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

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

Benefits offered by this job

Medical

Dental

Vision

Life insurance

Short-term disability

Long-term disability

401(k) match

Flexible spending accounts

Flexible work schedules

Employee Scholar Program

Parental leave

Paid time off

Holidays

Job summary

RTX in Tucson is seeking a Principal Systems Engineer for the Effectors team to join our SETC organization. You will update requirements, support verification, and mentor SMEs to ensure first-time-right performance for warfighter systems.

Minimum 8 years of Systems Engineering experience, MBSE/DOORS, and Agile practices are required, with missile program and defense industry background preferred. You will collaborate across disciplines to optimize system performance and drive successful

Qualifications

• Bachelor's in STEM and a minimum of 8 years of relevant experience.
• Experience in Systems Engineering in CONOPS, System Architecture, System Requirements, and verification strategies.
• Experience developing system requirements specifications and requirements management processes.
• Verification and Qualification testing experience.
• Masters or PhD in Engineering, CS, Math or Physics.
• Experience with multi-disciplinary technical and/or engineering teams.
• Experience in Systems Engineering on a Missile Program.
• Experience in the Defense Industry beyond Raytheon.
• Experience with Agile framework development methods / processes.
• MBSE and associated tools; DOORS and/or cPDM exposure.

Responsibilities

• 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 SMEs.
• Participate in Failure Investigations.
• Facilitate knowledge transfer across IPTs/CPTs and cross-functional collaboration.
• Conduct Trade Studies and present results to customers.
• Support test equipment software integration and verification for system test.

Skills

Systems engineering

Agile methodologies

MBSE

Requirements management

Trade studies

Performance analysis

DOORS

cPDM

Cross-functional collaboration

Missile program experience

Education

Bachelor's degree in STEM

Master's or PhD in Engineering, CS, Math or 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!

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

• 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
• 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

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.

• 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
• 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 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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RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.