Raytheon · 16 hours ago
Principal Linux Systems Administrator
Pelham, NH
Full-time
Onsite
Senior Level, Lead/Staff
$87K/yr - $165K/yr
3+ years expRaytheon is dedicated to helping the nation and allies defend freedoms and deter aggression. They are seeking a Principal Linux Systems Administrator to provide operational support and sustainment for a high-priority operational environment that supports a critical U.S. Government mission, requiring collaboration with various teams and adherence to security frameworks.
Intellectual PropertyInternetWeb Hosting
No H1B
Security Clearance RequiredU.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
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 current 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)
Benefits
Medical
Dental
Vision
Life insurance
Short-term disability
Long-term disability
401(k) match
Flexible spending accounts
Flexible work schedules
Employee assistance program
Employee Scholar Program
Parental leave
Paid time off
Holidays
Company
Raytheon
Raytheon, an RTX business, creates next-generation defense solutions that are smarter, faster and better than previously thought possible.
10001+ employees
Funding
Current Stage
Late StageTotal Funding
$16MKey Investors
United States Air Force
2012-01-17Series Unknown· $5.5M
2009-10-26Acquired
2009-10-01Series Unknown· $10.5M
Leadership Team
Arunava Chatterjee
Executive Director of Ghost Black Operations & CEO & CTO
Kieran Nolan
Chief Enterprise Architect / IT CTO
Recent News
2025-08-29
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