Senior Information Systems Engineer - Onsite El Segundo, CA

Prattwhitney; El Segundo (CA); On-site; USD 96,000 - 182,000; Full time

Benefits offered by this job

Relocation assistance

401(k) match

Flexible spending accounts

Paid time off

Holidays

Employee assistance program

Job summary

RTX is seeking a cybersecurity professional to provide compliance guidance for production/test equipment in El Segundo, on-site work required. The role emphasizes collaboration with Cybersecurity and Digital Technologies to ensure TE meets security standards.

Requirements include a STEM degree and 3–5+ years of Linux administration with DoD Secret clearance; excellent troubleshooting and network fundamentals are essential for maintaining test integrity.

Qualifications

• Bachelor’s Degree in STEM
• 5+ years of relevant experience, or an advanced STEM degree with 3+ years
• Minimum 3 years of Linux systems administration

Responsibilities

• Provide cybersecurity compliance guidance to engineering for TE production and procurement
• Support Flight Test capabilities and processes for Raytheon test systems
• Develop Cybersecurity Compliant TE (Linux, IOS, Windows)
• Install software packages/updates to TE to enhance operations and testing
• Troubleshoot production and development TE for connectivity, functionality, compliance, and test integrity
• Collaborate with Digital Technologies to integrate TE into controlled networks or enterprises
• Collaborate with Cybersecurity to ensure TE compliance (using Nessus, Splunk, Ivanti)
• Collaborate with engineering to ensure changes do not affect the availability or test integrity

Skills

Linux systems administration

Networking fundamentals

Troubleshooting

Software installation

Education

Bachelor's Degree in STEM

Tools

Nessus

Splunk

Ivanti

Job description

Date Posted: 2026-08-18 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 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: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required on day 1

What You Will Do

• Provide Cybersecurity compliance guidance to engineering for production and procurement of Test Equipment (TE)
• Support Flight Test capabilities and processes for Raytheon test systems
• Develop Cybersecurity Compliant TE (Linux, IOS, Windows)
• Install software packages/updates to enhance operations and testing of production hardware
• Troubleshoot production and development TE to ensure connectivity, functionality, compliance, and test integrity
• Collaborate with Digital Technologies to integrate TE into controlled networks or enterprises
• Collaborate with Cybersecurity to ensure TE compliance (using tools such as Nessus, Splunk, Ivanti, and locally procured software
• Collaborate with engineering to ensure changes do not affect the availability or test integrity on the TE
• Support all reviews required prior for implementation of any changes to the TE

This position is 100% ONSITE in El Segundo, California

Qualifications

• Bachelor’s Degree in Science, Technology, Engineering, or Mathematics (STEM)
• Minimum of five (5) years of relevant experience OR an advanced degree in STEM and a minimum of 3 years relevant experience
• Minimum 3 years of Linux systems administration experience
• Networking fundamentals such as TCP/IP, DNS, DHCP, routing, and/or firewalls such as iptables/firewalld
• Package management such as yum/dnf, apt and/or repository management
• Experience with user account management, software installation and or technical customer support
• U.S. Citizen with current DoD Government issued Secret security clearance day one

We Prefer

• Certifications: DoD 8570.01M IAT II certified credentials (Security+, CISM, etc.), or ability to obtain within 6 months of start
• Systems Engineering Experience: Systems Engineer managing Operational Technology (OT) experience and/or test systems in a production environment
• OS & Systems Administration: Experience with Windows and Linux (desktop and server), including networking administration and user/permissions management such as AD integration, sudo, SELinux/AppArmor basics
• Security & Hardening Practices: Experience with backup/recovery procedures, baseline hardening such as CIS benchmarks, STIGs, and vulnerability scanning tools such as Nessus, OpenSCAP
• Automation/Configuration Management: Experience with configuration management tools (e.g., Ansible), including writing and maintaining playbooks for patch management and routine configuration
• Troubleshooting & Communication: Troubleshooting skills across Windows/Linux systems, customer service orientation, and oral/written technical communication with independent problem-solving ability

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.

This position offers relocation.

Position Classification

This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.

This position requires a security clearance.

DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process.

More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

Location

Location Information: El Segundo, CA: https://careers.rtx.com/global/en/raytheon-el-segundo-ca-location

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.

Compensation and Benefits

The salary range for this role is 95,500 USD - 181,700 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.

• 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
• 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.

• Annual short-term incentive compensation programs
• Annual long-term incentive compensation programs

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.

Application Window

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.

Equal Opportunity Employer

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.

Company Overview

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.