Principal Systems Engineer
RTX· Defense· Oct 12, 2026 · 16d ago
Pasadena, CA
In office
Full-time
Principal
$141K–$216K est.
8+ years exp
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
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 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.
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
Learn More & Apply Now!
Please consider the following role type definition as you apply for this role.
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.
#RatheonSpace
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.
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 leave, paid time off, and 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.
Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. 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.
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.
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.
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Keywords to mirror
agile
- Platform
- workday
- Effort
- long
Benefits
Benefits detected in the listing.
Dental
Vision
401(K)
Paid Time Off
Parental Leave