**Date Posted:** 2025-06-18 **Country:** United States of America **Location:** MA801: Marlborough, MA 1001 Boston Post Road Building 2, Marlborough, MA, 01752 USA **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:** DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world. Raytheon is seeking a well-qualified **Senior Principal System Security Engineer (SSE) – P5** to join the dynamic System Security Engineering team. We need individuals who can apply their technical knowledge and leadership experience to system security engineering and program protection concerns within the key areas of cybersecurity. This role will lead the development of security solutions and will be responsible for leading and executing the security efforts for secure system products.  Activities will consist of security subsystem specifications, security subsystem architecture, interface descriptions, RMF assessment and authorization, and vulnerability assessments. This is an onsite position at Raytheon in Marlborough, MA. **What You Will Do** + Lead a team of System Security Engineers (SSE) to ensure the confidentiality, integrity, and availability of customer systems.  Perform task lead duties (e.g., task planning, product owner, cost account manager). + Support developing plans and estimates, task execution, project tracking, reporting, and risk identification and mitigation plans + Staff the team in partnership with functional leadership in accordance with skill needs and budgets and grow skillsets via Communities of Practice or other forums + Work across a multidisciplined organization + Plan and guide execution plans across a team + Lead the development of bids and proposals in alignment with the IPT + Earned Value Management (EVM) in partnership with respective Control Account Managers + Interact with the customer to define cybersecurity requirements, solutions, trades, costs, implementation, system impacts, and effectiveness + Provide leadership in support of administrative tasking such as system documentation, account management, schedule coordination, test event plans + Support the development of Risk Management Framework (RMF) documents and controls validation testing for Authority to Operate (ATO) accreditations + Support the development of bids and proposals **Qualifications You Must Have** + Typically requires a Bachelor’s degree in Science, Technology, Engineering orMathematics (STEM) and 10 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 fields of computer technology, cybersecurity, Anti Tamper, or other systems security engineering fields + Experience in technical leadership + Experience with System Requirements definition and analysis, System Test and Analysis, Systems Engineering Studies, NIST Risk Management Framework (RMF) **Qualifications We Prefer** + Prior experience with the SPY6 System and/or Missile Defense programs + Ability to understand radar systems technology in the areas of radar design and analysis, and systems engineering development + Knowledge of Earned Value Management principles and metrics + Estimate At Complete and Basis Of Estimate development experience required + Experience supporting hiring activities, including interviews and staffing planning + Familiarity with Integrated Product Development System (IPDS) and CMMI-compliant Gate Reviews + Knowledge of and ability to work within the Agile Scrum development practices + Proven experience with current DoD programs cyber scope with specific experience in large, complex systems + Ability to work in a fast paced, dynamic environment with time-critical requirements + Experience generating Security (anti-Tamper and/or Program Protection and/or Cyber Security) requirements, design and architecture artifacts, plans, and policies + Project management experience, preferably using an Agile framework + Hands on experience configuring and implementing cybersecurity tools + Knowledge of information security toolsets including anti-virus, Vulnerability Assessment, HIDS/ NIDS, host-based or endpoint security solutions, Multi Factor Authentication (MFA), and Security Incident and Event Management (SIEM) and centralized auditing tools + Knowledge of Host Based Security System (HBSS) / Endpoint Security Services (ESS), Assured Compliance Assessment Solution (ACAS) / Tenable Security Center, and Security Content Automation Protocol (SCAP) + Experience with IT and/or network and system security administration, including operating system security configuration and account management best practices for UNIX, MS Windows, Red Hat Enterprise Linux, and CISCO systems + Understanding of Systems Engineering requirements, specifications, and Experience implementing DoD and Federal IA Certification and Accreditation 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: Trust, Respect, Accountability, Collaboration, and Innovation + Relocation Eligible – Relocation assistance is available The salary range for this role is 124,000 USD - 250,000 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 disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. _RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act._ **Privacy Policy and Terms:** Click on this link (http://www.rtx.com/privacy/Job-Applicant-Privacy-Notice) to read the Policy and Terms Raytheon Technologies is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age or any other federally protected class.