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Principal System Administrator-Pelham, NH; onsite

Job in Pelham, Hillsborough County, New Hampshire, 03076, USA
Listing for: Raytheon
Full Time position
Listed on 2026-07-29
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Administrator, Systems Engineer
Salary/Wage Range or Industry Benchmark: 86800 - 165200 USD Yearly USD 86800.00 165200.00 YEAR
Job Description & How to Apply Below
Position: Principal System Administrator-Pelham, NH (onsite)
Location: Pelham

Location: US-NH-PELHAM-PE1 ~ 50 Bush Hill Rd ~ BLDG 1

Date Posted:

Country: United States of America

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type: DoD Clearance:
Secret

Security Clearance Status: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Principal System Administrators, internally known as Principal Analyst, infrastructure Workplace Services, collaborate with a diverse team to support exciting, critical programs with classified information system capabilities. Success in this role means you are able to develop, implement and maintain secure, cost-efficient environments across various classified programs. Program teams rely on your collaboration and guidance to define computing requirements and create end-to-end solutions to solve complex IT infrastructure problems.

What You Will Do:

  • 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/Open Shift.
  • 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.
  • Demonstrates flexibility and adaptability to support business needs, including adjusting to shift changes

Qualifications You Must Have:

  • Typically requires A University Degree or equivalent experience and minimum 5 years prior relevant experience, or An Advance Degree in a related field and minimum 3 years prior relevant experience.
  • Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
  • Must have Linux or Windows experience
  • Experience with Server architectures and troubleshooting methods.
  • Experience in one of the following:
    Active Directory, VMware, MySQL, networking administration experience
  • Experience with secure system configurations, system hardening, application settings, and tailoring Linux environments

Qualifications We Prefer:

  • 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,…
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