Principal Embedded Software Engineer, Onsite

Date Posted: 2026-07-21 Country: United States of America Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01 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: Active and existing security clearance required on day 1 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 Space and Air division in El Segundo, CA is seeking a Principal Embedded Software Engineer to be part of their product development teams. Raytheon El Segundo, CA Location What You Will Do: Design, develop, and test software based on software trouble reports in an agile, collaborative environment, delivering builds Demonstrate critical thinking skills, the ability to thrive in small, empowered teams, and an intense desire to directly enable our customers’ success Troubleshoot, debug, and optimize existing code for performance and efficiency in complex environments Write and maintain comprehensive documentation for software applications, including system architecture and design specifications Participate in agile execution and continuous improvement Work collaboratively with multiple engineering disciplines to analyze, implement, and test system modification requests to the existing system baseline Ability to get and maintain TS and Special Access Programs (SAP) to meet program's clearance requirements. Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) AND a minimum of 8 years of prior relevant experience. Experience with software development, test, and/or integration using C, C++ Experience with Scripting languages like Python. Experience with System and Software blended skills including:: a) Optimization and Analysis b) System of Systems Resource Management c) Modeling and Simulation – kill chain analysis d) Tracking Software Integration, output analysis, and algorithm development Active and transferable U.S. Government issued Secret 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: Bench support, familiarity with platform engineering tools Clearly communicate plans, status, and issues to teammates and program leadership Ensure the successful integration of software components into delivered products Experience in Object Oriented and scripting languages Ability to work in a fast paced, dynamic environment with time-critical requirements Experience contributing to a team environment for the purpose of developing creative solutions to difficult technical problems Experience working in a Continuous Integration/Continuous Development environment; experience with CI/CD pipelines