Principal System Security Engineer (Cybersecurity) - P4 (Onsite-Tewksbury, MA)

Date Posted: 2026-10-19 Country: United States of America Location: US-MA-TEWKSBURY-TB1 ~ 50 Apple Hill Dr ~ ASSABET 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 well-qualified  Principal System Security Engineer (Cybersecurity) -P4 to join our elite Systems Security Engineering (SSE) team in developing solutions to protect the Warfighter’s technology advantage. Systems Security Engineering creates holistic security solutions leveraging Cyber Security, Software Assurance and Supply Chain Risk Management to support Program Protection Implementation on embedded weapons systems. Join our highly visible team and perform technically challenging assignments, which will directly contribute to protecting our nation and our Warfighters. This is an onsite position at Raytheon in Tewksbury, MA. What You Will Do Coordinate cybersecurity activities across multidisciplinary engineering teams and serve as a technical interface for cybersecurity matters with customers, program leadership, subcontractors, and other stakeholders. Develop plans and estimates, task execution, project tracking, reporting, and risk identification and mitigation plans Ensure compliance with National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) controls Consult and assist program management with SSE architecture and issues Support the development of bids and proposals Define security development and test efforts implementation of security controls of networking devices, databases, operating systems, and hardware and software component Integrate cybersecurity development activities Develop top-level system requirements and flow down requirements and implementation concepts to subsystem Understanding, and compliance with, DoD technology release and export licensing policies Qualifications You Must Have Typically requires a Bachelor’s Degree in Science, Technology, Engineering or Mathematics (STEM) and 8 years of prior relevant experience Active and transferable U.S. government issued 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 in the field of System Security Engineering, computer technology reverse engineering, anti-tamper, cybersecurity, or embedded security Experience with NIST Risk Management Framework (RMF) Experience in technical leadership Qualifications We Prefer 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 Subcontractor management experience with SSE Broad understanding of technology and working knowledge of DODI-S-5230.28 Strategic planning and experience with U.S. Government contract proposals as an Information Assurance Engineer subject matter expert Candidate must exhibit an exceptional degree of ingenuity, creativity, and resourcefulness Excellent interpersonal skills with the ability to interact positively with coworkers, suppliers, stakeholders, and customers in a team environment Experience contributing to a team environment for the purpose of developing creative solutions to technical problems Processes, IA controls and developing and maintaining associated certification and accreditation documentation What We Offer Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation Relocation Eligible – Relocation assistance is available Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: 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. 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. The salary range for this role is 107,500 USD - 204,500 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disabi