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Raytheon · 8 hours ago

Principal Linux Systems Administrator

Pelham, NH

Full-time

Onsite

Senior Level, Lead/Staff

$82K/yr - $164K/yr

5+ years exp

Raytheon is dedicated to helping the nation and allies defend freedoms and deter aggression. The Principal Linux Systems Administrator will provide operational support and sustainment for a high priority operational environment that supports a critical U.S. Government mission, while collaborating with various teams to resolve complex infrastructure challenges.

Intellectual PropertyInternetWeb Hosting

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

You will provide System Administration in a heterogeneous Redhat 8 & 9 Enterprise Linux environment

You will utilize virtualization and containerization technologies, including VMware vCenter, vSphere, Horizon, ESXi, KVM, Podman, Docker, and Kubernetes/OpenShift

Collaborate with engineers, software developers, systems administrators, storage, networking, and high-performance computing teams to resolve complex infrastructure and integration challenges

Partner with cybersecurity teams to ensure continuous compliance with regulatory and security frameworks such as DFARS, RMF, and the NIST Cybersecurity Framework

Provide critical, on-site support for mission systems in a closed DoD area, responding to both planned and emergent tasks, with occasional work outside standard hours and up to 10% travel as required

Obtain and maintain DoD 8140 / 8570 certification (e.g., CompTIA Security+ or equivalent) within six months of hire

This position is 100% onsite role

Qualification

Red Hat Enterprise LinuxVirtualization technologiesAutomation toolsSecurity compliance frameworksScripting skillsSystem hardeningEnterprise storage systemsProblem solvingCommunication skillsTeamworkOrganizational skills

Required

Typically requires a bachelor's degree and a minimum of 5 years of prior relevant experience or a master's degree and minimum of 3 years of prior relevant experience

Must have active and transferable U.S. government issued secret clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Experience with Red Hat Enterprise Linux (RHEL), including system installation, administration, patching, and troubleshooting in enterprise environments

Experience with secure system configurations, system hardening, application settings, and tailoring Linux environments

Preferred

Strong leadership, teamwork, communication (written and oral), collaboration, and organizational skills

Deep experience with Red Hat Enterprise Linux (RHEL) and its ecosystem, including authentication and identity services (SSSD, LDAP, Kerberos, NIS) and file sharing/integration services (Samba, NFS)

Expertise with automation and configuration management tools such as Ansible and Red Hat Satellite, along with strong scripting skills in Bash, Python, Perl, or C to support provisioning, patching, and lifecycle management

Familiarity with enterprise storage systems (e.g., NetApp) and virtual desktop infrastructure (VDI) technologies such as Horizon, Profile Unity, and NVIDIA GPU virtualization (NLS, DLS)

Proficiency with monitoring, vulnerability scanning, and compliance assessment tools (ACAS, Splunk, Nessus, SCAP, STIG, Nagios, SolarWinds) and working knowledge of security frameworks (CMMC, NISPOM, JAFAN, JSIG, DFARS, DoD RMF)