Principal System Administrator-Pelham, NH (onsite) with Security Clearance

Job Overview

briefcase

Employment Type

Full-time
moneybag

Compensation

Salary
Range $72,800.00 - $108,100.00
clock

Work Schedule

Standard Hours
diamond

Benefits

Medical insurance
Dental Insurance
Vision Insurance
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
Relocation assistance

Job Description

RTX, the world's largest aerospace and defense company, employs over 185,000 talented professionals driven by a shared purpose to solve some of the globe's most complex problems. With a heritage spanning more than a century, Raytheon brings enduring engineering excellence and a strong commitment to innovation, research, and development, offering unique capabilities and opportunities across multiple market-leading businesses. The company focuses on advancing aerospace and defense technology to ensure the security and freedom of the United States and its allies, providing solutions that address evolving threats and help create a safer world.

This role is for a Principal System Administrator, also known internally as Principal Analyst within the infrastructure Workplace Services team, located onsite at Pelham, New Hampshire. The position supports critical and classified programs that require a high level of security clearance and technical expertise. As a Principal System Administrator, you will collaborate with a diverse group of professionals including engineers, software developers, and cybersecurity teams to maintain secure, efficient computing environments across multiple classified projects. Your responsibilities will focus on developing, implementing, and maintaining secure and cost-effective IT infrastructure solutions that meet program requirements and solve complex system challenges. The role demands proficiency in managing Red Hat Enterprise Linux environments, virtualization and containerization technologies like VMware and Kubernetes, and an understanding of stringent security and compliance frameworks such as DFARS, RMF, and NIST.

Candidates must be U.S. citizens eligible for Department of Defense (DoD) Secret clearance and capable of obtaining interim security clearances prior to their start date. The work schedule involves onsite support within a closed DoD facility area, requiring flexibility to respond to both planned and emergency tasks, sometimes beyond standard work hours, and travel obligations of up to 10%. This role offers a competitive salary range from $86,800 to $165,200 USD, reflecting the breadth of experience and skill levels required. Beneficial certifications, including DoD 8140/8570 credentials such as CompTIA Security+, must be obtained within six months of hire.

RTX values a culture grounded in Safety, Trust, Respect, Accountability, Collaboration, and Innovation. Relocation assistance is available for eligible candidates. The company promotes a diverse and inclusive work environment and provides extensive benefits including medical, dental, vision coverage, life insurance, disability benefits, 401(k) matching, flexible spending accounts, paid time off, parental leave, and ongoing employee development programs. RTX offers a career path that contributes to major aerospace and defense advancements, allowing employees to grow their skills while making a meaningful impact on global security and technology innovation.

Job Requirements

  • University degree or equivalent experience
  • Minimum 5 years prior relevant experience or advanced degree with minimum 3 years prior relevant experience
  • Ability to obtain interim U.S. government issued security clearance prior to start date
  • U.S. citizenship required
  • Linux or Windows experience
  • Experience with server architectures and troubleshooting methods
  • Experience in one of Active Directory, VMware, MySQL, networking administration
  • Experience with secure system configurations, system hardening, application settings, and tailoring Linux environments

Job Qualifications

  • University degree or equivalent experience
  • Minimum 5 years prior relevant experience or advanced degree with minimum 3 years prior relevant experience
  • Ability to obtain interim U.S. government issued security clearance prior to start date
  • U.S. citizenship required
  • Experience with Linux or Windows environments
  • Experience with server architectures and troubleshooting methods
  • Experience in one of Active Directory, VMware, MySQL, or networking administration
  • Experience with secure system configurations, system hardening, application settings, and tailoring Linux environments
  • Strong leadership, teamwork, communication, collaboration, and organizational skills preferred
  • Deep experience with Red Hat Enterprise Linux and its ecosystem including authentication and identity services (SSSD, LDAP, Kerberos, NIS) and file sharing/integration services (Samba, NFS) preferred
  • Expertise with automation and configuration management tools such as Ansible and Red Hat Satellite, and scripting skills in Bash, Python, Perl, or C preferred
  • Familiarity with enterprise storage systems (e.g., NetApp) and virtual desktop infrastructure technologies such as Horizon, Profile Unity, and NVIDIA GPU virtualization preferred
  • Proficiency with monitoring, vulnerability scanning, and compliance tools (ACAS, Splunk, Nessus, SCAP, STIG, Nagios, SolarWinds) and knowledge of security frameworks (CMMC, NISPOM, JAFAN, JSIG, DFARS, DoD RMF) preferred

Job Duties

  • Provide system administration in a heterogeneous Redhat 8 and 9 Enterprise Linux environment
  • 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
  • Demonstrate flexibility and adaptability to support business needs, including adjusting to shift changes

Job Criteria

Experience

Mid Level (3-7 years)


Job Location

Your Profile Is Visible To Hiring Managers Across OysterLink.

We'll match you with best jobs

Get job offers faster

Business woman
Business man
Search For More Opportunities:

How Candidates Get Hired Faster

Apply to 2–3 similar roles

Complete profile & get best matches

Check new opportunities daily

Woman chef
Man chef