Linux System Administrator – Mid Level (TS/SCI) (RHEL/Linux)

Location: Full-time on-site in a SCIF at the hirify.global facility in Herndon, Virginia, United States. U.S. citizenship and an active U.S. Government Top Secret/SCI clearance are required; willingness and ability to obtain a CI polygraph is required.

Salary: $102,000–$136,000–$149,600 annually for the Washington, DC metropolitan area; other states use location-specific market ranges.

Company

hirify.global develops spatial intelligence capabilities and maintains software applications backed by self-managed private cloud and big-data infrastructure exceeding 10 petabytes.

What you will do

• Monitor and respond to hardware and software outages across the platform.
• Support OpenStack cloud tenants and users with troubleshooting and service requests.
• Implement cybersecurity remediations in collaboration with the cybersecurity team.
• Deploy and upgrade applications and integrate new hardware into multiple compute clusters.
• Review and update operational procedures and documentation.
• Contribute to hardware planning for system recapitalization and platform expansion.

Requirements

• U.S. citizenship, an active Top Secret/SCI clearance, and willingness and ability to obtain a CI polygraph.
• Full-time on-site work in a SCIF in Herndon, VA.
• 8+ years of demonstrated Linux system administration experience, or 5 years with a bachelor's degree in Computer Science, using RHEL-based distributions such as Red Hat Enterprise Linux, Rocky Linux, or AlmaLinux.
• Experience administering physical servers and virtual machines, including Linux virtualization platforms such as OpenStack, Proxmox, or VMware.
• Experience administering commercial cloud environments supporting Linux workloads, including AWS, Azure, or Google Cloud Platform.
• A DoD 8570/8140 cybersecurity workforce certification, such as CompTIA Security+, ISC2 SSCP, or GIAC GSEC.
• Experience with remote server access tools such as PuTTY, MobaXTerm, or Windows RDP.
• Tier 3 support experience with mature troubleshooting skills in complex computing environments.
• Hands-on experience with endpoint security tools such as Tenable Nessus, Trellix, Flexera, Carbon Black, or ArcSight/CRIBL, and with GitLab for workflow management and source code configuration control.
• Ability to self-start, respond to ad-hoc requests, support tasks including upgrades, patching, monitoring, and R&D, collaborate across the technology stack, balance team and independent work, and communicate and organize effectively.

Nice to have

• Linux certifications such as RHCSA, RHCE, LPIC-1/2/3, or LFCS.
• Bachelor's degree in Computer Science, Information Systems, Software Engineering, or a related field; a master's degree may count as up to two years of experience based on qualifications.
• Rocky Linux 8, 9, and 10 administration experience and experience applying DISA STIG security settings to RHEL-based systems.
• Python scripting and tool or application development experience.
• Experience with non-RHEL distributions such as Debian, Ubuntu, Kali, or Alpine.
• GitLab CI/CD pipeline configuration; Docker or Podman; Packer; OpenStack administration, deployment, and upgrades; and CEPH administration, deployment, and upgrades.
• Kubernetes or Nomad orchestration experience.
• Experience deploying, upgrading, and maintaining big-data stacks including Hadoop, HDFS, YARN, and Elasticsearch.
• Experience with RMF, ATO processes, NIST 800-53 controls, SAST tools such as GitLab SAST, SonarQube, or Fortify, and GPU virtualization.

Culture & Benefits

• Collaborative infrastructure, software development, DevOps, and cybersecurity environment.
• Prototyping and frequent iterative feedback support rapid mission-focused delivery.
• Benefits include a 401(k) with company match, mental health resources, student loan repayment assistance, adoption reimbursement, and pet insurance.

Hiring process

• The application window remains open for three days from the posting date and may close earlier once a qualified candidate is identified.
• Clearance status must be verified before employment in cleared roles.