Principal Software Security Engineer

Salary: $106000 - 202000 per year Requirements: Bachelors degree in Science, Technology, Engineering, or Mathematics (STEM) with a minimum of 8 years of relevant software engineering experience Proficiency in C/C++ programming languages Familiarity with Xilinx UltraScale+ MPSoC, Versal, or similar embedded processors Experience with embedded operating systems like VxWorks or Embedded Linux Background in embedded software security Eligibility to obtain and maintain an Interim U.S. Secret Level security clearance Must be a U.S. citizen, as only U.S. citizens qualify for a security clearance Responsibilities: Develop world-class security software for deployed missile systems Design, develop, integrate, and test real-time missile software Apply system security principles in missile software applications Create software applications across various computing platforms using C and C++ Analyze real-time software design and its performance implications for system security Collaborate with Systems Security Engineering to define and implement requirements Work within a shared development environment to support program capabilities Engage with customers for technical design reviews and verification of system readiness Technologies: Embedded Support Linux Security ARM DevSecOps Flow Hardware Kanban Network PCIe Perl Python Unix More: At RTX, the largest aerospace and defense firm globally, we unite 185,000 innovative minds driven by a shared goal to address the worlds most complex challenges. With our leading businesses and premier operations, we offer unmatched capabilities and opportunities. Our Software Security Sensors and Effectors (S3E) Department is based in Tucson, AZ, where we focus on delivering cutting-edge security software solutions for missile systems. We provide a comprehensive benefits package, including health care, retirement plans, and professional development opportunities, all in a vibrant location known for its beautiful landscapes and warm climate. last updated 28 week of 2026