> Markdown version of [/jobs/ext/2533293-sr-principal-systems-engineer-onsite](https://www.wearedevelopers.com/jobs/ext/2533293-sr-principal-systems-engineer-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). --- # Sr Principal Systems Engineer - Onsite - **Company:** RTX - **Location:** Tucson, AZ, United States - **Experience:** Expert - **Salary:** $132,400.0 - $251,600.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Systems Engineering, Big Data, C++ (Programming Language), Python (Programming Language), Linux System Administration, MATLAB, Signal Processing, Software Engineering, Subsystems, Orbital Mechanics, Git, Modeling and Simulation, Data Analytics, Grid Computing, Slurm, Ansys, Programming Languages - **Published:** August 14, 2026 - **Apply:** https://www.disabledperson.com/jobs/74235336-sr-principal-systems-engineer-onsite ## About the Role * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience. * Depth in at least one system-level or subsystem-level technical domain: + Guidance, Navigation, and Control + Orbital Mechanics + Mission Planning + Mission Analysis / Performance Analysis + Satellite Technology + Multidisciplinary design, System-of-Systems design * Experience with programming languages such as Python, MATLAB, and/or C++, and familiarity with both Windows and Linux environments. * Experience in one or more of the following skill areas: + System performance, CONOPS + Algorithms and signal processing + Modeling and simulation (i.e., 6-DOF) * Active and transferable Top Secret U.S. government issued security clearance is required prior to start date with the ability to obtain special program access after start. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance., * Advanced Degree in STEM (and can be considered as additional years of experience) * An understanding of vehicle conceptual design, advanced design methods, numerical optimization methods, and data analytics. * Experience in building physics-based models and choosing an appropriate fidelity for the questions being asked. * Highly self-motivated and independent work ethic. Ability to question data and address root cause issues. * Familiarity with Git version control and SLURM grid computing infrastructure. * Experience with Ansys STK ## Description Raytheon's Integrated Solutions Modeling and Architecture Directorate (ISMA) performs customer focused operational analysis, simulation, mission planning and architecture development activities. Supporting this mission are teams driving flexible integrated solutions crossing all product areas (sensors, effectors, command and control, logistics and operations), developing tools and methods to evaluate system level studies and visualization based on customer requirements., The Operations and Mission Analysis (Southwest) department is currently seeking a Systems Engineer to support Raytheon's Advanced Technology organization. Join this highly visible team and perform highly technical assignments, directly contributing to protecting our nation and our warfighters. Advanced Technology incubates new and novel technologies and mission areas for the RTX business, captures new programs, and executes extremely unique special projects. The team welcomes you to join our tradition of excellence through innovation and collaboration. This is an onsite role located in Tucson, AZ. What You Will Do * You will join a team of engineers and analysts to realize team objectives: + Tasking is expected to include a mix of vehicle design and system sizing, mission performance analysis, and trajectory optimization. * Analyze notional missions and hardware for feasibility and engage with engineers across disciplines to improve models and understand performance drivers. + Develop common mission analysis, performance analysis, and mission planning toolsets for a various portfolio. + Utilize grid computing infrastructure to enable generation and analysis of large datasets + Produce visualizations of complex systems and mission CONOPs in STK or similar tools. * Coordinate with product line management and customers * Work closely with programs & AT leadership to develop concepts and mature technologies for new business development and capture. Opportunities to pursue IRAD funding and author intellectual property disclosures. * Engage directly in mission planning application software development and testing ## Related Videos - [Running Secure Life Science Research at Scale using Hybrid GPU HPC and Kubernetes 🧬](https://www.wearedevelopers.com/videos/100355-running-secure-life-science-research-at-scale-using-hybrid-gpu-hpc-and-kubernetes) - [Cloud Vendor Lock-In - Is it just a new version of the Database Abstraction Layers?](https://www.wearedevelopers.com/videos/1185-cloud-vendor-lock-in-is-it-just-a-new-version-of-the-database-abstraction-layers) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) - [Colorful quantum randomness](https://www.wearedevelopers.com/videos/100257-colorful-quantum-randomness) - [Robots are coming into the wild! 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