Sr. Systems Security Engineer (Onsite - Cedar Rapids, IA)

Collins Aerospace; Cedar Rapids (IA); On-site; USD 86,000 - 165,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

3 weeks vacation

401(k) with employer matching

Tuition reimbursement

Job summary

Collins Aerospace in Cedar Rapids, IA is seeking an experienced Product Security Engineer to analyze system data flows, model threats, and ensure secure development practices across avionics software. Onsite role requiring US citizenship for security clearance.

The candidate will mentor junior engineers and contribute to industry-standard security certifications. Qualifications include STEM education with 5+ years of relevant experience or an advanced degree with 3+ years, plus strong hands-on

Qualifications

• Typically requires a STEM degree and minimum 5 years of relevant experience, or an Advanced Degree with minimum 3 years of experience.
• U.S. citizenship is required for security clearance; ability to obtain/maintain DoD Secret clearance.
• Experience in product security or secure system design, including threat modeling or fuzzing/penetration testing.
• Embedded software engineering knowledge in Python and Java/C/C++.

Responsibilities

• Analyze system data flows to identify attack vectors and assess risks to products.
• Develop threat models / data flow diagrams for secure data handling.
• Ensure security measures are properly implemented during product development.
• Develop, deploy and automate security tools to identify product security flaws.
• Mentor junior product security engineers and pursue security certifications.
• Review code to identify weaknesses in security implementations.
• Conduct fuzzing and penetration tests to evaluate attack surface robustness.
• Conduct vulnerability assessments of proposed and in-service systems.

Skills

Threat modeling

Fuzzing/pen testing

Embedded software (Python/Java/C/C++)

Product security

Security RMF knowledge

Education

STEM degree (Science, Technology, Engineering or Mathematics)

Advanced degree in related field (MS/PhD)

Tools

SAST tools

Penetration testing tools

Job description

Location

US-IA-CEDAR RAPIDS-107 ~ 400 Collins Rd NE ~ BLDG 107

Location

US-IA-CEDAR RAPIDS-107 ~ 400 Collins Rd NE ~ BLDG 107

Date Posted

2026-08-12

Country

United States of America

Position Role Type

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements

The ability to obtain and maintain a U.S. government issued security clearance is required. 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 after day 1

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.

What You Will Do

• Analyze system data flows to identify attack vectors and assess risks to new and existing products
• Developing threat model / data flow diagrams to ensure data can be properly isolated in motion and at rest
• Ensure proper implementation of security measures during product development
• Develop, deploy and automate security tools for identifying product security flaws
• Help characterize security vulnerabilities for product impact and recommend mitigations
• Follow and guide teams to the adherence of military RMF security processes
• Support organizational adoption of the Avionics SSDLC
• Mentor junior product security engineers advancing their skills and capabilities
• Be encouraged to pursue industry recognized security certifications / post-graduate security degrees
• Reviewing code to identify weaknesses in the implementation of security functions
• Developing and executing fuzzing and penetration tests to evaluate the robustness of the attack surface
• Conducting vulnerability assessments of proposed and in-service systems
• Have opportunities to participate in cybersecurity focused industry committees and working groups

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
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Experience in product security or secure system design; including threat modeling or fuzzing/pen testing
• Embedded software engineering knowledge (Python and Java/C/C++)

Qualifications We Prefer

• Active Secret clearance
• Knowledge of Threat Models and Data Flow Diagrams
• Data/network security implementations with Operating Systems
• Understanding tailoring and hardening of Operating Systems
• Experience with system and application penetration testing
• Experience with SAST and analyzing security impact of code defects
• Executing System & Application Fuzzing / Resiliency Tests
• Experience with Public Key Infrastructure (PKI)
• Industry recognized security certifications (Sec+, OSCP, CISSP, etc.) are desirable
• Networking knowledge (OSI Layers, protocols, etc.)

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!

• 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.