Sr. Embedded Systems Security Engineer (Onsite - Largo, FL or Marlborough, MA) 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:

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.

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 Sr. 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 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 or Marlborough, MA. and will require an active SECRET clearance. Relocation assistance is available. 

What You Will Do:

• Perform RMF Authorization to Operate (ATO) and NSA Type 1 Cryptographic Certification activities, including development and maintenance of required security documentation, evidence, and assessment artifacts

• Perform cybersecurity requirement decomposition, allocation, implementation, and verification across assigned system components and interfaces using systems engineering practices

• Analyze system requirements, models, interfaces, and architectures to identify security vulnerabilities, develop mitigation recommendations, and maintain traceability between security requirements and system implementation

• Lead security engineering inputs for assigned system design reviews and document security risks, requirements, recommendations, and resolution status

• Coordinate with systems engineers and software/hardware developers to integrate security requirements into system designs and track security issues through verification and closure

• Develop and execute security-focused Software Verification & Validation activities, including test plans, test procedures, test cases, test conduct, results documentation, and remediation analysis

• Coordinate assigned cybersecurity engineering activities across systems engineering, software, hardware, and test organizations and provide status and technical findings to program leadership

• Assess applicable security threats, vulnerabilities, and industry practices and evaluate their impact on assigned system architectures, requirements, and implementations

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience, or an Advanced Degree in a related field and a minimum of 3 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 cybersecurity or product security engineering activities for embedded, aerospace, defense, or other mission-critical systems

• Experience developing or executing security-focused system verification and validation activities, including test plans, procedures, test conduct, and results analysis

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

• Experience decomposing, allocating, implementing, and verifying cybersecurity requirements using systems engineering practices

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

• Experience developing technical security documentation, including security requirements, assessments, certification artifacts, or verification documentation

Qualifications We Prefer:

• Active and transferable TOP SECRET clearance

• Experience with NSA cryptographic certification, Cross Domain Solution (CDS) requirements, and NIAP

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

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

• Experience with security protocols used in embedded systems and communications for aerospace environments

• Experience using DoD-focused security assessment tools such as SCC, NMAP, Evaluate-STIG, Nessus, ACAS, Vulnerator, eMASS, etc

• Experience with satellite systems, communication systems, or other mission-critical embedded systems

• Ability to collaborate across engineering disciplines and communicate technical security risks and recommendations to engineering and program leadership

• Demonstrated ability to drive security activities to completion and influence technical decisions

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, 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 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 86,800 USD - 165,200 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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