RTX
aerospace and defense
PrincipalReal-timeSoftwareEngineer
Neural analysis suggests this role is
optimal for Principal candidates.
“Principal Real-time Software Engineer at RTX. Skills: Embedded Real-Time Software Development, Software Architecture Design, Firmware Integration, Hardware Integration, Real Time Operating Systems (RTOS). Architecting, designing, implementing, testing, and debugging integrated embedded real-time software within heterogenous systems composed of firmware and hardware. Defining, refining, and improving product concept, implementation, testability, and guaranteed, measurable quality”
What You'll Achieve.
meet current and next generation autonomous avionics systems’ needs; ensure that embedded software is designed and developed to reliably operate toward the intended functions; deliver superior solutions
Industry & Context.
Active and transferable U. S. government issued security clearance is required prior to start date, U. S. citizenship is required, Ability to obtain INTERIM U. S. government issued security clearance is required prior to start date, Ability to obtain program access, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote
What They're Looking For.
Must Have
Embedded C++ Software, Embedded Software Security, Software Architecture Design and Implementation, embedded Real Time Operating Systems (RTOS), Green Hills, Integrity, Wind River VxWorks, Linux, developing complex systems involving the integration of hardware, firmware, and software, Interim Secret Level U. S. government issued security clearance, U. S. citizenship
Nice to Have
rate monotonic theory, practice, and limitations, layered architectural principles, and their limitations, reading electrical schematics and relating it to software function, reading firmware source like VHDL or Verilog, assembly language in at least one processor/controller family, developing device drivers for bare-metal and/or OS applications, leading engineering teams in delivering systems (of various size) involving the integration of hardware and software
What You'll Do.
and debugging integrated embedded real-time software within heterogenous systems composed of firmware and hardware
and improving product concept
and mentoring less experienced staff
Contributing to proposals as well as preliminary and critical design reviews
How You'll Work.
Team & Collaboration
Working within a cross-discipline team; Working across a product line in collaboration with other teams; Working with Product Owners, Chief Engineers, Management and other IPT members
Process & Methodology
leading engineering teams in delivering systems
Full Job Description
**Date Posted:** 2026-05-14 **Country:** United States of America **Location:** US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805 **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 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. The Software organization develops software applications, including integration and test on missiles, launchers, radars, naval systems, fire control and other complex systems. Our precision software and firmware integrate operating systems, device drivers, networking, and control software to bring together sensor, guidance, and flight control processing features to complete the mission. The Software org is made up of several Centers located across the country, responsible for all aspects of the software development lifecycle. Our 4000+ software engineers design, develop, and build innova
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