> Markdown version of [/jobs/ext/4680667-principal-software-engineer-advanced-radar-systems-onsite](https://www.wearedevelopers.com/jobs/ext/4680667-principal-software-engineer-advanced-radar-systems-onsite). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer - Advanced Radar Systems, Onsite - **Company:** RTX - **Location:** El Segundo, CA, United States - **Experience:** Expert - **Salary:** $118,300 - $224,900 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Agile Methodology, Software Applications, Unit Testing, Unix, Code Review, Software Debugging, Programming Tools, Emulators, Firmware, FreeRTOS, Scrum Methodology, Software Architecture, Real-Time Operating Systems, Regression Testing, Release Management, SAP (Applications), Software Engineering, Software Requirements Analysis, VxWorks, Git, SC Clearance, Bitbucket - **Published:** November 12, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9308429/principal-software-engineer-advanced-radar-systems-onsite ## About the Role * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant software development experience. * Development experience coding in C/C++ or related languages/tools in radar-development software is required. * Experience working on UNIX, VxWorks, Windows or FreeRTOS * Experience working in an agile/scrum team hyper-collaborative team environment using typical agile oriented tool suite. * Experience with design, code, integration, and test of software into a large software baseline and large system * The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer: * Current Secret Clearance * Experience in managing the full software development lifecycle: from requirements definition and planning through system and software architecture, detailed design, implementation, integration, testing, documentation, and production release. * Experience with the following development tools: In-Circuit Emulators (ICE), Debuggers, Simulators, Logic Analyzers, Protocol Analyzers, Oscilloscopes, Git, Bitbucket, MPLAB X * Exhibit strong interpersonal and written communication skills, with the adaptability to quickly learn new technologies and contribute effectively to wide range of projects. * Experience interfacing with Customers to resolve field problems, improving customer satisfaction and reducing downtime. * Experience in leading rapid software development and integration of customized firmware solutions. * Experience with the architectural modernization of legacy single-threaded embedded firmware, transitioning from a main-loop-based design to a FreeRTOS-based multitasking architecture with inter-task communication (IPC) mechanisms. Thus, establishing a robust, fully functional baseline for future development * Experience developing Radar Software applications * Direct experience with Agile methodologies. * Proven analytical skills with the ability to troubleshoot tool and system operation performance issues. * Experience with large complex systems such as airborne sensors. ## Description * Follow stringent software processes for unit testing, software design, and code reviews to ensure high-quality deliverables and compliance. * Deliver robust, reliable, and highly maintainable software products to Customer * Effectively contribute at all phases of the SW development lifecycle, including SW/HW integration and Regression Testing * Develop Real-time software, specifically pertaining to various radar mode independent functions and capabilities, using various languages, tools, applications. * Demonstrate strong investigation and troubleshooting skills to assess issues and develop solutions. * Work effectively with team across multiple disciplines, internal and external * Effectively contribute to program and customer meetings/reviews * Support the program leads as needed regarding cross-functional collaboration, technical decision making, and problem resolution. * Help to ensure performance to technical, cost, schedule, quality. * Support of system and software requirements and architecture generation and analysis as needed. * Contribute to the successful completion of program milestones and customer deliverables * Work Location: Onsite at our El Segundo, CA Campus * Must be able to obtain "special access programs" (SAP/SAR) for continuation of employment., * 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. * This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA , 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: https://www.state.gov/m/ds/clearances/c10978.htm As part of our commitment to maintaining a secure hiring process, 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.