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Updated daily · Sep 19, 2026
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Sr Principal Real-time Software Engineer

RTX (Raytheon)Tucson, AZ$132,400 - $251,600

The engineer joins Raytheon’s Effectors Center and contributes to the full lifecycle of real-time embedded software, from architecture and implementation through integration, testing, debugging, and deployment. The work supports heterogeneous systems that combine processors, FPGA firmware, operating systems, device drivers, and mission-critical control functions. In an Agile or Lean integrated team, this person collaborates with product owners, chief engineers, and specialists from multiple disciplines to improve reliability, testability, safety, and measurable quality. The role also includes design reviews, proposal support, technical leadership, and coaching of less experienced staff. It suits an experienced embedded software architect or developer who is comfortable with hardware-software integration, time-sensitive systems, and cleared defense programs.

Requirements

STEM degree and at least 10 years of relevant experienceExpertise in at least two areas including embedded C++, embedded security, or software architectureExperience with embedded real-time operating systemsBackground integrating hardware, firmware, and software in complex systemsActive transferable Secret U.S. security clearance and U.S. citizenshipAbility to obtain required program access
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Listed August 20, 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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