Principal Systems Security Engineer – P4 (Onsite-TX)

Date Posted: 2026-08-27 Country: United States of America Location: US-TX-MCKINNEY-513WC ~ 2501 W University Dr ~ WING C BLDG 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: Secret - Current Security Clearance Status: Active and existing security clearance required on day 1 At RTX, the world's 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 brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. Raytheon is seeking a Principal Systems Security Engineer (SSE) - P4 to join the SSE Sensors, Space, & Air department. The team member will apply their technical knowledge and expertise in the fields of Anti-Tamper and embedded Cybersecurity to ensure secure products are delivered to the end-user. The SSE will be responsible for individual and team leadership contributions to execute program deliverables and milestones, including communications and briefings with internal stakeholders, leadership, and external customers. The candidate will follow the Raytheon Systems Engineering processes to develop, design, integrate, test, and evaluate security solutions within embedded systems. Must be able to work independently and be a motivated self-starter. The individual must possess and maintain an active DoD Secret security clearance and work in classified areas, with up to 25% travel required. This is an onsite position at Raytheon in McKinney, Texas. What You Will Do Perform Critical Program Information (CPI) analysis Perform SSE requirements generation, derivation, decomposition, and analysis Perform and document SSE trade-studies and provide path forward recommendations Generate systems engineering modeling and artifacts, including functional block, sequence, and activity diagrams Develop the program Anti-Tamper Plan Develop and execute Verification and Validation (V&V) Plans and Procedures Present in internal and external customer reviews and program milestones Report tasking status and communications with program and functional leadership Travel up to 25% as necessary What You Will Learn Raytheon Anti-Tamper Learning program Raytheon Cybersecurity Bootcamp 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 Active and transferable U.S. government issued DoD 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 Experience with design/development/implementation in at least one of the following areas: Anti-Tamper (HW, SW, Systems), Cybersecurity, Software Assurance A minimum of 6 years of progressive technical (hands-on) experience related to Systems/Software Engineering architecture, requirements, determination, development, and implementation Experience designing, implementing, testing, and fielding real-time Embedded security-oriented solutions on Department of Defense (DoD) programs Qualifications We Prefer Advanced Degree in Electrical Engineering, Systems Engineering, Mechanical Engineering, Engineering Mechanics, Computer Science, Engineering Science, Business Administration and/or Robotics Experience in generating Anti-Tamper, Cyber Security and/or program protection requirements, design and architecture artifacts, plans, and/or policies Ability to interact with customers to define requirements, solutions, trades, costs, implementation, system impacts, and effectiveness Software, Firmware, & Microelectronics Engineering, Cryptography and FPGA design Experience in System Security Engineering, computer technology reverse engineering, AT, cybersecurity or embedded security Experience in designing, implementing, testing and fielding real-time embedded security-oriented solutions on Department of Defense (DoD) programs with secure systems technologies, methodologies, policies and guidelines Knowledge of Program Protection Plan (PPP) required by DoDI 5000.02 and DoDI 5200.39, including in-depth understanding of balancing risk across the System Security Engineering discipline and domain areas Experience in generating systems requirements, design and architecture artifacts, plans and/or policies Knowledge and understanding of the Systems Engineering Lifecycle Process Experience in design, development and fielding of SSE systems Software, Firmware, & Microelectronics Engineering, Cryptography and FPGA design Experience leading engineering development teams and personnel  Attack threat modeling / Critical Program Information Assessments Experience in the implementation and business growth of SSE implementation throughout the entire life cycle Experience in solutions meeting robust SSE systems security requirements Cyber Certifications in accordance with DoDD 8570/DoDD 8140 such as CISSP, GSLC, CEH Broad understanding of technology and working knowledge of DODI-S-5230.28 Candidate must exhibit an exceptional degree of ingenuity, creativity and resourcefulness