Secret-Cleared Systems Administrator (Onsite)

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

Benefits offered by this job

Medical

Dental

Vision

Life insurance

401(k) match

Flexible spending accounts

Flexible work schedules

Employee Assistance Program

Parental leave

Paid time off

Holidays

Job summary

RTX in El Segundo, CA is seeking an IT Systems Administrator to support a mixed Windows and RedHat environment. The role requires active Secret clearance, US citizenship, and 6-month certification target for DoD 8140/8570. The position is 100% onsite with potential after-hours work and up to 10% travel.

The team will operate in a fast-paced setting, collaborating with cybersecurity and senior staff to ensure secure, reliable systems across multiple domains.

Qualifications

• University degree or equivalent experience, or advanced degree in related field.
• Active and transferable U.S. government issued Secret clearance is required.
• U.S. citizenship is required for security clearance eligibility.
• Experience with Windows and/or Linux.

Responsibilities

• Provide IT systems administration in Windows and RedHat Enterprise Linux environments.
• Work as a team member in a fast-paced technological environment.
• Use troubleshooting techniques to resolve basic to moderate issues across hardware and OS.
• Execute actions as directed by senior staff and project management.
• Engage in cross-team collaboration and align with leadership expectations.
• Manage ESXi, vCenter and Windows domains.
• Experience with Windows Server internals or Linux fundamentals (DNS, DHCP, AD, replication).
• Experience with RAID, encryption, and server management tools.
• Perform data backup and restore using best practices.
• Install and configure software applications requested by end users.
• Work with Cybersecurity to maintain security requirements.
• Obtain DoDD 8140 / 8570 certification (Security+ CE or equivalent) within 6 months.
• Role operates 24x7 and may require after-hours work.
• Travel up to 10% domestically as needed.

Skills

Team collaboration

Troubleshooting

Fast-paced environment

Education

University degree or equivalent experience

Advanced degree in related field

Tools

ESXi

vCenter

Windows Domains

Active Directory

DNS

DHCP

Job description

RTX in El Segundo, CA is seeking an IT Systems Administrator to support a mixed Windows and RedHat environment. The role requires active Secret clearance, US citizenship, and 6-month certification target for DoD 8140/8570. The position is 100% onsite with potential after-hours work and up to 10% travel.

The team will operate in a fast-paced setting, collaborating with cybersecurity and senior staff to ensure secure, reliable systems across multiple domains.