Senior Principal Software Security Engineer - S3E

Date Posted:

2026-03-02

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 Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world. 

Software Security Sensors and Effectors (S3E) Department is looking to hire a Senior Principal Software Security Engineer in Tucson, AZ.

• Raytheon Tucson, AZ Location

• Our Culture | RTX Careers

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 implementations.

• Involve with application and embedded software design, development, integration, and testing of real-time missile software.

• Apply System Security principles to the design and implementation of Missile software applications.

• Develop software applications using C and C++ languages on a variety of computing platforms

• Understand real-time software design and the performance implications associated with specific System Security implementations.

• Able to understand how position's efforts affect the “big picture” of the missile system and be able to develop or review detail solutions at the source code level.

• Work closely with the Systems Security Engineering team to define and implement requirements.

• Work in a common development environment to support and facilitate program ability to leverage specific capabilities.

• Interface with customer community to review technical design and support verification of system maturity.

Qualifications You Must Have:

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM) AND a minimum of 10 years of relevant software experience

• Experience with C / C++

• Experience with Xilinx UltaScale+ MPSoC, Versal, or similar Embedded Processors

• Experience with embedded OS like VxWorks, Embedded Linux, or similar

• Embedded Software Security experience

• The ability to obtain and maintain an ***interim Secret U.S. security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

• Experience with validation and verification of software applications

• Experience/Knowledge of any of the following:

• Linux/Unix environment

• Interfacing with FPGAs

• Interfacing with low-level memory drivers

• Inter-processor communication

• ARM Architecture

• Secure boot concepts

• Cryptographic Algorithms

• Experience designing, implementing, testing, or fielding real-time security-oriented solutions on Department of Defense (DoD) programs (embedded experience highly preferred)

• Experience using security-relevant tools and devices for security auditing, network security, host/server security, communication security, or policy management.

• Experience in Agile and DevSecOps environments

• Experience in an Agile/Scrum/Kanban frameworks and development environments

• Experience using software configuration management and bug tracking tools

• Experience with Python / Perl

• Knowledge of modern computer architectures and hardware technologies i