Senior Linux System Engineer Jobs in Exeter, NH (NOW HIRING)

Date Posted:

2026-06-10

Country:

United States of America

Location:

US-MA-ANDOVER-AN1 ~ 350 Lowell St ~ AN1 ESSEX BLDG

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:

Secret - Current

Security Clearance Status:

Active and existing security clearance required on day 1

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.

What You Will Do

• Manage and optimize the server infrastructure in a heterogeneous information system.

• Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment. 

• Lead a team of System Administrators to ensure the confidentiality, integrity and availability of IT systems and applications within their assigned section.

• Provide leadership to support a varied range of administrative tasking, to include corrective/preventive maintenance, recurring operations functions, account management, and system optimization.

• Guide administrators whose duties may include setting up administrator and service accounts, maintaining system documentation, tuning system performance, installing system wide software and allocating mass storage space.

• Work with Cybersecurity professionals to maintain security requirements and provide documentation and training on advanced IT processes and procedures and other tasks as assigned

• Participate in Change Request reviews, to include participating in Change Management boards at multiple program levels.

• Coordinate technical and process document reviews and resolve system administration, engineering, and integration issues

• Lead and participate in technical meetings with team members and other program personnel, representing the organization in functional area matters.

• Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification) within 6 months of start date.

• Systems are operational 24x7 and occasionally require work effort beyond standard work hours.

• Travel is required to other US Domestic locations as business needs dictate. Up to 10% per year.

• Other tasks as assigned.

Qualifications You Must Have  

• Typically requires a university degree or equivalent experience and a minimum of 8 years of prior relevant experience or an Advanced Degree in a related field and a minimum of 5 years’ experience.

• An active and transferable US Secret Clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

• Experience as a Linux System Administrator

• Experience with at least 2 but not limited to, the following technologies: VMware, Kubernetes, OpenShift, Podman, OpenShift, Infrastructure as Code (Terraform and/or Ansible), Windows administration.

Qualifications We Prefer

• Experience in the following areas: patch management, OS Upgrades, computer security, system monitoring and logging

• Experience with Storage Area Network (SAN) and Network Attached Storage (NAS) systems.

• Experience with NetApp, Veeam

• Experience with requirements gathering, planning, and managing deployment, installation, maintenance and upgrade efforts, over multiple geographic sites.

• Experience managing IT services and support in a 24/7 real-time operational environment.

• Experience with Linux/Windows Scripting.

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

• Relocation assistance available, provided final candidate meets eligibility requirements

Learn More & Apply Now!

• Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as:  Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. 

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 107,500 USD - 204,500 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.Hired applicants may be eligible for benefits, including but not limited to, 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, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

Privacy Policy and Terms:

Click on this link to read the Policy and Terms