> Markdown version of [/jobs/ext/4351904-principal-system-engineer-patriot-iptl-onsite](https://www.wearedevelopers.com/jobs/ext/4351904-principal-system-engineer-patriot-iptl-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 System Engineer - Patriot IPTL (Onsite) - **Company:** RTX - **Location:** Tewksbury, MA, United States - **Experience:** Expert - **Salary:** $107,500.0 - $204,500.0 - **Contract:** Permanent contract - **Skills:** Systems Engineering, Software Requirements Analysis, Systems Architecture, Modeling and Simulation - **Published:** October 5, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9218168/principal-system-engineer-patriot-iptl-onsite ## About the Role * Experience with System Engineering across the premier Integrated Air and Missile Defense System in the world. * Ability to collaborate with other engineering disciplines, Quality, Reliability, and program management * Strong communication and leadership skills for coordinating across internal and external stakeholders * Earned Value Management System (EVMS) certification * Program Management (PM) Level 6 certification * Path to Lead System Engineer (LSE) certification Qualifications You Must Have * Typically requires a Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 8 years of prior relevant experience. * Experience managing cost, schedule and execution for technical projects. * Experience leading/contributing to proposals, such as creating BOEs, contributing to leadership proposal reviews. * Active and transferable Secret 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. Qualifications We Prefer * Earned Value Certification. * Program Manager Certification level six (6) or ability to obtain within the first year in the role. ## Description * Responsible for cost, schedule and execution for a Patriot partner country * Ensure System Architecture and Technical Baseline are developed and maintained * Ensure System Requirements are developed and maintained * Ensure Software Requirements are developed and maintained * Ensure Modeling and Simulation products are appropriately scoped and provided * Lead development and reporting of proposal costing efforts a Patriot partner country * Brief Program Management and USG customer on plans and status * Travel as required to meet programmatic objectives. Regular travel between multiple Raytheon locations in Massachusetts is required. Occasional domestic and potential international travel.