Principal Systems Engineer

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.

Required: U.S. citizenship and an active Secret security clearance (or ability to obtain interim clearance) before the start date.

Location: Tucson, AZ (US-AZ-TUCSON-805, 1151 E Hermans Rd, BLDG 805). This is a 100% onsite role with occasional travel.

What You Will Do

• Update, maintain, and improve requirements and documentation for development and production efforts, including software and hardware subsystems.
• Create and manage systems architecture, requirements, interface definitions, and description documents; handle system integration and verification using Cameo.
• Participate in technical conversations with the customer.
• Work with suppliers and the Supply Chain organization for procured items under the role of Responsible Engineering Authority (REA).
• Lead verification and validation efforts, ensuring all requirements are assessed during Verification and Qualification testing.
• Conduct trade studies and present results to customers.
• Collaborate with Software, Hardware, and Chief Engineer teams on technical tasks.
• Onboard, mentor, and guide team members using core Systems Engineering skills.
• Provide technical expertise in development, integration, troubleshooting, and failure investigations.
• Lead Systems Verification Reviews with the Chief Engineer, Lead Systems Engineer, and Integrated Product Team leadership.
• Work closely with Systems, Software, Configurable Logic, Hardware, and Test teams.
• Become the knowledgeable go‑to Systems Engineer for the program.
• Support Statistical Process Control assessments in the factory and within hardware verification of missile sections and launch platforms.
• Facilitate knowledge transfer within and across Integrated Product Teams and cross‑functional collaboration.
• Lead peer reviews and formal release of Contract Data Requirements Lists (CDRLs) and Technical Data Package (TDP) documents.
• Support test equipment software integration and verification for system test.
• Support system performance analysis.

Qualifications You Must Have

• Minimum bachelor’s degree in a STEM discipline (e.g., Electrical Engineering, Systems Engineering, Physics, Math) and 8+ years of relevant experience (or 5+ in a relevant field).
• Experience with software, firmware, configurable logic, hardware, integration, and/or test.
• Experience in one or more: Model‑Based Systems Engineering (MBSE), Requirements Development, Management, Verification, Integration and Test, CONOPS development, System Architecture, Verification Strategy and Planning.

Qualifications We Prefer

• Top Secret clearance.
• Experience presenting analytical and technical presentations.
• Experience with Agile development methods/processes.
• Experience with Automation and/or Digital Engineering.
• Experience in the Defense Industry and with military systems, tactics, techniques, procedures, and DoD customer infrastructure.
• Experience evaluating and mitigating technical risks.
• Experience working with multidisciplinary technical and engineering teams.
• Experience in Systems Engineering on a missile program.
• Software or Firmware Verification and Qualification testing experience.
• Prior experience with foreign military sales.
• Ability to perform trade studies to optimize system performance.
• Customer focus and collaboration skills.
• Experience with Change Control Board (CCB) and document release (engineering and formal release).
• Experience creating and linking requirements, architecture, and verification artifacts in Cameo.
• Experience with system and subsystem level requirements development, design, and documentation of system level software architecture.
• Experience with performance analysis.
• Experience with DOORS, Cameo, and/or Common Product Data Management (cPDM).
• Ability to manage multiple competing priorities.
• Strong interpersonal and communication skills.
• Familiarity with system safety, reliability, and configuration management.

Salary and Benefits

Salary range: $107,500 – $204,500 USD. Benefits may include medical, dental, vision, life insurance, short‑term and 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. Annual incentives and bonus programs may apply based on level and collective‑bargaining agreements.

Equal Employment Opportunity

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, veteran status, or any other 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.