Principal Embedded Systems Security Engineer (Hybrid - Largo, FL) Secret clearance required

Date Posted:

2026-08-24

 Country:

United States of America

 Location:

US-FL-LARGO-382SR ~ 7887 Bryan Dairy Rd ~ BLDG 600

 Position Role Type:

Hybrid

 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.

You will be a member of the Collins Product Cybersecurity Organization (PCO) supporting strategic defense and protected communication systems programs. We are a growing business developing new products in an aggressive and competitive market. The new designs are exciting and technically challenging.

The Product Cybersecurity Engineering DoD East Florida team is hiring a Principal Embedded Systems Security Engineer to support programs for our US military and various international customers, keeping the world safe from foreign threats. This team supports multiple Collins contracts and is seeking to fill roles across several open contracts – 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 proficient 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 hybrid in Largo, FL; days onsite pending business needs. Requires an active SECRET clearance. Relocation assistance is available.

What You Will Do:

Lead RMF Authorization to Operate (ATO) and NSA Type 1 Cryptographic Certification activities, including planning, development and review of security documentation, assessment evidence, findings, and remediation activities

Lead cybersecurity requirement decomposition, allocation, implementation, and verification across system-level architectures, interfaces, and major system components

Perform system-level analysis of requirements, models, interfaces, and architectures to identify security vulnerabilities and establish security requirements, mitigations, and verification methods

Lead security engineering participation in system design reviews and document system-level security risks, technical recommendations, and required corrective actions

Lead integration of security requirements across systems engineering, software, hardware, and test disciplines and track security issues through implementation, verification, and closure

Lead security-focused SV&V activities, including development of test strategies, test plans, test procedures, test cases, test conduct, results analysis, and remediation recommendations

Coordinate cybersecurity engineering activities across multiple engineering disciplines and resolve security issues affecting system requirements, architecture, design, implementation, and verification

Evaluate security threats, vulnerabilities, technologies, and applicable security guidance and determine impacts to system architectures, requirements, and certification activities

Provide technical direction to other security engineers and review security engineering products, analyses, and verification results for assigned systems

Qualifications You Must Have:

Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience, or an Advanced Degree in a related field and a minimum of 5 years of experience.

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

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

Experience performing or leading cybersecurity or product security engineering activities for embedded, aerospace, defense, or other mission-critical systems

Experience applying Risk Management Framework (RMF) processes to system certification, authorization, or security assessment activities

Experience developing and reviewing technical security documentation, including security requirements, security assessments, certification artifacts, and verification documentation

Experience decomposing, allocating, implementing, and verifying cybersecurity requirements across system architectures, interfaces, and components

Experience analyzing system requirements, models, diagrams, interfaces, and architectures to identify security risks and develop security requirements and mitigation strategies

Experience leading or coordinating security-focused system verification and validation activities, including development of test strategies, test plans, procedures, test conduct, results analysis, and remediation recommendations

Experience coordinating cybersecurity engineering activities across systems engineering, software, hardware, and test organizations

Qualifications We Prefer:

Active and transferable TOP SECRET clearance

Extensive experience with NSA cryptographic certification, Cross Domain Solution (CDS) requirements, and NIAP

Advanced experience with DOORS, JIRA, Confluence, Cameo (MBSE), or other systems modeling and agile tools

Advanced Security-related certifications (e.g., CISSP) and/or an Electrical or Computer Engineering degree

Extensive experience with security protocols used in embedded systems and communications for aerospace environments

Experience leading the use of DoD-focused security assessment tools such as SCC, NMAP, Evaluate-STIG, Nessus, ACAS, Vulnerator, eMASS, etc

Experience with satellite systems, communication systems, and complex mission-critical embedded systems

Experience providing technical direction and mentoring to other security engineers

Demonstrated ability to lead security efforts across multidisciplinary engineering teams, resolve complex technical issues, and drive results

Demonstrated ability to communicate complex security risks and recommendations to engineering, program, and customer leadership

What We Offer:

Some of our competitive benefits package includes:

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, includi