Senior Linux Systems Administrator - Team Lead

If you're passionate about Linux administration, cloud technologies, automation, and supporting mission-critical enterprise infrastructure, we'd love to hear from you.

We are seeking an experienced Senior Linux Systems Administrator to join our enterprise infrastructure team supporting large-scale production environments. This role is responsible for providing operational support for both on-premises and cloud-based (AWS and Azure) data centers, ensuring the availability, security, and performance of mission-critical systems.

The successful candidate will be responsible for system image creation, server provisioning, patch management, reporting, documentation and SOP development, application integration, scripting and automation, advanced system configuration, troubleshooting, and production support while meeting established Service Level Agreements (SLAs). This position also requires participation in a 24/7 on-call rotation.

Work Schedule: Monday-Friday, 8:00 AM - 5:00 PM ET, with participation in a 24/7 on-call schedule.

Bachelor's degree with 8 years of relevant experience, or 12 years of experience with a high school diploma.
• Extensive experience administering Linux systems in large-scale production environments.
• Proven ability to manage escalated incidents, critical production issues, and major infrastructure changes.
• Experience with reporting, performance dashboards, capacity planning, vendor management, and technical documentation.
• Experience designing, migrating, and upgrading enterprise Linux infrastructure.
• Advanced administration of Red Hat Enterprise Linux (RHEL) and Oracle Linux (OEL), including Red Hat Satellite/Capsule, Ansible Automation Platform (Tower), Git, systemd, kernel tuning, networking, and storage management (LVM/LUKS).
• Experience managing Linux workloads and patching across hybrid environments, including AWS, Azure, and VMware.
• Strong knowledge of ServiceNow (or similar ITSM platforms), Change and Incident Management, and alerting tools such as GoAlert.
• Experience with Red Hat Enterprise Linux, Ubuntu, Veritas InfoScale (VCS/VxVM/VxFS), OpenShift, OCFS2, Linux build automation, recovery processes, and Ansible Automation Platform.
• Strong understanding of server backup, vulnerability management, server hardening, OSCAP compliance, and enterprise security tools such as Splunk and Ivanti.
• Experience with AWS and Azure cloud services, VMware vSphere (ESXi/vCenter), Microsoft Active Directory, Group Policy, Centrify, NetApp storage, and Infrastructure as Code technologies (Ansible, Puppet, or similar).
• Experience developing automation using Bash, KornShell (ksh), Python, PowerShell, and Oracle Linux patch automation.
• Ability to communicate complex technical issues to both technical and business stakeholders while leading operational meetings and providing status updates.
• Must be a U.S. Citizen.
• Must be able to obtain and maintain the required agency security clearance.

• AWS Certified Cloud Practitioner certification is preferred but not required.
• Knowledge of networking technologies, protocols, connectivity, and security.
• Self-motivated professional with the ability to work independently in a fast-paced production environment.
• Excellent verbal, written, and interpersonal communication skills.

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can't be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we're keeping people around the world safe and secure.