Principal Systems Administrator

Date Posted: 2026-08-18 • Location: Forest, MS • Full-time, 100% onsite • U.S. citizenship required

About the Role

At RTX, the world's largest aerospace and defense company, you’ll join 185,000 great minds united by purpose to solve the world’s most complex problems. This role provides IT systems administration support in a heterogeneous Microsoft Windows environment, ensuring 24x7 operations with occasional on-call or after-hours maintenance. Travel up to 5% domestically may be required.

The ability to obtain and maintain an active U.S. government-issued DoD Secret security clearance is required from day one; U.S. citizenship is mandatory.

Responsibilities

• Administer and maintain core services including DNS, DHCP, Active Directory (AD), and server replication.
• Troubleshoot and resolve moderate to complex issues involving hardware, operating systems, and software integration.
• Implement and manage data RAID, backup, and recovery technologies.
• Collaborate with Cybersecurity professionals to maintain compliance with security requirements.
• Install, configure, and document software applications requested by end users.
• Provide user and system documentation, process training, and ongoing technical support.
• Obtain Department of Defense Directive (DoDD) 8140 / 8570 certification within 6 months of start date.

Requirements

• University degree or equivalent experience, plus a minimum of 5 years of relevant IT experience (or an Advanced Degree with 3 years of experience).
• Experience with Active Directory, VMware vCenter, vSphere, or other virtual computing methods.
• Experience with Windows deployment, administration, security hardening, and troubleshooting.

Preferred Qualifications

• Active DoD Secret or Top Secret clearance.
• Experience with infrastructure backup, restore, disaster recovery, and business continuity products.
• Scripting experience (e.g., PowerShell, Python).
• Experience using tools like SCAP and following STIGs.

Pay

The salary range for this role is $86,800 – $165,200 USD, commensurate with experience, location, and skills.

Benefits

• Medical, dental, and vision insurance.
• Life insurance and short/long-term disability coverage.
• 401(k) match.
• Flexible spending accounts.
• Flexible work schedules (where applicable).
• Employee assistance program.
• Employee Scholar Program (tuition assistance).
• Parental leave, paid time off, and holidays.
• Annual short-term and/or long-term incentive compensation programs (eligibility dependent on role and business unit).