Senior UNIX/LINUX System Engineer

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. The Senior UNIX/LINUX System Engineer provides engineering and operational leadership for UNIX/Linux infrastructure, ensuring secure and reliable operation of Red Hat Linux-based systems across various environments.

Responsibilities:

• Perform system configuration, account administration, OS maintenance, and lifecycle support for physical and virtual servers
• Ensure platform availability and operational readiness across enterprise infrastructure environments
• Operate primarily in virtualized environments supporting SEC mission operations
• Lead administration, design, and implementation of RHEL server-based solutions aligned to SEC standards
• Provide technical leadership to the UNIX/Linux server team and manage operational priorities
• Build and maintain server solutions in virtualized environments and support integration with enterprise services
• Support onboarding and operationalization of new UNIX/Linux capabilities, including documentation and SOP/runbook updates
• Own incident management activities for UNIX/Linux infrastructure, including triage, escalation, and resolution
• Perform advanced troubleshooting of complex system issues across production and non-production environments
• Conduct root cause analysis and implement corrective actions to reduce recurrence and improve reliability
• Partner with enterprise operations stakeholders to restore service quickly and minimize mission impact
• Coordinate technical execution and service delivery for the UNIX/Linux server team
• Oversee operational activities to maintain stable and secure UNIX/Linux services
• Support monitoring, patching, and vulnerability remediation in accordance with contract and operational requirements
• Produce and communicate operational status, risk, and performance metrics for supported UNIX/Linux services
• Manage day-to-day administration of UNIX/Linux server infrastructure with primary focus on RHEL
• May require participation in on-call or surge support activities depending on operational needs

Requirements:

• This position is restricted to U.S. citizens only. Applicants must not hold dual citizenship with any other country to be eligible for work under this contract
• Ability to obtain and maintain SEC Public Trust (or higher, if required)
• Bachelor's degree and 8+ years of experience administering and managing servers/systems specializing in UNIX/Linux (additional years of experience may be considered in lieu of degree)
• Must possess a RHCSA (Red Hat Certified System Administrator) or equivalent
• Demonstrated experience leading UNIX/Linux server operations, incident management, and advanced troubleshooting in virtualized environments
• UNIX/Linux system administration with specialization in Red Hat Linux
• Day-to-day management of UNIX/Linux server infrastructure
• Leadership of UNIX/Linux server team activities across administration, design, and implementation
• Incident management and advanced troubleshooting of complex UNIX/Linux system issues
• Operations in primarily virtualized environments
• RHCE (Red Hat Certified Engineer) or higher Red Hat specialization
• Experience supporting high-performance or analytics-focused UNIX/Linux environments
• Experience with OpenShift/Kubernetes platforms and Linux workload modernization
• Experience supporting hybrid cloud server environments in AWS and/or Azure
• ITIL 4 Foundation (or equivalent) with demonstrated SLA/operations reporting experience
• Red Hat Certified Specialist in Ansible Automation
• VMware Certified Professional (VCP)