Principal System Security Software Engineer

Principal System Security Software Engineer – Tucson, AZ

Onsite full‑time role with RTX in Tucson, AZ.

Requires active U.S. government issued DoD Secret security clearance prior to start and U.S. citizenship.

• Design, develop, integrate, and test real‑time missile software and firmware.
• Develop software applications using C and C++ on a variety of computing platforms.
• Understand real‑time software design and the performance implications of system security implementations.
• Work closely with the Systems Security Engineering team to define and implement requirements.
• Interface with customer community to review technical design and support verification of system maturity.

• Bachelor’s degree in Science, Technology, Engineering, Mathematics or related field.
• Minimum 8 years of professional experience.
• Experience with C/C++ programming.
• Experience with AMD Xilinx Ultra Scale+ or Versal MPSoC or similar embedded processors.
• VxWorks OS experience.
• Embedded software security experience.
• Active and transferable U.S. government issued security clearance.
• U.S. citizenship.

• MS degree in Computer Science, Computer Engineering, Software Engineering, Electrical Engineering, Mathematics or related discipline.
• Experience with qualification and verification of software applications.
• Experience in Linux/Unix environments.
• Experience interfacing with FPGAs and low‑level memory drivers.
• Experience with inter‑processor communication.
• Knowledge of ARM architecture secure boot concepts and cryptographic algorithms.
• Experience with Raytheon Ultra Stack hardware.
• Experience designing, implementing, testing, or fielding real‑time security‑oriented solutions on DoD programs (embedded experience 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 Dev Sec Ops  environments, including Scrum or Kanban frameworks.
• Experience with software configuration management and bug tracking tools.
• Experience with Python or Perl.
• Knowledge of modern computer architecture and hardware technologies such as PCIe, GPIO, I2C, SATA, FPGA, ASIC.

USD 107,500 – 204,500 annually.

• Medical, dental, vision, life insurance.
• Short‑term and long‑term disability, 401(k) match.
• Flexible spending accounts, flexible work schedules.
• Employee assistance program, employee scholar program.
• Parental leave, paid time off, holidays.
• Short‑term and long‑term incentive compensation (dependent on level).

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified individuals with a disability and protected veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.