Sr. System Administrator- Must have a TS/SCI Poly clearance!

Date Posted:

2026-06-24

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 CI Poly - Current

Security Clearance Status:

Active and existing security clearance required on day 1

At RTX, the world 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 freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Our Digital Technology (DT) organization ensures that Raytheon teammates across the globe can communicate, collaborate and innovate for customer success. We create leading-edge technology solutions to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world.

Senior System Administrator, internally known as Senior Analyst, based in Stennis, MS position is on Stennis Space Center. Information Workplace Services collaborate with many teams to support exciting, critical programs with classified information system capabilities. Success in this role means you can 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 be supporting a Raytheon program in a classified environment as a System Administrator:
• You will be 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 8x5 with after-hours call-in responsibility.
• You will collaborate with many teams 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.
• 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.
• The ability to work effectively with frequent and direct customer interaction in a real-time operational environment
• The ability to work under pressure in restoring high priority systems back to operations
• This position is 100% onsite in Stennis, MS.

Qualifications You Must Have:

• Requires a bachelor’s degree and a minimum of 2 years or prior relevant experience
• Must have an 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
• By 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
• Experience with VMWare or Linux Systems
• Experience with tape libraries
• Experience configuring domain information utilities, such as Active Directory, Centrify, LDAP, and DNS
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