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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer (Mission Systems) - **Company:** RTX - **Location:** McKinney, TX, United States - **Experience:** Expert - **Salary:** $86,800.0 - $165,200.0 - **Contract:** Permanent contract - **Skills:** Systems Engineering, C++ (Programming Language), Static Program Analysis, Computer Engineering, Continuous Integration, Software Debugging, Linux, Firmware, Design of User Interfaces, Microsoft Visio, Scrum Methodology, Software Architecture, Real-Time Operating Systems, Software Tools, Software Configuration Management, Software Engineering, Software Systems, Subsystems, Systems Integration, VxWorks, Real Time Systems, Test-Driven Development (TDD), Gitlab, Git, SC Clearance, Devsecops, Artifactory - **Published:** October 5, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=0a69bfd1b8a42907 ## About the Role 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, Raytheon has an opportunity for a Senior Software Engineer to join our Mission Systems Engineering Team in the DFW area. We're seeking a highly capable Senior Software Engineer with strong systems thinking, deep software architecture experience, and domain knowledge in advanced defense or aerospace systems. This role is ideal for someone who thrives in a fast-paced environment, collaborates across disciplines, and can drive software design at the system-of-systems level, * Typically requires a Bachelor's degree in Science, Technology, Engineering, Mathematics, or STEM and a minimum of 5 years of prior engineering experience. Or an Advanced degree and 3 years of relevant experience. * Experience with software architecture for complex system of systems, subsystem interface design, and software system integration and test. * Experience with engineering and modeling tools (Cameo or Enterprise Architect and MS Visio), along with familiarity with MOSA standards including OMS and AMS-GRA. * Experience developing, testing, and integrating real-time software applications in C++ or related software languages and experience with Linux, VxWorks, or other real-time operating systems. * Product-domain experience in at least one of the following areas: + RF or EO/IR Sensors + Electronic Warfare + Effectors + Communications + Multi-domain Mission Systems * 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 * Demonstrated collaboration with Systems, Software, Firmware, and Hardware engineering teams. * Ability to develop and present complex technical material at design reviews such as PDR and CDR. * Ability to work effectively in fast-paced, dynamically changing environments. * Proactive problem-solving and strong ownership mindset. * Experience working in system integration lab (SIL) environments with physical hardware including test benches and simulators. * Experience with Agile Scrum development practices. * Familiarity with DevSecOps pipelines including static analysis, automated build and test, CI/CD, and test-driven development. * Hands-on experience with Git for version control and GitLab or Artifactory for repository management. * Active and transferable U.S. government issued Secret security clearance with special program access. ## Description This position is for a Senior Software Engineer with professional experience in the development and implementation of software for real-time applications. Deliverables include but not limited to: * Apply systems thinking to software engineering challenges including CONOPS development, V-model alignment, specification tree analysis, and system decomposition. * Perform software high-level design at the System-of-Systems level and design, develop, and refine subsystem and platform interfaces for both hardware and software. * Develop Software Requirements Specifications (SRS). * Collaborate with Systems Architects, Technical Leads, and Senior Technical Fellows and cross-discipline teams (Systems Engineering, Algorithms, Firmware and Hardware) on design exploration and problem solving. * Architect, implement, test, and debug embedded real-time software in heterogeneous hardware, firmware, and software systems. * Participate in major design reviews including PDR and CDR. * Mentor less experienced engineers. * Occasional business travel may be required, up to 5%. * Onsite role in McKinney, Texas, with local residency or relocation required., + 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: https://www.state.gov/m/ds/clearances/c10978.htm + Location Information: This position is onsite at our campus in beautiful McKinney, TX. https://careers.rtx.com/global/en/raytheon-north-texas-location * We Are RTX 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.