Senior Systems Engineer - Linux - 26-016

Responsibilities

• Design, deploy, configure and maintain Linux servers, workstations, laptops, storage systems and supporting infrastructure.
• Evaluate, procure, integrate and maintain computing, networking and data storage resources.
• Administer RAID (Redundant Array of Independent Disks) storage systems, backup solutions and engineering data repositories.
• Install and maintain network infrastructure including switches, routers, firewalls, wireless systems and air-gapped environments.
• Deploy and support infrastructure services, including web servers, source code repositories, network file services, development toolchains, remote access systems, GitLab, OpenProject and related collaboration tools.
• Provide direct technical support to scientists, engineers and technicians.
• Implement and maintain Linux hardening standards, STIGs, encryption technologies, smartcard authentication, PKI services, TLS certificates and certificate revocation checking.
• Work with Information Assurance personnel to maintain RMF compliance, accreditation artifacts and cybersecurity documentation.
• Develop and maintain technical documentation, operating procedures and system configuration records.
• Identify opportunities to improve reliability, security, maintainability and operational efficiency.

Requirements

• Must possess a Secret level security clearance; or the ability to obtain one will be considered.
• Completion of an accredited technical program or relevant military, professional or technical experience is preferred.
• Five to eight years of Linux systems administration experience.
• Strong understanding of Linux/UNIX operating systems, networking and system architecture.
• Experience supporting users in a networked Linux environment.
• Strong organizational, analytical and problem-solving skills.
• Strong written and verbal communication skills.

Desired Qualifications

• Linux, Networking, and Infrastructure Experience With: Linux command-line administration, shell scripting, system performance analysis, package management and automation.
• Tools including SSH, rsync, AWK, grep, vi/vim and systemd.
• TCP/IP networking, IPv4/IPv6, firewalls, switches, routers and network troubleshooting.
• Git, GitLab, Subversion, Samba, Python, virtualization technologies, backup systems and software or hardware RAID administration.
• Information Assurance and Security Experience With: Linux hardening and Security Technical Implementation Guides (STIGs).
• PKI, X.509 certificates, CAC/smartcard authentication, TLS/SSL, OCSP and CRL validation.
• Data-at-rest encryption including LUKS and encrypted RAID systems.
• LDA, Active Directory integration, Kerberos, SSSD and PAM.
• Vulnerability remediation, security compliance auditing and RMF compliance activities.
• Operation of Linux systems in classified, controlled or air-gapped environments.
• Domain Experience Experience In One Or More Of The Following Areas: Communications systems, Signal processing, Industrial control systems, Real-time systems, Oceanographic systems, Scientific or engineering research environments.