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

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

Benefits offered by this job

Paid parental leave

Retirement match

Learning budget

30 days PTO

Job summary

RTX in Richardson, TX is seeking a Principal System Security Engineer (SSE) to join the Cyber Security Engineering team. This onsite role focuses on applying security engineering principles to secure DoD programs and protected information systems.

You will lead hands-on implementation, RMF activities, and ongoing system monitoring in a high-visibility program environment, ensuring the confidentiality, integrity, and availability of critical IT assets.

Qualifications

• Bachelor’s degree in STEM and 8+ years of relevant security engineering experience.
• Active TS/SCI clearance required on start date.
• Experience with DoD RMF, DoD directives and security compliance frameworks (NISPOM/JSIG/DFARS).
• Experience with AD, WSUS, VMware, Windows/Linux administration, backup and recovery.

Responsibilities

• Ensure confidentiality, integrity and availability of IT systems and applications.
• Lead design and implementation of security solutions for DoD programs.
• Perform RMF assessments, authorizations and continuous monitoring.
• Coordinate technical reviews and resolve security integration issues across teams.

Skills

Security engineering

Risk management

Communications

Team collaboration

Education

Bachelor's degree in STEM

Tools

Active Directory

WSUS

VMware

Windows Server

Linux administration

Networking administration

Job description

# Principal System Security Engineer (SSE) – P4 (Onsite-Richardson, TX)RTX · rtx.comCategory: Security EngineeringLocation: US-TX-RICHARDSON-C17 ~ 1717 Cityline Dr ~ CITYLINE C17Level: Staff / PrincipalClearance: TS/SCI## Quality of lifeWhat the posting states. Hover or tap a perk to see the line it came from.* Paid parental leave* Retirement match* Learning budget* 30 days PTODate Posted:2026-10-30Country:United States of AmericaLocation:US-TX-RICHARDSON-C17 ~ 1717 Cityline Dr ~ CITYLINE C17Position Role Type:OnsiteU.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 clearanceSecurity Clearance Type:TS/SCI - CurrentSecurity Clearance Status:Active and existing security clearance required on day 1At 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 applicationsOptimizing Windows based server infrastructure in a distributed information systemProviding guidance in support of administrative tasking, to include corrective/preventive maintenance, recurring operations functions, account management, and system optimizationCoordinating technical and process document reviews and resolving system administration, engineering, and security integration issuesParticipating in technical meetings with team members and other program personnelParticipating in the development and implementation of systems security solutionsPerforming hands-on technical implementation of security solutions comprised of COTS & FOSS technology Qualifications You Must Have Typically requires a Bachelor’s Degree in Science, Technology, Engineering or Mathematics (STEM) and 8 years of prior relevant experienceActive 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) programsExperience in developing system requirements and flow down requirements and implementation concepts to subsystemsDepartment 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 Qualifications We Prefer Excellent analytical abilities, critical thinking and creative problem solvingExperience writing technical documentationExcellent written and verbal communication skillsDirect working experience with NISPOM,JSIG,DFARS and/or DoD/RMFIndustry certifications include but are not limited to: CISSP, ITIL, Security What We OfferOur 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 InnovationRelocation Eligible – Relocation assistance is availablePlease 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.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 118,300 USD - 224,900 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.