Principal Systems Security Engineer - P4 (Onsite-McKinney,TX)

RTX (Raytheon); McKinney (TX); On-site; USD 140,000 - 190,000; Full time

Job summary

RTX is seeking a Principal Systems Security Engineer (SSE) to join the SSE Sensors, Space, & Air department. The role focuses on Anti-Tamper and embedded cybersecurity to ensure secure products for end-users.

You will lead technical work and contribute to program deliverables, with travel up to 25% and an active DoD Secret clearance required on day one. The candidate will follow Raytheon systems engineering processes to develop, design, integrate, test, and evaluate security solutions within

Qualifications

• Typically requires a Bachelor's Degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 8 years of prior relevant experience.
• Active DoD Secret clearance required prior to start date; U.S. citizenship required for security clearance eligibility.
• Experience in Anti-Tamper, Cybersecurity, Software Assurance in HW/SW/Systems.
• Minimum 6 years of progressive technical experience in Systems/Software Engineering architecture, requirements development and implementation.
• Experience designing, implementing, testing, and fielding real-time embedded security solutions on DoD programs.

Responsibilities

• Perform CPI analysis and SSE requirements generation, derivation and decomposition.
• Develop Anti-Tamper plans and V&V plans and procedures.
• Create modeling artifacts such as functional block, sequence and activity diagrams.
• Lead program reviews with internal stakeholders and external customers.
• Travel up to 25% as necessary.

Skills

Anti-Tamper

Cybersecurity

Embedded security

Software assurance

Clearance awareness

Education

Bachelor's Degree in STEM

Advanced degree (EE, SE, CS, etc.)

Tools

FPGA design

Cryptography

Job description

Date Posted: 2026-10-30

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
• Minimum 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

• Experience in generating Anti-Tamper, Cyber Security and/or program protection requirements, design and architecture artifacts, plans, and/or policies
• Software, Firmware, & Microelectronics Engineering, Cryptography and FPGA design
• Experience in generating systems requirements, design and architecture artifacts, plans and/or policies
• Attack threat modeling / Critical Program Information Assessments
• Cyber Certifications in accordance with DoDD 8570/DoDD 8140 such as CISSP, GSLC, CEH
• Background in both Systems Engineering and Software Engineering practices
• Advanced Degree in Electrical Engineering, Systems Engineering, Mechanical Engineering, Engineering Mechanics, Computer Science, Engineering Science, Business Administration and/or Robotics
• Excellent interpersonal skills with the ability to interact positively with coworkers, suppliers, stakeholders and customers in a team environment
• Excellent written and verbal communication skills

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we