Sr. Embedded Systems Security Engineer (Onsite - Largo, FL) Secret Clearance required

Date Posted: 2026-07-20 Country: United States of America Location: US-FL-LARGO-382SS ~ 7887 Bryan Dairy Rd. ~ BLDG 100 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: Active and existing security clearance required on day 1 Raytheon Company, Managed by Collins Aerospace 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. 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 Senior Embedded System 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 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 Largo, FL.  Relocation assistance is available. ACTIVE and transferrable SECRET clearance required starting day 1. What You Will Do: Support system certification and accreditation efforts, including Risk Management Framework (RMF) Authorization To Operate (ATO) and National Security Agency (NSA) Type 1 Cryptographic Certification Support cybersecurity requirement decomposition, allocation, implementation, and verification utilizing system engineering practices Analyze system requirements, models, and diagrams to identify potential security vulnerabilities Participate in system design discussions and provide security engineering input Collaborate with systems engineers and developers to integrate security considerations into system design Work as part of a team, contributing to a culture of collaboration and continuous learning Maintain awareness of evolving security threats and industry best practices Participate in Security focused-System Verification and Validation including writing test plans and procedures, performing test conduct, and providing remediation recommendation analysis Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience ACTIVE and transferrable SECRET clearance U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Direct experience in System Security Engineering Experience with Risk Management Framework (RMF) applied to mission systems used in disconnected DoD environments Experience with technical security concepts, technologies, and implementations Technical writing skills and ability to develop security documentation Experience interpreting system models, diagrams, and architectures to assess security risks Qualifications We Prefer: Advanced Security-related certifications (e.g., CISSP, Sec+, etc.) and Electrical or Computer Engineering Degree Experience with National Security Agency (NSA) cryptographic certification, Cross Domain Solution (CDS) requirements, and National Information Assurance Partnership (NIAP) Experience working with security protocols used in embedded systems and communications for aerospace environments Familiarity with DOORS, JIRA, Confluence, Cameo (MBSE experience), or other systems modeling and agile tools Familiarity with DoD focused security assessment tools, e.g. SCC, NMAP, Evaluate-STIG, Nessus, ACAS, Vulnerator, eMASSster, etc. Analytical skills with the ability to perform deep dives into system requirements Willingness to learn about satellite systems, communication systems, and evolving security technologies 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