Principal Systems Engineer

Date Posted:

2026-08-19

Country:

United States of America

Location:

US-AZ-TUCSON-801 ~ 1151 E Hermans Rd ~ BLDG 801 (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:

DoD Clearance: Secret

Security Clearance Status:

Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

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 freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.
 

Life Cycle Engineering seeks a Principal Systems Engineer.  In this role, you will directly support the ESSM Program Integrated Logistics Support (ILS) Lead and be responsible for executing tasks in the areas of ILS, Sustainment Analysis, and Sustainment Planning.  This will include tasks such as technical documentation, spares analysis, provisioning support, training, and field service activities.
 

What You Will Do:

• Provide general engineering support and product sustainment activities for developmental and legacy programs
• Act as a liaison with all engineering disciplines, such as Systems, Electrical, Mechanical, Test, Materials and Processes, and Structural design functions
• Develop and update technical documentation for test equipment
• Ensure the technical integrity, quality, and adherence to standards of the In-Service Support (ISS) products produced for Logistics, Provisioning, Field Support, Intermediate Level Maintenance, and Depot Level Maintenance through engagement in peer reviews, program reviews, design reviews, failure review boards, investigation teams, and working groups
   

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience
• Experience with engineering, logistics, sustainment and/or training.
• Experience with technical documentation for test equipment/test stands.
• Ability to obtain Interim Secret U.S. government issued security clearance is required prior to start date.

Qualifications We Prefer:

• Experience developing technical documentation and training materials, and writing technical documents with accuracy and adherence to existing standards.
• Broad knowledge of ILS processes, including sustainment and supportability principles and concepts.
• An understanding of the use of the Technical Data Package (drawings, parts list, interface control documents, and electrical schematics).
   

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.

• Relocation Eligible – Relocation assistance is 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.

• This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA) 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 

As part of our comm