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

Prattwhitney; Cedar Rapids (IA); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

3 weeks of vacation

401(k) plan with employer matching and

Life insurance

Job summary

Collins Aerospace in Cedar Rapids is seeking a Senior Systems Security Engineer to bolster product cybersecurity across the lifecycle. The role embeds with design teams to mitigate vulnerabilities and strengthen secure development practices within SSDLC.

Candidates should have STEM degrees, 5+ years of experience, and U.S. citizenship for security clearance eligibility. Active Secret clearance is preferred; relocation assistance is available.

Qualifications

• 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.

Responsibilities

• Analyze system data flows to identify attack vectors and assess risks to products.
• Develop threat models/data flow diagrams to isolate data in motion and at rest.
• Ensure security measures are implemented during product development.
• Develop and deploy security tools to identify product security flaws.
• Mentor junior product security engineers and support SSDLC adoption.
• Review code for weaknesses in security implementations.
• Conduct fuzzing and penetration tests to evaluate attack surface.

Skills

Threat modeling

Fuzzing

Penetration testing

Embedded software

Python

Java/C/C++

Education

Bachelor’s degree in STEM

Tools

SAST

PKI

Security testing tools

Job description

Date Posted: 2026-08-12 Country: United States of America Location: US-IA-CEDAR RAPIDS-107 ~ 400 Collins Rd NE ~ BLDG 107 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.

The Product Cybersecurity team is recruiting Senior Systems Security Engineer. Our shared services team supports the development of products throughout the company wherever the customer has security requirements, or the system is exposed to cyber threats by its connectivity or operational use. We develop tools and testing techniques to highlight residual defects in product design or implementation. These defects can lead to vulnerabilities that negatively impact the confidentiality, integrity, or availability of a system. Members of the team pursue security excellence by embedding with the design and implementation teams as subject matter experts supporting our Secure System Development Life Cycle (SSDLC). This role will be worked onsite in Cedar Rapids, IA. and will require an active or ability to obtain a SECRET clearance. Relocation assistance is available.

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 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!

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.

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.

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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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.