Linux Systems Administrator

Peraton•College Park, MD

1d•Onsite

About The Position

Peraton Labs is seeking a poly cleared Linux Systems Administrator to support the infrastructure team for a cleared research and development program in Maryland. This role will support the implementation, maintenance, troubleshooting, and daily operations of Linux-based systems used across classified and unclassified research environments. The ideal candidate for this role is a hands-on systems administrator with strong Linux experience, solid troubleshooting skills, scripting ability, and the ability to support users, researchers, engineers, and customer stakeholders in a fast-paced R&D environment. This position will help ensure research systems, servers, storage, networking components, and supporting infrastructure remain reliable, secure, and available for mission-focused prototype development and experimentation. This position requires full-time on-site work at a customer site near College Park, MD.

Requirements

Minimum of 3+ years of experience with a Bachelors degree, 1+ years of experience with a Masters degree, or a PhD in Computer Science, Information Systems, Computer Engineering, Cybersecurity, or a related technical discipline. In lieu of a Bachelors, an additional 4 years of experience is required for a total of 7+ years relevant experience.
Strong experience with Linux systems administration
Experience with Windows system administration in mixed operating system environments
Experience supporting IT systems in programs or environments of similar scope, scale, and complexity
Experience with Linux installation, configuration, patching, troubleshooting, user support, and system maintenance
Experience with scripting/automation using Python, Bash, or similar
Understanding of basic networking concepts, including TCP/IP, DNS, DHCP, routing, switching, firewalls, ports, and network troubleshooting
Experience support client/server systems, storage devices, network-connected devices, and user workstations
Ability to provide Tier 1 and Tier 2 support, diagnose issues, and communicate status clearly
Strong communication skills and ability to work as part of an integrated team with customers, subcontractors, and Peraton personnel.
US Citizenship is a requirement for this position
This position requires an active/current TS/SCI w/ Polygraph

Nice To Haves

Experience supporting classified research environments, DoD/IC customers, or national security programs
Experience with Linux distributions such as RHEL, CentOS, Rocky Linux, Ubuntu, Debian, or similar platforms
Experience with system hardening, patch management, vulnerability remediation, audit support, STIGs, ACAS/Nessus, SCAP, or RMF-related activities
Experience with virtualization platforms such as VMware, KVM, Proxmox, Hyper-V, OpenStack, or similar tools
Experience with storage technologies such as NAS, SAN, RAID, NFS, SMB, iSCSI, object storage, or backup appliances
Experience with configuration management or automation tools such as Ansible, Puppet, Chef, SaltStack, or Terraform/OpenTofu
Experience with monitoring, logging, and alerting tools such as Splunk, ELK/OpenSearch, Prometheus, Grafana, Zabbix, Nagios, or similar tools
Experience with network troubleshooting of complex issues, such as IPSec, VXLan, FWs, Load Balancing and DNS
Expertise with Virtual Desktop Infrastructure (VDI) and thin client architectures
Experience with Security administration to include enterprise antivirus, malware detection, intrusion detection, and audit solutions
Experience with open source tools, such as Snort
Experience with containers or DevOps environments such as Docker, Podman, Kubernetes, GitLab, GitHub, Jenkins, or CI/CD pipelines
Knowledge of cloud or private cloud technologies such as OpenStack, AWS, Hadoop, Cloudera, or similar platforms
Experience supporting operational mission partners, research teams, software developers, or cyber/network experimentation environments
Ability to establish and maintain strong working relationships across technical teams, customer stakeholders, and program leadership

Responsibilities

Provide day-to-day administration, maintenance, monitoring, and troubleshooting for Linux-based IT systems
Support implementation, configuration, operation, and sustainment of servers, workstations, storage, network-connected devices, and research infrastructure
Provide Tier 1 and Tier 2 support for system access, user issues, software problems, hardware issues, and operational incidents
Diagnose and resolve Linux system, application, storage, network, and user access issues
Manage user accounts, permissions, authentication, system access, and basic security controls
Install, configure, patch, and update Linux operating systems, software packages, tools, and system services
Support Windows systems administration as needed within mixed Linux/Windows environments
Develop scripts and automation using Bash, Python, or similar tools to improve system operations, monitoring, reporting, and repeatable administration tasks
Monitor system performance, availability, logs, storage utilization, and resource consumption
Support system capacity analysis, resource planning, and performance optimization
Support backup, recovery, log management, archive, and system restoration procedures
Assist users, researchers, and engineers with accessing and using IT systems in classified and unclassified environments
Escalate issues, communicate system status, and coordinate problem resolution with internal teams, customer stakeholders, and subcontractor personnel
Maintain system documentation, operational procedures, configuration records, and troubleshooting notes
Support security posture activities, including patching, vulnerability remediation, endpoint protection, and audit support