Principal Embedded Real-time Software Engineer

Date Posted:The following information aims to provide potential candidates with a better understanding of the requirements for this role.2026-02-09Country:United States of AmericaLocation:US-AZ-TUCSON-805 ~ 1151 E Hermans Rd ~ BLDG 805Position Role Type:OnsiteU.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 clearanceSecurity Clearance Type:DoD Clearance: SecretSecurity Clearance Status:Ability to obtain INTERIM U.S. government issued security clearance is required prior to start dateAt 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.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 innovative solutions for our customers. Join our fast-paced agile teams on the leading edge of technology.As part of the Software Engineering Directorate's (SWE) Effectors Center (EC) team, you will be an integral part of helping Raytheon further our vision to be the global leader in core and next-generation weapon and security solutions. By any measure, Raytheon is an exciting and rewarding place to work. We pride ourselves on developing mission-driven, world-class talent. The result is a workforce that takes pride in the company and consistently delivers superior solutions.Our Principal Embedded Real-Time Software Developer/Integrator is a technical position that works in an Integrated Product Team (IPT) environment to architect, design, implement, test, debug, and deploy Software for Firmware (FPGA) and Hardware solutions that meet current and next generation autonomous avionics systems' needs. Working with a cross-discipline team, the candidate must have experience developing, testing, and integrating software for edge or embedded devices and/or subsystems (like telecom, medical, IoT, automotive, or robotics) where hardware operation, time critical function, functional reliability, mission assurance, and safety might be major concerns.The successful candidate will work with Product Owners, Chief Engineers, Management and other IPT members using Lean and/or Agile practices to ensure that embedded software is designed and developed to reliably operate toward the intended functions.This position is within the Effectors Center of the Software organization, and is an onsite role located in Tucson, AZ.What You Will DoArchitecting, designing, implementing, testing, and debugging integrated embedded real-time software within heterogenous systems composed of firmware and hardware.Working within a cross-discipline team to define, refine, and improve product concept, implementation, testability, and guaranteed, measurable quality.Teaching, coaching, and mentoring less experienced staff.Contributing to proposals as well as preliminary and critical design reviews.Ability to obtain program access.What You Will LearnWorking across a product line in collaboration with other teams.Qualifications You Must HaveTypically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience.Experience including at least two of the following: Embedded C++ Software, Embedded Software Security, Software Architecture Design and implementation.Experience using embedded Real Time Operating Systems (RTOS) (e.g., Green Hills, Integrity, Wind River VxWorks, Linux, etc.).Experience developing complex systems involving the integration of hardware, firmware, and software.Ability to obtain Interim Secret Level U.S. government issued security clearance is required prior to start date with the ability to obtain program access after start. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.Qualifications We PreferFamiliarity with rate monotonic theory, practice, and limitations.Familiarity with layered architectural principles, and their limitations.Familiarity with reading electrical schematics and relating it to software function.Familiarity with reading firmware source like VHDL or Verilog.Familiarity with assembly language in at least one processor/controller family.Experience using lab instruments like power-supplies, digital multi-meters, oscilloscopes, and logic analyzers.Experience with developing device drivers for bare-metal and/or OS applications.Experience leading engineering teams in delivering systems (of various size) involving the integration of hardware and software.What We OfferOur values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.Relocation Offered Based On EligibilityLearn More & Apply Now!Please consider the following role type definition as you apply for this role:Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.Clearance Information: This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here:Location Information: This position is onsite at our campus in beautiful Tucson, AZ. Tucson has a friendly, caring, and laid-back atmosphere, combined with the innovation and energy of a metropolitan region, and recognized as one of America's 10 Best Small Cities. Surrounded by beautiful mountains, colorful Sonoran Desert landscape and majestic saguaro cacti, Tucson is blessed with some of nature's best work. Tucson is known for its bright blue skies, and with more than 310 sunny days per year, Tucson's fantastic weather lets residents enjoy the outdoors year-round.Virtual Fly Over City of Tucson & Community, YouTube Video Links"Raytheon In Tucson": ,-az-location