OPERATIONAL SYSTEM ENGINEER: TS/SCI w/ FS Poly with Security Clearance

Operational Systems Engineer: Senior Level Location: Chantilly, VA US Security Clearance Requirement: TS/SCI with Full Scope Polygraph Clearance Status: Must be Current JOB DESCRIPTION: We are looking for someone who is well versed in devops, linux system administration and has a background in penetration testing and/or systems engineering to assist penetration testers with automating tasks, creating virtual infrastructure and assisting in performing tests in a virtual environment. JOB SUMMARY: This position will require a mix of devops skills, linux system administration and network engineering. You stand up virtual infrastructure using hypervisors such as ProxMox and ESXi. You will work to automate the deployment of virtual machines, networks and software packages using things like ansible, git, python and bash scripting. You will assist with setting up virtual networks and VPN networks using pfSense and OpenVPN. You will help build and test new systems employed by our customer to support ongoing operations. You will install, configure, and maintain Linux operating systems including CentOS, Debian, RedHat and Ubuntu. You will analyze and resolve problems associated with the operating systems servers, hardware, applications and software. REQUIRED SKILLS: • Experience as a Linux Systems Administrator • Experience operating in a virtual environment such as VMware vSphere / ESXi, KVM and/or ProxMox • Experience or understanding setting up VPN networks using OpenVPN, Wireguard and/or pfSense firewalls. • Proficient in at least one scripting language such as Python, Perl and/or Bash. • Solid understanding of Linux logging, network traffic analysis, network traffic redirection (i.e. iptables). • Understanding of Linux operating systems (e.g. CentOS, Ubuntu, Fedora, Scientific Linux, Debian, etc.) and the ability to research the latest technological developments in the relevant operating systems to identify impact and anticipate changes to the organization's operating environment. • Experience in the design, implementation, procurement, tradecraft, or maintenance of various layers of network infrastructure. • Organized, detail-oriented, a team player, and willing/eager to learn. DESIRED SKILLS • Experience monitoring network activity and network traffic redirection. • Familiarity with web proxies (iptables, mod_proxy, digital certificates, etc.), common web servers (i.e. Apache, NGINX), SSL certificates, and DNS records. • Experience integrating LDAP with Windows Active Directory (AD) • Experience with Windows and network administration • Experience with Apache Solr • Experience with installing, configuring and maintaining physical server hardware

Location: Chantilly, Virginia, US

Posted Date: 10/18/2025