External Job Posting Title Senior UNIX System Engineer

Peraton; Radford (VA); Hybrid; USD 112,000 - 179,000; Full time

Benefits offered by this job

Medical benefits

401(k)

Paid time off

Job summary

Peraton is seeking a seasoned UNIX/Linux Systems Administrator to sustain and advance our Red Hat/Oracle Linux and Solaris environments in a mixed customer setting. You will harden, automate, and modernize servers to support mission-critical programs worldwide, with DoD 8140/DCWF requirements and a DoD Secret clearance.

The role allows remote options in Radford, VA or other locations. You will plan HW/SW integrations, tune performance, and produce security/status reports while maintaining robust

Qualifications

• Minimum experience aligned with DoD/DoW environments.
• Active DoD security clearance required.
• UNIX/Linux systems administrator experience with automation.
• Experience patching and hardening system configurations.

Responsibilities

• Manage UNIX/Linux servers across a mixed environment.
• Plan and implement hardware/software upgrades and integrations.
• Monitor performance and ensure continuous operations.
• Harden systems using STIGs, SELinux, firewalld/iptables.
• Maintain SOPs and runbooks for repeatable processes.

Skills

UNIX/Linux Admin

Automation

Security hardening

Security clearance

Networking

Education

Background in Computer Science or IT

Tools

Red Hat RHCSA/RHCE

Oracle Solaris

DNF/YUM/RPM

Job description

Peraton Overview

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.

Responsibilities

Every hour of every day, soldiers, acquisition professionals, and federal partners around the world count on systems that simply cannot go down. That is where PL ALTESS comes in. As the Agile Center of Excellence for the Program Executive Office Enterprise (PEO Enterprise), the U.S. Army Product Lead Acquisition, Logistics, and Technology Enterprise Systems and Services (PL ALTESS) runs enterprise-class data centers that host hundreds of programs, thousands of virtual servers, and millions of users worldwide, 24x7x365. Our team delivers the full spectrum of IT services: data center and Service Operations Center operations, network and systems administration, cybersecurity, cloud and application modernization, disaster recovery, and lifecycle testing across physical, virtual, and cloud architectures spanning multiple geographic locations. If you want your work to matter at mission scale, this is the place.

The opportunity: Join a seasoned UNIX team running a mixed, growing environment of Red Hat Enterprise Linux, Oracle Linux, and Solaris. You will harden, tune, automate, and modernize the servers that hundreds of programs depend on, and you will have real influence on where the enterprise goes next.

WHAT YOU'LL DO

• 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 HW/SW integrations.
• Monitor and tune system performance, and keep day-to-day server operations running smoothly.
• Harden servers (STIG, SELinux, 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.

Qualifications

WHAT YOU BRING (REQUIRED)

• Minimum of 12 years w/o a degree; 10 years with AS/AA; 8 years with BS/BA; Minimum of 6 years with MS/MA; Minimum of 3 years with PhD
• DoD 8140 qualified for DCWF 451 – System Administrator at the Intermediate proficiency level
• Computing environment / platform certification for the technologies supported (e.g., Red Hat RHCSA/RHCE, Oracle Linux OCP, Oracle Solaris 11 OCP); may be waived for 30 days after project start (PWS requirement — no longer mandated by DoD 8140, kept as a contract requirement).
• Background in Computer Science or IT.
• Active DoW Secret security clearance
• US Citizenship
• 3+ years as a UNIX/Linux Systems Administrator or IT Engineer, including automating assigned tasks.
• 3+ years of patch management experience, including applying security updates with DNF/YUM and RPM.
• 3+ years working in complex network environments: VLANs; troubleshooting tools such as ip/ifconfig, ss/netstat, and ssh; and system hardening with firewalld/iptables and hosts files.
• 3+ years managing a large pool of local users from the command line.
• 3+ years creating, maintaining, and following SOPs for repeatable processes, disaster recovery, and common problem resolution.
• 3+ years configuring and maintaining key services such as DNS, SFTP, SMTP, and NTP.
• Strong interpersonal skills and a team-player mindset.

WHAT SETS YOU APART (DESIRED)

• 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.

WORKLOCATION:

• Radford, VA or remote

Target Salary Range

$112,000 - $179,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual’s experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

Benefits Statement

Peraton offers eligible employees a variety of benefits including medical, dental, vision, life, health savings account, short/long term disability, EAP, parental leave, 401(k), paid time off (PTO) for vacation, and company paid holidays. A full listing of available benefits can be viewed athttps://www.careers.peraton.com/benefits.

EEO

EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.