Date Posted:2026-04-10Country:United States of AmericaLocation:US-AZ-TUCSON-805 1151 E Hermans Rd BLDG 805Position Role Type:OnsiteU.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
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Principal Systems Engineer
Job Description:

Date Posted:

2026-04-10

Country:

United States of America

Location:

US-AZ-TUCSON-805 1151 E Hermans Rd BLDG 805

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: Top Secret

Security Clearance Status:

Active and existing security clearance required on day 1

At RTX, the world 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 spanet 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.

Raytheon’s Operations Modeling & Analysis (Southwest) department is currently seeking a Systems Engineer to support Raytheon’s Advanced Technology organization. Join this highly visible team and perform highly technical assignments, directly contributing to protecting our nation and our warfighters.  Advanced Technology incubates new and novel technologies and mission areas for the RTX business, captures new programs, and executes extremely unique special projects. The team welcomes you to join our tradition of excellence through innovation and collaboration.

This is an onsite role located in Tucson, AZ.

What You Will Do

  • Actively participate as a senior member of an agile development team

  • Lead the design, development, and review of new software features in an all-digital distributed simulation environment.

  • Work with software and analysis leads to scope tasks and schedule to maintain a project roadmap that outlines schedules and milestones for a multi-vendor modeling, simulation, and analysis environment.

  • Collaborate with Associate Contractors and Customers ensure community capabilities are aligned and scope analysis projects appropriately.

  • Work with vendors and Raytheon programs to define requirements and capabilities for distributed modeling and simulation support.

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 unless prohibited by local laws/regulations.

  • Experience with at least one object-oriented programming language (Python, C++)

  • Experience contributing to a team environment to develop creative and achievable solutions to complex technical, schedule, and cost problems.

  • Active and transferable U.S. government issued TOP SECRET security clearance

Qualifications We Prefer

  • Specific majors: Computer Science, Computer/Electrical Engineering, Software Engineering, Mechanical Engineering, Aerospace Engineering

  • Previous experience performing verification and validation of digital simulation models

  • Experience evaluating systems performance in complex environments

  • Experience with distributed modeling and simulation

  • Experience with Linux/UNIX, High Performance Computing, Git, SIMDIS, Air Dominance Testbed, Air Combat Evaluation Model, C++, Python

  • Active and transferable U.S. government issued TOP SECRET security clearance

  • Current or ability to obtain U.S. government issued TS/SCI security clearance

  • 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 avail for this position

Learn More & Apply Now!

  • 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 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 

    LI-RH2

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 107,500 USD - 204,500 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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Company Details
Raytheon Technologies
870 Winter Street
Waltham, Massachusetts 02451 USA
www.rtx.com/
1269 Open Jobs Available
Raytheon Technologies Corporation is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It includes four industry-leading businesses—Collins Aerospace, Pratt & Whitney...

Supported Manufacturers:
Bombardier

Supported Models:
Challenger, Global
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Job Info
Location
tucson, Arizona, United States
Type
Permanent
Company Details
Raytheon Technologies
870 Winter Street
Waltham, Massachusetts 02451 USA
www.rtx.com/
1269 Open Jobs Available
Raytheon Technologies Corporation is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It includes four industry-leading businesses—Collins Aerospace, Pratt & Whitney...

Supported Manufacturers:
Bombardier

Supported Models:
Challenger, Global

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