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Peraton

Runs and secures technology for federal agencies

Senior UNIX System Engineer

DevOps & InfrastructurePosted on Nov 13
Full-timeRadford, VA, USA

About the Job

Requirements

  • A minimum of 12 years of experience without a degree; 10 years with an Associate of Arts or Associate of Science degree; 8 years with a Bachelor of Science or Bachelor of Arts degree; 6 years with a Master of Science or Master of Arts degree; or 3 years with a PhD.
  • DoD 8140 qualification for DCWF 451 – System Administrator at the Intermediate proficiency level.
  • Computing environment or platform certification for supported technologies, such as Red Hat RHCSA/RHCE, Oracle Linux OCP, or Oracle Solaris 11 OCP; this may be waived for 30 days after project start.
  • Background in Computer Science or IT.
  • Active DoW Secret security clearance.
  • U.S. citizenship.
  • At least 3 years as a UNIX/Linux Systems Administrator or IT Engineer, including automating assigned tasks.
  • At least 3 years of patch management experience, including applying security updates with DNF/YUM and RPM.
  • At least 3 years working in complex network environments, including VLANs, troubleshooting with ip/ifconfig, ss/netstat, and ssh, and system hardening with firewalld/iptables and hosts files.
  • At least 3 years managing a large pool of local users from the command line.
  • At least 3 years creating, maintaining, and following SOPs for repeatable processes, disaster recovery, and common problem resolution.
  • At least 3 years configuring and maintaining services such as DNS, SFTP, SMTP, and NTP.
  • Strong interpersonal skills and a team-player mindset.

Responsibilities

  • Manage, maintain, deploy, troubleshoot, and support RHEL/Oracle Linux and Solaris servers across a mixed customer environment.
  • Plan, execute, and implement new system hardware and software, and lead new hardware/software integrations.
  • Monitor and tune system performance, and maintain day-to-day server operations.
  • Harden servers using STIG, SELinux, and firewalld, and report on overall security and operational status.
  • Produce utilization reports with existing tools to identify problems and drive corrective actions.
  • Manage the lifecycle of multi-vendor data center equipment, including firmware version control and periodic preventive maintenance.
  • Create and maintain team technical instructions, operating procedures, and policies.
  • Recommend, demonstrate, and implement technologies that expand, upgrade, and increase efficiency in the environment.

Desired Qualifications

  • At least 3 years of basic and advanced SELinux management and configuration.
  • Experience supporting cybersecurity patch management, STIGs, SRGs, RMF, SCA-V, and Cyber Operational Readiness Assessments (CORA).
  • Automation experience with Ansible, Bash, or Python.
  • Experience deploying large-scale hardware and software enhancements or upgrades across widely distributed geographic sites.

About the Company

Peraton

Runs and secures technology for federal agencies

Peraton builds and runs secure technology for American defense, intelligence, space, and civilian agencies, from military networks to satellite ground stations. In 2025, the Federal Aviation Administration chose it to manage the overhaul of the nation's air traffic control system, replacing copper wiring with fiber and upgrading radar and radios. Its engineers, many holding security clearances, run and defend agency networks and data centers, write mission software, and operate space and communications systems, and agencies pay for this work through multiyear contracts. Peraton was formed in 2017, when private-equity firm Veritas Capital bought Harris Corporation's government IT business, and is based in Reston, Virginia.

Company size
10,001+
Company stage
Grant
Total funding
$60M
Headquarters
Reston, VA
Founded
2017

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