Principal System Security Engineer - P4
RTX· enterprise· Defense· Oct 23, 2026 · 4d ago
Woburn, MA
In office
Full-time
Principal
$143K–$208K est.
8+ years exp
Job description
Date Posted:
2026-10-23 Country:
United States of America Location:
US-MA-WOBURN-WB2 ~ 225 Presidential Way ~ GODDARD 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:
DoD Clearance: Secret Security Clearance Status:
Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date
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 (P4) to join our elite Systems Security Engineering (SSE) team in developing solutions to protect the Warfighter’s technology advantage. Systems Security Engineering creates holistic security solutions leveraging Cybersecurity, Software Assurance, and Program Protection Implementation on National Security Systems. Join our highly visible team and perform technically challenging assignments, which will directly contribute to protecting our nation and our Warfighters. This is an onsite position at Raytheon in Woburn, MA.
What You Will Do
Interact with the customer to define SSE requirements, architecture, solutions, trade studies and vendor product analysis, costs, implementation, system impacts, and effectiveness
Develop, design, integrate, test, and maintain various cybersecurity capabilities for National Security Systems
Ensure compliance with National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) controls
Develop top-level system requirements and flow down requirements and implementation concepts to subsystem
Develop plans and estimates, task execution, project tracking, reporting, and risk identification and mitigation plans
Consult and assist program management with SSE architecture and issues and deliver technical briefings to leadership
Define security development and test efforts implementation of security controls of networking devices, databases, operating systems, and hardware and software components and provide all associated technical documentation
Integrate cybersecurity development activities and support test and integration activities
Support the development of bids and proposals
Qualifications You Must Have
Typically requires a Bachelor’s Degree in Science, Technology, Engineering or Mathematics (STEM) and 8 years of prior relevant experience
The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance
Experience in System Security Engineering and/or Cybersecurity Engineering and/or System Administration or IT/Network Administration
Experience with NIST Risk Management Framework (RMF)
Qualifications We Prefer
Active and transferable U.S. government issued Secret security clearance
Managerial or leadership experience
Technical hands-on experience with cybersecurity tools and products including anti-virus, host-based or endpoint security solutions including HIDS/HIPS, Multi-Factor Authentication (MFA), and Security Incident and Event Management (SIEM) and centralized auditing tools (e.g.,Splunk, IBM QRadar, Elasticsearch)
Linux Bash scripting or Python scripting experience. Comfort using command line in Linux/Unix and experience with automation/orchestration tools such as Ansible
Security systems engineering involving various computer hardware and software operating systems and application solutions in both a stand-alone, air-gapped environment and in LAN/WAN configurations
Experience with virtualization and containerization technologies, and comfortable with building and securely configuring virtual machines images. Experience with hypervisors such as VMWare, OpenShift, V-Sphere
DoDI 8570.01-M IAT Level-II Compliant Certification (e.g. Security , CISSP, CEH, or equivalent)
Security features and/or vulnerability analysis of various operating systems as defined by DoD or Intelligence agencies. Experience researching vulnerabilities and/or cybersecurity threats. Experience with Tenable Nessus vulnerability scanning tool suite
Experience with IT and/or network and system security administration, including operating system security configuration, hardening/patching operating systems, and account management best practices for UNIX, Microsoft Windows/Server, Red Hat Enterprise Linux. Experience with DISA Security Technical Implementation Guide (STIG) hardening of operating systems a plus
Experience with IT/network administration, securely configuring networking devices (switches, routers, firewalls) and software-defined networking or storage devices. Experience with DISA Security Technical Implementation Guide (STIG) hardening of operating systems a plus
Understanding of Systems Engineering requirements, specifications, and experience implementing DoD and Authorization and Accreditation Processes, RMF controls and developing and maintaining associated certification and accreditation documentation to maintain Authority to Operate (ATO)
Familiar with Program Protection Plan (PPP) required by DoDI 5000.02 and DoDI 5200.39. Understanding of maintaining compliance with DoD technology release and export licensing policies
General understanding of secure architectures, the Systems Engineering development lifecycle, and an understanding Agile software development methodologies and principles
Experience with technical documentation and technical writing
Prior experience working within the defense industry on classified U.S. Government information systems a plus
What We Offer
Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation
Relocation Eligible – Relocation assistance is available
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.
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.
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Benefits
Benefits detected in the listing.
Dental
Vision
401(K)
Paid Time Off
Parental Leave