Senior Systems Security Engineer - P3 (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 Senior Systems Security Engineer (SSE) - P3 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 5 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 with design/development/implementation in at least one of the following areas: Anti-Tamper (HW, SW, Systems), Cybersecurity, Software Assurance
• A minimum of 3 years of progressive technical (hands‑on) experience related to Systems/Software Engineering architecture, requirements, determination, development, and implementation
• 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

Qualifications We Prefer

• Advanced Degree in Electrical Engineering, Systems Engineering, Mechanical Engineering, Engineering Mechanics, Computer Science, Engineering Science, Business Administration and/or Robotics
• Cyber Certifications in accordance with DoDD 8570/DoDD 8140 such as CISSP, GSLC, CEH
• 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 designing, implementing, testing, and fielding real‑time Embedded security-oriented solutions on Department of Defense (DoD) programs
• 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
• 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
• Broad understanding of technology and working knowledge of DODI-S-5230.28
• Excellent written and verbal communication skills
• 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 in a team environment for the purpose of developing creative solutions to technical problems
• Experience with design/development/implementation in at least one of the following areas: Anti-Tamper (HW, SW, Systems), Cybersecurity, Software Assurance

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.

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 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 86,800 USD - 165,200 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.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry‑leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.