Principal Systems Engineer (Onsite)

RTX (Raytheon); Pasadena (CA); On-site; USD 118,000 - 225,000; Full time

Benefits offered by this job

Not relocation eligible

Job summary

Raytheon is seeking a Principal Systems Engineer for Pasadena, California. You will interface with stakeholders and customers to understand needs, lead a working group, and develop concepts of operations and architectures for new capabilities.

The role requires an active TS/SCI clearance and US citizenship, with 8+ years of engineering experience. You’ll evaluate trade studies, monitor risks, and communicate status to stakeholders on a regular basis.

Qualifications

• Active TS/SCI clearance required.
• US citizenship required as only citizens are eligible for clearance.
• Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM).
• Typically requires a Bachelor's degree and a minimum of 8 years of prior engineering experience.

Responsibilities

• Interface with stakeholders and customers to understand needs and identify system solutions.
• Lead a working group to host technical discussions and align system solutions.
• Develop CONOPs and system architecture for new capabilities.
• Run trade studies to identify best options within technical, cost, and schedule constraints.
• Monitor status and risk of capabilities in development.
• Communicate status and risk to stakeholders and customers.

Skills

Security clearance TS/SCI

US citizenship

STEM degree

8+ years engineering

CONOPS development

Requirements development

Test planning

stakeholder interface

Education

Bachelor's degree in STEM

Job description

Date Posted:

2026-10-12

Country:

United States of America

Location:

US-CA-PASADENA-4800-CUST ~ 4800 Oak Grove Dr ~ OAK GROVE (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 - Current

Security Clearance Status:

Active and existing security clearance required on day 1

About RTX:

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 Overview:

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.

Job Summary:

Raytheon is seeking a Principal Systems Engineer Location: Pasadena, California

What You Will Do

• Stakeholder & Customer Interface: Interface with various stakeholders and customers to understand their needs and identify appropriate system solutions for a specific domain area.


• Working Group Leadership: Run a working group to host technical discussions and align system solutions.


• Architecture Development: Develop CONOPs (Concepts of Operations) and system architecture for new capabilities.


• Trade Studies: Run trade studies to identify and recommend the best options, considering technical, cost, and schedule constraints.


• Status & Risk Monitoring: Monitor and understand the status and risk of capabilities currently in development.


• Reporting: Communicate status and risk to stakeholders and customers on a regular basis.


• Capability Development: Interface with various stakeholders and customers to understand gaps in utility to develop and mature new capabilities


• Test & Verification: Develop and execute system test plans; conduct verification and/or validation of complex systems through test plan execution; review test results for system capabilities; conduct detailed analysis of results to the extent able, or clearly communicate analysis needs to the analyst team and put together final briefing packages for customers.

Qualifications You Must Have

• Typically requires a Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of prior engineering experience.


• Experience with CONOPS development, requirements development/sell-off, test planning, and/or test data review.


• An active and transferable TS/SCI 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 the required security clearance.

Qualifications We Prefer

• Experience communicating technical details with stakeholders, both internal and external organizations.


• Experience working with government customers.


• Experience running a small team (1-3 others) to execute a test.


• Experience with data analysis and Agile concepts.

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, Respectability, Collaboration, and Innovation.


• Not Relocation Eligible - Relocation assistance not available

Please consider the following role type definition as you apply for this role.

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.

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.

The salary range for this role is 118,300 USD - 224,900 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