Mid-Level Infrastructure Systems Administrator
Peraton · Chantilly, VA, US
About this role
## Company Overview Peraton is a next-generation national security company that delivers trusted, differentiated solutions and technologies to protect the nation and allies. Peraton operates across land, sea, space, air, and cyberspace, supporting essential government agencies and all branches of the U.S. armed forces. ## Role **Mid-Level Infrastructure Systems Administrator** (Chantilly, VA) — supporting a Department of Defense (DoD) customer as part of the **Driftmarker Infrastructure** team. You will support the design, development, test, and deployment of a broad and complex system in an Agile environment to help drive mission success for multiple stakeholders. ## Responsibilities - Support the build-out of a **cloud-based classified environment** with multiple **Kubernetes clusters**, **artifact repositories**, and supporting **CI/CD** infrastructure - Manage **operating system configurations**, system documentation, **performance tuning**, software installations/updates, **system hardening**, and **storage allocation** - Monitor and maintain **mission-critical**, highly available, high-performance networked systems in a team-oriented environment - Collaborate with other engineering teams to improve platforms and reduce complexity in architecture and processes - Monitor and manage system resources to maintain efficiency - Provide development support for problem identification, diagnosis, and resolution ## What You’ll Do (Key Technical Focus) - Install, patch, test, and configure networked services and file systems - Use basic scripting and authentication experience - Perform Red Hat Enterprise Linux administration (RHEL 9.x and later), including: - Building systems from bare metal - Software package installation - OS/application troubleshooting - Implementing security hardening - Apply patches/updates/hotfixes using **Red Hat Satellite**, **YUM**, or **DNF** - Ensure consistent software versions across environments - Diagnose and resolve system issues; analyze logs using **journalctl**, **dmesg**, or **/var/log** - Collaborate with Red Hat support (or similar vendors) for complex issues - Work directly with **Windows and Linux** operating systems - Maintain detailed system documentation in **Confluence**, **Git Wiki**, or similar tools - Perform and/or analyze regular vulnerability scans and address findings ## Required Qualifications - **Minimum Top-Secret clearance** with ability to obtain **TS/SCI** - Education/experience combination: - **Associate’s degree** + **7+ years** relevant experience, **or** - **Bachelor’s degree** + **5+ years** relevant experience, **or** - **Master’s degree** + **3+ years** relevant experience - **Plus:** an additional **4 years** relevant experience may be considered in lieu of a bachelor’s degree - **3+ years** in a previous **System Administration** role - Meet **DoD 8140** foundational qualifications for System Administrator (Intermediate/Advanced proficiency) ## Desired Qualifications - Current/active certification meeting DoD 8140 foundational requirements (e.g., **Security+**, **Cloud+**, **SSCP**, **CASP+**, etc.) - Experience with virtualization/cloud technologies (e.g., **OpenStack**, **Docker**, **Ansible**, and/or **Heat templates**) - Familiarity with Red Hat tools (e.g., **RH Satellite**, **RH OpenStack**, **RH OpenShift**) - Experience configuring **Red Hat High Availability** clusters - Experience with **load balancing** and **failover** systems - Strong written
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