Sr. Principal Embedded System Security Engineer (Onsite - Marlborough, MA or Largo, FL) Secret Clearance required

Date Posted:

2026-08-19

 Country:

United States of America

 Location:

US-MA-MARLBOROUGH-MA4 ~ 1001 Boston Post Rd ~ BLDG 4

 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

Raytheon Company, Managed by Collins Aerospace

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.

Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

The Product Cybersecurity Engineering team is hiring a Senior Principal Embedded Systems Security Engineer to support programs for our US military, keeping the world safe from foreign threats. Our goal is to align each new hire with a position that best suits their skills and allows for career growth. The ideal candidate will be skilled in requirement allocation and decomposition, analyzing system architectures, designing security features and principles, assessing security vulnerabilities (scanning), and formal cybersecurity test and evaluation (CT&E). The candidate will report to the Senior Manager of Cybersecurity Engineering and work collaboratively with cross-functional engineering teams on the program they support.

This role will be worked onsite in Marlborough, MA or Largo, FL. Relocation assistance not available.

Requires an active and transferrable SECRET clearance.

What You Will Do:

Work with customers and internal stakeholders to define cybersecurity requirement decomposition, allocation, implementation, and verification utilizing system engineering practices; providing guidance and direction related to security technologies

Define cybersecurity requirements, design, and architecture artifacts; collaborating with program and engineering disciplines and ensuring cybersecurity solution alternatives

Lead system design discussions and provide cybersecurity engineering input

Lead and collaborate with systems engineers and developers to integrate cybersecurity considerations into system design

Lead cybersecurity focused System Verification and Validation including writing test plans and procedures, performing test conduct, writing and conducting analyses, and providing remediation recommendations

Own and generate cybersecurity related documentation (i.e., e.g.; Risk Management Framework System Security Plan, Risk Assessment Report, Plan of Actions and Milestones)

Lead as part of a team of System Security Engineers, fostering a culture of collaboration and continuous learning

Champion awareness of evolving security threats and industry best practices; becoming a Subject Matter Expert (SME) and valued member of our System Security Engineering team

Qualifications You Must Have:

Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience

ACTIVE and transferable Secret U.S. government issued SECRET security clearance is required prior to start date

U.S. citizenship is required , as only U.S. citizens are eligible for security clearances

Experience in (system) requirement definition, allocation, and decomposition; preferably with embedded systems.

Experience in generating Verification Items (VIs) and determining formal verification methods (inspection, analysis, demonstration, and/or test) for allocated requirements

Experience with cybersecurity, Risk Management Framework (RMF), and embedded cryptography

Experience with requirement management tools (e.g.; DOORS, JIRA, CONFLUENCE); including Model-Based Systems Engineering (MBSE) tools (e.g.; JAMA, CAMEO)

Qualifications We Prefer:

Active and transferable TOP SECRET clearance

Familiarity with satellite systems, communication systems, and evolving security technologies; with a strong desire to develop and enhance this knowledge

Direct experience with National Security Agency (NSA) cryptographic certification

Direct experience with Program Protection Plan (PPP) and Program Protection Implementation Plan (PPIP) required by DoDI 5000.2 and DoDI 5200.39

Direct experience as an Agile Scrum Master and/or Product Owner

Direct experience as a Cost Account Manager (CAM) and/or Basis of Estimate (BOE) author

RTX Earned Value and Basis of Estimate Certifications; or the willingness to obtain these within six (6) months of start

Cybersecurity-related certifications (e.g., CISSP, Security Plus, etc.)

Self-starter requiring limited direction and minimal supervision

What We Offer:

Medical, dental, and vision insurance

Three weeks of vacation for newly hired employees

Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option

Tuition reimbursement program

Student Loan Repayment Program

Life insurance and disability coverage

Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection

Birth, adoption, parental leave benefits

Ovia Health, fertility, and family planning

Adoption Assistance

Autism Benefit

Employee Assistance Plan, including up to 10 free counseling sessions

Healthy You Incentives, wellness rewards program

Doctor on Demand, virtual doctor visits

Bright Horizons, child and elder care services

Teladoc Medical Experts, second opinion program

And more!

Learn More & Apply Now!

Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market.

Collins Aerospace makes modern flight possible. Of course, that wouldn’t be possible without the capabilities and technologies of our organization, as well as our engineers – a highly skilled, accomplished network that spans more than 180 sites, 24 countries and 6 Strategic Business Units (SBUs).

Our industry-leading experts are setting the standards for the aerospace industry and paving the way for the future. But as new challenges present themselves, we need fresh, creative and motivated minds to overcome these hurdles, help us break barriers and achieve new levels of innovation. Do you have what it takes to join a global organization that doesn’t shy away from big opportunities? If so, we invite you to join our ranks and create the next generation of aerospace technologies.

Together, we will nurture an engineering culture that values intellectual curiosity, risk takers and integrity. A place where we will challenge ourselves, our teams, and the status quo and where we will work to find a way – the right way – to achieve what others can only dream of.

* Please consider the following role type definitions as you apply for this role.

Onsite : Employees who are wor