Principal Systems Engineer – Software Systems (Onsite)

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

Benefits offered by this job

Relocation eligible

Relocation assistance available

Job summary

RTX in Tucson, AZ is seeking a Principal Systems Engineer to design, develop and integrate software-centric systems for missile programs. This on-site role requires embedding software expertise, MBSE leadership, and close collaboration with systems, software, and test teams to ensure first-time success for warfighters.

The role emphasizes embedded software design, integration and test, and technical oversight across verification activities, with opportunities to mentor new team members and work

Qualifications

• Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM) and minimum 8 years of engineering experience.
• Experience in Systems Engineering and MBSE, requirements development/management/verification or integration and test for software products.
• Masters or PhD in Engineering, Math or Physics and familiarity with Agile methods is preferred.

Responsibilities

• Update and maintain system and subsystem level requirements for embedded software, configurable logic, and test systems.
• Model the system and development/production processes using Cameo.
• Conduct trade studies and present results to customers.

Skills

MBSE

Requirements Management

Embedded Software

C/C++

Python

DOORS

Azure DevOps

MATLAB

System Engineering

Security Clearance

Trade Studies

Education

Bachelor's degree in STEM

Master's or PhD preferred

Tools

Cameo

Test Equipment

Job description

Date Posted: 2026-06-08

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: Secret

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

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world.

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

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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.

Privacy Policy and Terms:

Click on this link to read the Policy and Terms