Principal Systems Engineer - Requirements Development/Requirements Management (Top Secret)

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

Benefits offered by this job

Relocation assistance

On-site role

Job summary

RTX is seeking a Principal Systems Engineer for the SETC organization in Tucson, AZ. You will lead and coach multi-disciplinary teams to ensure system requirements are robust and verifiable throughout the lifecycle of a missile-like defense system.

You will write and maintain requirements, support design and verification, and guide integration activities on-site at the Tucson campus. Ideal candidates bring 8+ years in Systems Engineering and MBSE/DOORS experience.

Qualifications

• Bachelor’s degree in STEM with 8+ years in Systems Engineering.
• Experience in developing and refining CONOPS, system architecture, and requirements.
• Experience with system requirements specs and requirements management.
• Verification and qualification testing experience.
• Preferred: Master’s/PhD in Engineering, CS, Math or Physics.
• MBSE, DOORS and/or cPDM experience preferred.

Responsibilities

• Update and improve requirements documentation for development and production.
• Support design and system verification testing.
• Provide SE guidance during integration and test.
• Support system performance analysis and test activities.
• Mentor engineers and coordinate with SMEs.
• Conduct trade studies and present results to customers.
• Assist in test equipment software integration and verification.

Skills

Systems Engineering

CONOPS development

System Architecture

Requirements management

Verification & Qualification

Trade studies

Cross-functional teamwork

Education

Bachelor’s degree in STEM

Master’s or PhD in Engineering/CS/Math/Physics

Tools

DOORS

cPDM

MBSE tools

Job description

Date Posted:

2026-08-10

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:

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, for the Effectors team 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 be responsible for technical rigor of requirements documents, including developing/writing requirements, updating existing requirements, coordination of requirement maintenance, across team collaboration, sharing program process knowledge, mentoring engineers, and working with the technical and program leads execute program tasks. Responsibilities include, but are not limited to, requirements management, providing SE oversight during integration and test activities. In this role, you will have the opportunity to work on an effectors project pertinent to the systems lifecycle. This role is on-site at our Tucson, AZ campus.

What You Will Do

• Update, maintain, and improve requirements and requirements documentation for development and production efforts
• Support Design and System Verification testing
• Provide SE guidance and support during integration and test efforts
• Support system performance analysis, and Integration and Test
• Mentor and guide team members, including engagement of Subject Matter Experts (SMEs)
• Participate in Failure Investigations
• Facilitate knowledge transfer within and across IPTs/CPTs to include Cross-Functional collaboration and coordination
• Conduct Trade Studies and present results to customers
• Support test equipment software integration and verification for system test

Qualifications You Must Have

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 8 years of relevant experience
• Experience in Systems Engineering in one or more of the following areas: Developing & Refining CONOPS, System Architecture, System Requirement, Requirements Verification Strategies & Plans
• Experience with developing system requirements specifications and requirements management processes
• Verification and Qualification testing experience

Qualifications We Prefer

• Masters or PhD in Engineering, Computer Science, Math or Physics
• Experience working with multi-disciplinary technical and/or engineering teams
• Experience in Systems Engineering on a Missile Program
• Experience in the Defense Industry beyond Raytheon
• Experience using Agile framework development methods / processes
• Experience with Model-Based Systems Engineering and associated tools
• SW/FW Verification and Qualification testing experience
• Prior experience with foreign military sales
• 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
• 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 with Agile, Model-Based Systems Engineering (MBSE), and/or Digital Engineering

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 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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