System Administrator

RTX (Raytheon); El Segundo (CA); On-site; USD 76,000 - 144,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) match

Flexible schedules

Employee Scholar Program

Parental Leave

Paid Time Off

Job summary

RTX in El Segundo is seeking a skilled IT Systems Administrator to manage Windows and Red Hat environments, participate in security-compliant processes, and collaborate with cybersecurity professionals. The role requires DoD Secret clearance and provides onsite work in a fast-paced defense setting.

Travel up to 10% may be required. Expect a full-time, onsite position with competitive benefits and security-oriented responsibilities.

Qualifications

• Typically requires a University degree or equivalent experience and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field.

Responsibilities

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

Skills

Windows/Linux experience

Team collaboration

Troubleshooting

Education

University degree or equivalent experience

Tools

VCenter/ESXi

Active Directory

DNS/DHCP

Ansible

Job description

Date Posted: 2026-09-17

Country: United States of America

Location: US-CA-EL SEGUNDO-E04 ~ 2006 E El Segundo Blvd ~ BLDG E04

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: 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:

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


• Working as a team member in a fast-paced technological environment. Use troubleshooting techniques to resolve technical problems of basic to moderate scope and complexity to include the integration of hardware and operating systems.


• Execute actions as directed by senior staff and project management.


• Engage in cross-team collaboration and align with expectations of leadership team.


• Manage ESXi, VCenter and Microsoft windows domains


• Experience with Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server replication methods.


• Experience with hardware RAID, hardware and software encryption and server management tools.


• Perform data backup and restore, using industry best practice.


• Install and configure software applications requested by end users.


• Work with Cybersecurity professionals to maintain security requirements.


• 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 required as business needs dictate to other US Domestic locations, up to 10% per year.


• Full time 100% Onsite position.

Qualifications You Must Have:

• Typically requires a University degree or equivalent experience and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field.


• Active and transferable U.S. government issued Secret security 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 Windows and/or Linux.

Qualifications We Prefer:

• Experience Deploying Windows workstations and migrating end-user data.


• Experience with cloning techniques.


• Use and guide use of automation tools e.g. Ansible.


• Experience with operating system concepts and implementations.


• Microsoft Windows Active Directory Services administration and support (e.g. user and computer objects administration, Group Policy).


• Experience with network services related to Microsoft Windows environment (e.g. DC, DNS, DHCP, etc.).


• Experience with supporting desktop / workstation hardware.


• Experience with an IT incident/service request system.

What We Offer:

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

The salary range for this role is 75,800 USD - 144,200 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 u

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.