Principal Linux Administrator

Prattwhitney; El Segundo (CA); On-site; USD 95,500 - 181,700; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) match

Flexible work schedules

Job summary

Prattwhitney is looking for an IT Systems Administrator in El Segundo, CA, to provide IT systems administration in an environment utilizing Microsoft Windows and RedHat Enterprise Linux. The role involves supporting 24x7 operations and collaborating with multiple teams.

The ideal candidate will have a university degree or equivalent experience, at least 5 years of relevant work, and must possess an active Top Secret security clearance. Benefits include a competitive salary range and flexible work schedules.

Qualifications

• Minimum 5 years of prior relevant experience or an advanced degree with minimum 3 years experience.
• Must obtain DoDD 8140 / 8570 certification (CompTIA Security+ CE or equivalent) within 6 months.
• Active and transferable Top Secret security clearance required.

Responsibilities

• Provide IT systems administration in a heterogeneous environment.
• Support 24x7 operations and collaborate with cross-team stakeholders.
• Manage ESXi, vCenter, and Microsoft Windows domains.
• Install and configure software applications for end users.

Skills

Windows and/or Linux systems administration

Troubleshooting techniques

Network services (DC, DNS, DHCP)

IT incident/service request systems

Education

University degree or equivalent experience

Tools

Ansible

Job description

Location and Employment Details

El Segundo, CA (US‑CA‑EL SEGUNDO‑E04) – Onsite, full time (100%).

Security Clearance

Active and transferable U.S. government‑issued Top Secret security clearance required prior to start date. U.S. citizenship is required.

Job Overview

Provide IT systems administration in a heterogeneous Microsoft Windows and RedHat Enterprise Linux environment. Support 24x7 operations and collaborate with cross‑team stakeholders.

Responsibilities

• Use troubleshooting techniques to resolve technical problems of basic to moderate scope, including integration of hardware and operating systems.
• Execute actions as directed by senior staff and project management.
• Engage in cross‑team collaboration and align with leadership expectations.
• Manage ESXi, vCenter, and Microsoft Windows domains.
• Work with Windows Server internals or Linux fundamentals—including DNS, DHCP, AD, and server replication methods.
• Apply hardware RAID, hardware and software encryption, and use server management tools.
• Perform data backup and restore using industry best practices.
• Install and configure software applications for end users.
• Work with Cybersecurity professionals to maintain security requirements.
• Maintain operational readiness 24x7, including occasional work beyond standard hours.
• Travel up to 10% of the time to other U.S. domestic locations as needed.

Required Qualifications

• University degree or equivalent experience.
• Minimum 5 years of prior relevant experience, or an advanced degree and minimum 3 years experience.
• Active and transferable Top Secret security clearance prior to start date.
• U.S. citizenship.
• Experience with Windows and/or Linux systems administration.
• Must obtain DoDD 8140 / 8570 certification (CompTIA Security+ CE or equivalent) within 6 months of start date.

Preferred Qualifications

• Experience deploying Windows workstations and migrating end‑user data.
• Experience with cloning techniques.
• Experience using and guiding automation tools (e.g., Ansible).
• Experience with operating system concepts and implementations.
• Microsoft Windows Active Directory Services administration and support (user and computer objects, Group Policy).
• Experience with network services in a Windows environment (e.g., DC, DNS, DHCP).
• Experience supporting desktop / workstation hardware.
• Experience with an IT incident/service request system.

Benefits & Compensation

• Salary range: $95,500 – $181,700 USD.
• Medical, dental, vision, life insurance, short‑term and long‑term disability.
• 401(k) match, flexible spending accounts.
• Flexible work schedules.
• Employee assistance program, Employee Scholar Program.
• Parental leave, paid time off, holidays.
• Annual short‑term and/or long‑term incentive compensation programs (dependent on business unit & collective bargaining agreement).

EEO Statement

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.