Sr System Administrator

Date Posted:

2026-04-14

Country:

United States of America

Location:

US-MS-PASCAGOULA-1000-CUST ~ 1000 Access Rd ~ ACCESS (External Site)

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:

TS/SCI with Polygraph

Security Clearance Status:

Active and existing security clearance required on day 1

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world. 

What You Will Do:

You will be supporting a Raytheon program in a classified environment as a System Administrator. Responsibilities include the monitoring and support of systems that are operational 24x7 and which occasionally require work effort beyond standard work hours. This position is an 8x5 with after-hours call-in responsibility. You will collaborate with a diverse team to support exciting, critical programs with classified information system capabilities. Success in this role means you will be responsible for monitoring and maintaining system health and security posture, directly supporting customer mission-critical capabilities. You will work closely with program developers and system engineers to research issues, determine root causes, and implement solutions to system problems. Additionally, the position serves as a help desk team member in a customer-facing environment, so the ability to communicate effectively and respectfully with other teams and with the customer is of utmost importance, as you will be expected to uphold our excellent reputation. This position is 100% onsite in Stennis, MS.

Qualifications You Must Have

• Typically requires a University degree or equivalent experience and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience.

• Active and transferable U.S. government issued TS/SCI with poly security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

• (on start date) Must have an active DoD 8570 IAT Level 2 certification (or higher) on start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND.

• A minimum 5+ years of experience in VMWare or Linux Systems Administration working with customers in technical operations or engineering.

• Experience with Veritas tape libraries and/or Hitachi VSPs, storage products from Dell/EMC (e.g., Isilon/PowerScale) and/or Net App, and a strong background & experience troubleshooting and debugging applications. 

Qualifications We Prefer

• The ability to work under pressure to restore high priority systems back to operations, to work effectively with frequent and direct customer interaction in a real-time operational environment, and experience presenting technical information to customers, clients, and/or internal audiences

• A thorough understanding of operating system concepts such as swapping and paging, inter-process communication, and devices and device drivers

• Ability to navigate, debug, and modify programs in an advanced programming language

• Experience configuring domain information utilities, such as Active Directory, Centrify, LDAP, and DNS

• Working knowledge of thin-client technologies

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.

Learn More & Apply Now!

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 86,800 USD - 165,200 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 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.

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