Embedded Systems Security Engineer II (Onsite - Marlborough, MA) Secret cleararance required

Collins Aerospace; Marlborough (MA); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) plan with company match

Tuition reimbursement

Life insurance and disability coverage

Parental leave and wellness programs

Job summary

Collins Aerospace is seeking an Embedded System Security Engineer II to support DoD and international programs in Marlborough, MA. The role involves requirement allocation, security architectures, vulnerability analysis, and collaboration with cross-functional teams to ensure secure product delivery.

You will participate in RMF activities, develop test plans, and contribute to system verification and validation. A SECRET clearance is required, and onsite work is expected.

Qualifications

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field.
• 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 supporting cybersecurity or product security activities for embedded, aerospace, defense, or other mission-critical systems
• Experience supporting Risk Management Framework (RMF) activities, security assessments, or system authorization activities
• Experience analyzing system requirements, models, diagrams, or architectures to identify security requirements or risks
• Experience developing technical documentation, including security requirements, assessments, test documentation, or certification artifacts
• Experience supporting system or software verification and validation activities, including development or execution of test procedures and documentation of test results

Responsibilities

• Support system certification and authorization activities, including RMF Authorization to Operate (ATO) by preparing assigned documentation and artifacts
• Support cybersecurity requirement decomposition, allocation, implementation, and verification for system components
• Analyze system requirements, models, interfaces, and diagrams to identify security vulnerabilities
• Participate in system design reviews and document security engineering inputs and findings
• Work with engineers to incorporate security requirements into system designs and track issues to resolution
• Develop test cases, plans, and procedures for SV&V activities and document results
• Participate in cybersecurity engineering reviews and provide status and technical inputs
• Review security threats, vulnerabilities, and industry guidance and identify impacts

Skills

RMF

Security requirements

System security

Cybersecurity analysis

Education

STEM degree

Tools

DOORS

JIRA

Confluence

Cameo MBSE

Job description

Date Posted: 2026-08-24
Country: United States of America
Location: US-MA-MARLBOROUGH-MA1 ~ 1001 Boston Post Rd ~ BLDG 1
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 Embedded System Security Engineer II 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 have experience 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. and will require an active SECRET clearance. Relocation assistance is not available.

What You Will Do

• Support system certification and authorization activities, including RMF Authorization to Operate (ATO) and NSA Type 1 Cryptographic Certification, by preparing assigned documentation, evidence, and assessment artifacts
• Support cybersecurity requirement decomposition, allocation, implementation, and verification for assigned system components using systems engineering practices
• Analyze system requirements, models, interfaces, and diagrams to identify and document potential security vulnerabilities and trace findings to applicable security requirements
• Participate in system design reviews and document security engineering inputs, findings, and recommendations for assigned system elements
• Work with systems engineers and software/hardware developers to incorporate assigned security requirements into system designs and track identified issues through resolution
• Support security-focused System Verification and Validation (SV&V) activities by developing test cases, test plans, and procedures; participating in test conduct; documenting results; and supporting remediation analysis
• Participate in cybersecurity engineering reviews and working groups and provide status, findings, and technical inputs for assigned activities
• Review applicable security threats, vulnerabilities, and industry guidance and identify impacts to assigned system components

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field
• 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 supporting cybersecurity or product security activities for embedded, aerospace, defense, or other mission-critical systems
• Experience supporting Risk Management Framework (RMF) activities, security assessments, or system authorization activities
• Experience analyzing system requirements, models, diagrams, or architectures to identify security requirements or risks
• Experience developing technical documentation, including security requirements, assessments, test documentation, or certification artifacts
• Experience supporting system or software verification and validation activities, including development or execution of test procedures and documentation of test results

Qualifications We Prefer

• Active and transferable TOP SECRET clearance
• Experience with NSA cryptographic certification, Cross Domain Solution (CDS) requirements, or NIAP
• Familiarity with DOORS, JIRA, Confluence, Cameo (MBSE), or other systems modeling and agile tools
• Security-related certifications (e.g., Security+, CISSP) and/or an Electrical or Computer Engineering degree
• Experience with security protocols used in embedded systems and communications for aerospace environments
• Familiarity with DoD-focused security assessment tools such as SCC, NMAP, Evaluate-STIG, Nessus, ACAS, Vulnerator, eMASS, etc
• Willingness to learn about satellite systems, communication systems, and evolving security technologies
• Demonstrated collaboration, effective communication, customer focus, and ability to drive results

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 illnessinsurance, 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!

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.

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.