Senior Principal Embedded Software Engineer

Software Product Assurance Center’s Software Security Sensors and Effectors Department is seeking a skilled embedded software engineer for a full‑time onsite role in El Segundo, CA. The position requires a U.S. citizen who can obtain and maintain a U.S. government‑issued security clearance (Secret level). The successful candidate will be part of an Agile, Dev Sec Ops  team developing critical embedded software for defense missions.

• Collaborate with Systems Engineering to generate design concepts and system architectural documentation.
• Break down architectural documentation and decompose requirements to support software development activities.
• Participate in Technical Integration Meetings with subcontractors to ensure selected hardware meets hardware and software requirements.
• Design, develop, integrate, and test real‑time embedded solutions using C and C++ on Linux and other RTOS platforms.
• Apply embedded principles to develop hardened software applications.
• Ensure consistency across teams and remove impediments as they arise.
• Employ Agile development practices throughout the software development lifecycle.

• Bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, Software Engineering, or a related field.
• 10+ years of related experience.
• Experience in an Agile and Dev Sec Ops  environment developing and maintaining software on embedded processors or microcontrollers.
• Demonstrated ability to work closely across other engineering disciplines (Systems Engineering, Hardware Engineering, etc.) to debug system and board‑level issues using software tools.
• Experience working in a Linux environment, including modifying and maintaining Linux kernel root file systems.
• Experience developing multi‑threaded applications.
• Ability to obtain and maintain a U.S. security clearance; U.S. citizenship required.

• Proficiency with RTOS systems, Linux device drivers, and/or embedded Linux.
• Experience developing and troubleshooting on embedded targets.
• Experience designing, implementing, testing, or deploying real‑time embedded software solutions.
• Willingness to learn new techniques and apply critical thinking to diagnose customer issues.
• Knowledge of modern computer architectures and hardware technologies, including x86, ARM, and FPGAs.
• Working knowledge of Linux kernel development and device drivers.
• Experience with bare‑metal software development.
• Experience using version control systems such as Git or Subversion.
• Strong knowledge of building and maintaining a code base using CMake and Google Test.

• Salary range: USD 145,600 – 276,800 (depending on experience).
• Health, dental, and vision insurance.
• Life insurance, short‑term and long‑term disability coverage.
• 401(k) plan with company match.
• Flexible spending accounts.
• Flexible work schedules and employee assistance program.
• Parental leave, paid time off, and holidays.
• Eligibility for annual short‑term and long‑term incentive compensation programs.

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, veterans, or any other status protected by law.