Senior Principal Systems Engineer (Onsite)

Date Posted: 2026-05-20

Location: Tucson, AZ

Job Type: Onsite; Security Clearance: U.S. citizenship required, prior SW Sec Clearance (DoD Secret).

Job Responsibilities

• Interface with customers and key suppliers
• Develop CONOPS
• Develop & Refine System Architecture
• Develop & Refine System Requirements
• Lead team developing Subsystem level Requirements
• Perform Functional & Physical Analyses
• Perform Functional Allocation
• Develop and Lead Requirements Verification Strategies and Plans
• Developing Integrated Systems Security Solutions System Level to Subassembly Integration, Verification, and Validation planning and execution
• Support System Deployment
• Support Production Support Life-cycle Logistics
• Cross-functional collaboration and coordination
• Establish and maintain relationships with other Programs, Program Leadership, and the customer community
• Coordinate with program leadership on long term strategy and planning
• Review and support trade studies, down-selects, and other analyses
• CDRL management, report development, and delivery
• Develop materials for customer meetings (Reviews, Technical Interface Meetings, status meetings, etc.) and brief customer representatives

Qualifications

• Minimum: Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM preferred) and 10+ years of prior engineering experience
• Experience in Systems Engineering, Test Systems and Environments, System Architecture, and/or Design with cross-functional teams of Systems Engineers and multidiscipline engineers
• Experience leading cross-functional teams through developmental gates such as Systems Requirements Review, Preliminary Design Review, Critical Design Review, or Test Readiness Review
• Preferred: Post Graduate degree in Engineering, Computer Science, Math or Physics
• Understanding of Systems Engineering Product Development Cycle
• Detailed experience in embedded software, nuclear survivability, RF signal processing, GNC, RF system integration & test, 6DOF/model development
• Prior work experience giving technical briefs or presentations with strong verbal and written communication skills
• Interfacing with customers
• Developing & Refining CONOPS, System Architecture, System Requirement, and Requirements Verification Strategies & Plans
• Performing Functional & Physical Analyses and Allocation
• Creating & Maintaining Specifications Subassembly and System Integration & Verification

Benefits

Salary range: 132,400 USD – 251,600 USD.

Relocation assistance available.

Benefits include 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.

Equal Opportunity Employer Statement

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 Section503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.