Principal Systems Security Engineer – P4 (Onsite-TX)

Prattwhitney; McKinney (TX); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Medical

Dental

Vision

401(k) match

Relocation eligible

Job summary

RTX in McKinney, Texas seeks a Principal Systems Security Engineer (SSE) - P4 to apply Anti-Tamper and embedded Cybersecurity expertise on DoD programs. You will lead teams, communicate with stakeholders, and develop security solutions following SE processes; travel up to 25%.

Candidates must hold a DoD Secret clearance, U.S. citizenship, and a STEM degree; experience in anti-tamper, cybersecurity, and real-time embedded security for DoD programs is required.

Qualifications

• Bachelor's degree in Science, Technology, Engineering or Mathematics (STEM) and at least 8 years of relevant experience.
• Active DoD Secret security clearance and U.S. citizenship are required prior to start date.
• Experience in Anti-Tamper, Cybersecurity or Software Assurance.
• 6+ years of progressive technical experience in Systems/Software Engineering architecture and development.
• Experience designing and fielding real-time embedded security solutions on DoD programs.
• Ability to interact with customers to define requirements, solutions and costs.

Responsibilities

• Perform CPI analysis and SSE requirements derivation.
• Lead SSE trade-studies and provide path forward recommendations.
• Create systems engineering diagrams and Anti-Tamper plans.
• Develop and execute V&V plans and procedures.
• Present to internal and external reviews and travel as needed.

Skills

Security engineering

Anti-Tamper

Embedded systems

DoD program experience

Team leadership

Education

Bachelor's Degree in STEM

Advanced Degree

Job description

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.

Principal Systems Security Engineer (SSE) - P4

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
• 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
• Background in both Systems Engineering and Software Engineering practices
• Experience in System Integrity, NSA Security design, or related field
• Experience with certification and accreditation of cryptographic, anti-tamper, and other security-related engineering products / systems
• Experience with multi-level security solutions (MLS)

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.

What We Offer

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

• Trust
• Respect
• Accountability
• Collaboration
• 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 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.

Benefits

• 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
• 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.