Principle Linux/VMware Systems Administrator- Must have a TS/SCI Poly clearance

globalhr; Pascagoula (MS); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical, dental, vision

401(k) match

Paid time off

Job summary

Raytheon Technologies is seeking a Principal Linux/VMware System Administrator for an onsite role based in Stennis, MS. The position supports mission-critical capabilities with an 8x5 schedule and after-hours call-in responsibilities.

The role requires an active TS/SCI Poly clearance, DoD 8570 IAT Level 2 certification, and a bachelor’s or master’s degree with relevant experience. Salary ranges from 86,800 USD to 165,200 USD, with comprehensive benefits and on-site workstation support.

Qualifications

• Bachelor’s degree with 5+ years of relevant experience or Master’s with 3+ years.
• Active TS/SCI Poly clearance required before start date.
• U.S. citizenship required; only citizens eligible for clearance.
• Active DoD 8570 IAT Level 2 certification or obtain within 30 days.
• Experience in VMware and Linux systems administration for customer operations.
• Experience configuring AD, Centrify, LDAP.

Responsibilities

• Performs software application maintenance on mission systems running a variety of operating systems to include Linux, Windows, and VMware.
• Performs routine and preventative maintenance such as general computer tasks, application loads, disk utilization, system loading and system monitoring.
• Detects, isolates, documents, quick reports, and resolve system outages, or problems encountered during operations of the operational system baseline, which includes the collections of diagnostic data, restoring the system operation, development of workarounds, and other activities necessary for recovery of a system.
• Accurately document problems in logging and discrepancy reporting tools
• Collect data describing the environment at the time of the failure and perform other activities in support of Tier 3 maintenance provider DR investigation and resolution
• Perform system monitoring, analyzing and document performance and conduct trend analyses as required
• Also support system engineering groups as required for ongoing analysis and integration efforts
• Environment fluctuates between routine and urgent, depending on ongoing tasks, priorities, and performance of assigned systems
• Works directly with the customer in most aspects of the day-to-day

Skills

Linux administration

VMware

System monitoring

Documentation

Customer interaction

Shell scripting

PKI knowledge

TS/SCI clearance

Education

Bachelor's degree

Master's degree

Tools

Active Directory

Centrify

LDAP

VMware (onsite)

Job description

Date Posted: 2026-10-07

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

Empowering a global business. Providing affordable solutions. Delivering competitive discriminators by unleashing deep expertise. These are just some of the many ways the Digital Technology team atRaytheon Technologies creates success for our customers. Joining our Program Execution team will allow you to collaborate with RTX organizations to enable business growth, speed, and agility through business innovation, technical proficiency, and operational excellence.

OurDigital Technology (DT)organizationensures that Raytheon teammates across the globe can communicate,collaborateandinnovateforcustomersuccess. Wecreateleading-edge technologysolutionsto prevent security threats, secure the integrity of our systems andsupportIT infrastructures around the world.

Principal Linux/VMWare System Administrator based in Stennis, MS, collaborateswith manyteams tosupportexciting, critical programs with classified information system capabilities. Successin 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. This position is an 8x5 position with after-hours call-in responsibility. This position is 100% onsite in Stennis, MS.

What You Will Do

• Performs software application maintenance on mission systems running a variety of operating systems to include Linux, Windows, and VMWare
• Performs routine and preventative maintenance such as general computer tasks, application loads, disk utilization, system loading and system monitoring
• Detects, isolates, documents, quick reports, and resolve system outages, or problems encountered during operations of the operational system baseline, which includes the collections of diagnostic data, restoring the system operation, development of workarounds, and other activities necessary for recovery of a system
• Accurately document problems in logging and discrepancy reporting tools
• Collect data describing the environment at the time of the failure and perform other activities in support of Tier 3 maintenance provider DR investigation and resolution
• Perform system monitoring, analyzing and document performance and conduct trend analyses as required
• Also support system engineering groups as required for ongoing analysis and integration efforts
• Environment fluctuates between routine and urgent, depending on ongoing tasks, priorities, and performance of assigned systems
• Works directly with the customer in most aspects of the day-to-day

Qualifications You Must Have

• Typically requires a bachelor’s degree and minimum of 5yearsof prior relevant experience or amaster’s degree and minimum of 3yearsof prior relevant experience
• Must have an active and transferable U.S. government issued TS/SCI Poly clearance prior to start date. U.S. citizenship isrequired, as only U.S. citizens are eligible for a security clearance.

• Must have an active DoD 8570 IAT Level 2 certification (or higher) or acquire one within 30 days of start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND.

• Experiencein VMWare and Linux Systems Administration working with customers in technical operations or engineering
• Experience configuring domain information utilities, such as Active Directory, Centrify, LDAP

Qualifications We Prefer

• Experience presenting technical information to customers, clients and/or internal audiences
• 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
• Ability to navigate, debug, and modify programs in an advanced programming language
• Ability to write PERL, python, and shell scripts
• Experience with storage products from Oracle/Sun/STK, EMC, IBM, NetApp, and/or DDN
• Experience with virtual / cloud computing technologies using Citrix, VMware, and Amazon Web Services (AWS)
• Working knowledge of thin-client technologies
• Experience designing, implementing, and troubleshooting Public Key Infrastructure (PKI)Qualified

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 Eligibility

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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