
- Strong understanding of Linux networking, including firewalld/nftables, DNS, routing, and VLANs.
- Experience with modern monitoring and observability platforms such as Prometheus, Grafana, or ELK.
- Experience managing Linux storage, including LVM, XFS, NFS, or multipath.
- Experience developing and maintaining Ansible playbooks and roles and using version control such as Git.
- Experience supporting compliance frameworks such as RMF, STIG checklists, and POA&M development.
Responsibilities
- Deploy and maintain the USNO's precise timing and astrometry networks.
- Manage, configure, and patch Red Hat Enterprise Linux systems.
- Apply STIGs and remediate vulnerabilities identified by ACAS or similar security tools.
- Support systems in virtualized environments such as VMware vSphere.
- Integrate systems with monitoring and alerting platforms.
- Configure and manage centralized authentication services and centralized logging solutions.
- Install and maintain endpoint security tools.
- Administer Linux systems using configuration management tools such as Ansible or Puppet.
Benefits
- Competitive salary and comprehensive benefits.
- Company stock through employee ownership.
- Professional development support, including conference attendance and certification training.
- 401(k), profit sharing, and an Employee Stock Ownership Plan (ESOP).
- Short-term and long-term disability insurance.
- Flexible schedule.
- Flexible spending account.
- Health, dental, and vision insurance.
- Life insurance.
- Paid time off.
- Parental leave.
- Tuition reimbursement.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
