Principal Systems Engineer – Software Systems Engineer (Onsite)

Raytheon; Tucson (AZ); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Relocation assistance

Onsite role

Job summary

Raytheon, located in Tucson, AZ, is hiring a Principal Systems Engineer to lead software-focused systems engineering for missile programs. The role emphasizes embedded software design, MBSE, requirements management, and cross‑disciplinary collaboration with the customer and internal teams.

You will work in a 100% on-site environment at the Tucson campus with occasional travel. A strong background in MBSE, C/C++, Python, and integration is required to ensure first-time success across the

Qualifications

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of prior engineering experience.
• Experience in Systems Engineering and MBSE, Requirements Development/Management, Verification, or Integration and Test for software products.

Responsibilities

• Update and maintain system and subsystem level requirements for embedded software and test systems.
• Model the system and development processes using Cameo.
• Conduct Trade Studies and present results to customers.
• Provide SE oversight during verification, validation and integration activities.
• Collaborate with Systems, Software, Configurable Logic and Test teams on technical tasks.
• Participate in customer discussions and support software-centric program capabilities.

Skills

MBSE

Requirements development

Embedded software

C/C++

Python

Azure DevOps

Matlab

DOORS

cPDM

System safety

Education

Bachelor’s in STEM

Tools

DOORS

cPDM

Azure DevOps

Matlab

Python

C/C++

C#

Job description

Date Posted:

2026-08-03

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:

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

The Systems Engineering and Test Capabilities (SETC) organization is currently hiring a Principal Systems Engineer to join our Tucson, AZ location. SETC is an exciting and challenging environment where you will have the opportunity to design, develop and partner with multi-disciplines to shape innovative solutions for our customers. Join our organization and experience the Systems V engineering life cycle while interfacing with a variety of engineering disciplines, subject matter experts, Chief Engineers, Chief Technologists, the customer, and so many more to ensure we design, integrate, and strengthen our systems to work the first time and every time for our warfighters!

As a Principal Systems Engineer you will support missile programs as a Software-focused Responsible Systems engineer, contributing directly to successful software requirements and integration for both fielded and development missile systems. These responsibilities include managing system and subsystem requirements, providing SE technical oversight during integration and test activities, participating in verification and validation efforts for the system, and providing SE expertise in troubleshooting and failure investigations. The Software-Systems role requires a high level of technical proficiency in the area of embedded software design, integration and test. This included multi-disciplined coordination, and establishing and maintaining relationships with the embedded software team and customer technical community.

In this role, you will have the opportunity to work on an effectors project pertinent to the systems lifecycle. This role is 100% on-site at our Tucson, AZ campus with the possibility of occasional travel.

What You Will Do

• Update and maintain all system and subsystem level requirements specifications for embedded software, configurable logic and/or test systems software
• Model the system and the system development and production processes using Cameo
• Conduct Trade Studies and present results to customers
• SE technical contributor for verification and validation efforts, ensuring all requirements are being assessed
• Work closely with the Systems, Software, Configurable Logic and Test teams on a variety of program technical tasks
• Participate in technical conversations with the customer
• Become a knowledgeable and ‘go-to’ Systems Engineer for the software centric program capabilities
• Help to onboard new team members, mentor, and guide them using core Systems Engineering skills
  

Qualifications You Must Have

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of prior engineering experience.
• Experience in Systems Engineering
• Experience in Model-Based Systems Engineering (MBSE), Requirements Development, Requirements Management, Requirements Verification, or Integration and Test for software products
  

Qualifications We Prefer

• Masters or PhD in Engineering, Math or Physics
• Experience using Agile framework development methods / processes
• Experience with Agile, Model-Based Systems Engineering (MBSE), and/or Digital Engineering
• Experience presenting analytical and technical presentations
• Experience evaluating and mitigating technical risks
• A self-starter who can take on task with limited guidance
• Customer focus and collaboration skills
• Experience with performance analysis
• Experience with DOORS and/or cPDM
• Experience using Azure DevOps methods/tools
• Experience with Matlab, C, C#, C++, Python
• Ability to perform trade studies to optimize system performance
• Understanding of Systems Engineering Product Development Cycle
• Familiarity with system safety, reliability, and configuration management
• Experience working in an integration lab, test facility, or in the field supporting integration and/or verification.
• Experience evaluating systems using simulated environments
• Experience generating technical documentation such as trade studies, test plans, procedures or technical reports.
• Experience in integration with test equipment, telemetry data analysis tools, and missile systems host platforms
  

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
• This position is an onsite role – Tucson, AZ: https://careers.rtx.com/global/en/raytheon-tucson,-az-location
• We Are RTX
  

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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