Principal System Security Engineer (SSE) – P4 (Onsite-Richardson, TX)

Prattwhitney; Richardson (TX); On-site; USD 118,000 - 225,000; Full time

Benefits offered by this job

Medical

Dental

Vision

Life insurance

Short-term disability

Long-term disability

401(k) match

Flexible spending accounts

Flexible work schedules

Employee assistance program

Parental leave

Paid time off

Holidays

Job summary

RTX in Richardson, TX is seeking a Principal System Security Engineer (SSE) – P4 to join the Cyber Security Engineering team. This onsite role focuses on protecting information systems, developing security solutions, and maintaining security subsystems within a DoD program.

The role requires a TS/SCI clearance, U.S. citizenship, and a solid background in risk management, DoD RMF assessments, and system security engineering across Windows/Linux environments.

Qualifications

• Bachelor’s Degree in Science, Technology, Engineering or Mathematics (STEM) and 8 years of prior relevant experience.
• U.S. citizenship with ability to obtain security clearance (TS/SCI) is required.
• Experience designing, implementing, testing and fielding real-time security-oriented solutions on DoD programs.
• Experience with creating system requirements and flow-down to subsystems.

Responsibilities

• Ensure confidentiality, integrity and availability of IT systems and applications.
• Optimize Windows-based server infrastructure in a distributed information system.
• Provide guidance for administrative tasks including maintenance, account management and system optimization.
• Coordinate technical and process document reviews and resolve integration issues.
• Participate in technical meetings with team members and program personnel.
• Develop and implement systems security solutions.

Skills

Security engineering

Team collaboration

Analytical thinking

Education

Bachelor’s Degree in STEM

Tools

Active Directory

WSUS

VMware

Windows/Linux administration

Job description

Date Posted: 2026-10-30 Country: United States of America Location: US-TX-RICHARDSON-C17 ~ 1717 Cityline Dr ~ CITYLINE C17 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: TS/SCI - 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 (SSE) – P4 to join the Cyber Security Engineering team for a dynamic, high-profile program located in Richardson, TX. This position is in a technical growth area and we need individuals who can apply their technical knowledge and experience to system security engineering and program protection concerns within the key areas of cybersecurity. This role includes the operations and maintenance of classified information system. The SSE will participate in the development of security solutions and will be responsible for executing solutions for a secure system product. Activities will consist of maintaining security subsystem specifications, adherence to security subsystem architecture, participating in Risk Management Framework assessments, authorizations and continuous monitoring. This is an onsite position at Raytheon in Richardson, TX.

What You Will Do

• As an SSE ensure the confidentiality, integrity and availability of IT systems and applications
• Optimizing Windows based server infrastructure in a distributed information system
• Providing guidance in support of administrative tasking, to include corrective/preventive maintenance, recurring operations functions, account management, and system optimization
• Coordinating technical and process document reviews and resolving system administration, engineering, and security integration issues
• Participating in technical meetings with team members and other program personnel
• Participating in the development and implementation of systems security solutions
• Performing hands‑on technical implementation of security solutions comprised of COTS & FOSS technology

Qualifications

• 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 Top Secret Security SCI clearance and the ability to obtain Special Access 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 designing, implementing, testing and fielding real-time security-oriented solutions on Department of Defense (DoD) programs
• Experience in developing system requirements and flow down requirements and implementation concepts to subsystems
• Department of Defense Directive (DoDD) 8140 / 8570 Certification, CompTIA Security+ Certification or equivalent requirements (CompTIA Security+ CE or equivalent certification)
• Experience with the following technologies: Active Directory, WSUS, VMware, and prior systems administration and networking administration experience, Windows / Linux administration, backup, and recovery enterprise suites

We Prefer

• Excellent analytical abilities, critical thinking and creative problem solving
• Experience writing technical documentation
• Excellent written and verbal communication skills
• Direct working experience with NISPOM,JSIG,DFARS and/or DoD/RMF
• Industry certifications include but are not limited to: CISSP, ITIL, Security+

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 118,300 USD - 224,900 USD. The salary range provided is a good faith estimate representative of all experience levels.

• 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 guaranteed and are dependent upon a variety of factors including, 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 Section503 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.