SeniorPrincipalSoftwareSecurityEngineer

**Date Posted:** 2026-05-26 **Country:** United States of America **Location:** US-AZ-TUCSON-801 ~ 1151 E Hermans Rd ~ BLDG 801 (External Site) **Position Role Type:** Onsite **U.S. Citizen, U.S. Person, or Immigration Status Requirements: ** Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​ **Security Clearance Type:** DoD Clearance: Secret **Security Clearance Status:** Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date 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. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. Software Security Sensors and Effectors (S3E) Department is looking to hire a Sr Principal Software Security Engineer in Tucson, AZ. * [Raytheon Tucson, AZ Location](https://careers.rtx.com/global/en/raytheon-tucson,-az-location) * [Our Culture | RTX Careers](https://careers.rtx.com/global/en/culture#benefits) _What You Will Do:_ Our mission is to provide world class Security Software to be used in deployed missile systems. * This position requires understanding of real-time software design and the performance implications associated with specific System Security implem