Senior Linux Systems Administrator

Allegis Group - McLean, VA

Full-time - Senior

McLean, VA

10,001+ employees

Administrative and Support Services

About the position

The Senior Linux Systems Administrator will be responsible for the installation, configuration, migration, and maintenance of approximately 700 Red Hat Enterprise Linux (RHEL) virtual servers. This role requires a strong understanding of RHEL OS, excellent troubleshooting skills, and experience with automation concepts. The candidate will gather customer requirements, perform server builds, and ensure operational compliance while providing day-to-day support and maintenance.

Responsibilities

• Gather customer requirements and complete new server builds per operational procedures.
• Perform server decommissions per operational procedures.
• Perform day-to-day operational maintenance, customer support, and program compliance.
• Execute yum/dnf installation and updates of Red Hat packages.
• Remediation of IAVM and ACAS vulnerability reports.
• Understand and audit DISA STIG checklists, including usage of automated SCAP scans.
• Execute Ansible automation content to audit and remediate compliance.
• Define technical details within milestones for Plan of Action & Milestones (POA&Ms).
• Effectively communicate with customer and implement resolution for operational compliance.
• Assess, suggest, and implement system performance improvements.
• Modify and establish storage allocation, including NFS.
• Understand, troubleshoot, and improve functionality within SELinux, AIDE, fapolicyd, firewalld, Red Hat Identity Management (RHIdM), Red Hat Satellite, and Trellix products.
• Conduct root cause analysis and articulate to customer.
• Assist customers with migrating functionality to new servers with latest RHEL OS.
• Participate in on-call rotation to support outages and occasional after-hours maintenance.
• Create and improve documented Standard Operation Procedures.

Requirements

• 9+ years of experience in Red Hat Enterprise Linux systems administration.
• Active Security+ CE certification and Secret Clearance required.
• BA/BS with 9+ years IT experience or MA/MS with 5+ years IT experience; relevant experience may be considered in lieu of a degree.
• Linux environmental certificate (i.e. Linux+, RHCSA, or similar) required.

Nice-to-haves

• Experience with GitLab
• Scripting skills
• Knowledge of Active Directory
• Systems engineering experience

Benefits

• Medical, dental & vision
• Critical Illness, Accident, and Hospital insurance
• 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)