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Updated daily · Sep 16, 2026
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Principal Systems Engineer – Software Systems (Onsite)

RTX (Raytheon)Tucson, AZFull-time107,500 USD - 204,500 USD

This engineer will serve as a responsible systems engineering contributor for embedded software capabilities across developing and fielded missile systems. The work includes maintaining requirements, modeling systems and development processes, conducting trade studies, supporting verification and validation, and helping investigate integration or performance issues. The position is part of the Systems Engineering and Test Capabilities organization and involves close coordination with software, configurable logic, test, systems, and customer teams. It also includes mentoring less experienced engineers and becoming a technical resource for software-centric program functions. The role suits an experienced systems engineer with strong embedded software integration and test knowledge who can work independently in a highly collaborative, security-cleared defense environment.

Requirements

Bachelor's degree in STEM field with minimum 8 years of engineering experienceDemonstrated experience in Systems Engineering with requirements development and managementProficiency in Model-Based Systems Engineering (MBSE) and integration/test methodologiesActive and transferable U.S. DoD Secret security clearance (or ability to obtain interim clearance)U.S. citizenship requiredStrong embedded software technical knowledge and multi-disciplinary coordination skills
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Listed July 3, 2026 · Verify details with the employer before applying.

About RTX (Raytheon)

Tucson houses Raytheon's missile and defense HQ producing precision-guided systems, and has flight-tested an AI/ML-powered Radar Warning Receiver.

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