Secure Systems Engineer I (Onsite)

RTX (Raytheon); Cedar Rapids (IA); On-site; USD 57,000 - 109,000; Full time

Benefits offered by this job

Relocation Eligible

Job summary

RTX in Cedar Rapids is seeking a Secure Systems Engineer I to join our Cybersecurity Engineering team onsite. The role focuses on threat modeling, SELinux policy development, fuzzing, and vulnerability assessments to strengthen product security across avionics systems.

Qualified candidates have a STEM degree and experience with C++/Python and Linux. U.S. citizenship is required for this program, with opportunities to contribute to Airworthiness documentation and secure SDLC practices.

Qualifications

• Requires a degree in Science, Technology, Engineering or Mathematics (STEM).
• Coding experience in C++ or Python
• Familiarity with Linux OS

Responsibilities

• Developing threat models and information flow architectures to ensure data can be properly isolated in motion and at rest.
• Implementing mandatory access controls (MAC) through the development of SELinux policies
• Developing and executing fuzzing and penetration tests to evaluate the robustness of the exposed attack surface
• Reviewing code to identify weaknesses in the implementation of security functions
• Conducting vulnerabilities assessments of proposed and in-service systems
• Embedding with development teams to address product security concerns
• Assisting with creation of security documentation to support Airworthiness Certification

Skills

C++

Python

Linux

Education

Bachelor's degree in STEM

Tools

Git

Job description

Date Posted: 2026-10-21

Country: United States of America

Location: US-IA-CEDAR RAPIDS-121 ~ 350 Collins Rd NE ~ BLDG 121

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.

Security Clearance Type: None/Not Required

Security Clearance Status: Not Required

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX.

What You Will Do:

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 Cybersecurity Engineering team needs an additional Secure Systems Engineer I. The Cybersecurity Engineering team is a shared services team that supports the development of products throughout the Avionics Strategic Business Unit wherever the customer has security requirements, or the system is exposed to cyber threats by it's 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 security engineering team pursue security excellence by embedding with the design and implementation teams as subject matter experts supporting our Secure System Development Life Cycle (SSDLC).

Supporting this Cyber Security Engineering team's mission involves: developing threat models and information flow architectures to ensure data can be properly isolated in motion and while at rest, implementing mandatory access controls (MAC) through the development of Security Enhanced Linux (SELinux) policies, developing and executing fuzzing and penetration tests to evaluate the robustness of the exposed attack surface, reviewing code to identify weaknesses in the implementation of security functions, and conducting vulnerabilities assessments of proposed and in-service systems.

• Developing and executing fuzzing and robustness tests to evaluate a products attack surface
• Conducting vulnerability assessments of proposed and in-service systems
• Embedding with development teams to address product security concerns
• Developing threat model / data flow diagrams to ensure data can be properly isolated in motion and at rest
• Assisting w/ implementing mandatory access controls (MAC) through the development of SELinux policies
• Assisting with creation of security documentation to support Airworthiness Certification

Qualifications You Must Have:

• Requires a degree in Science, Technology, Engineering or Mathematics (STEM).
• Coding experience in C++ or Python
• Familiarity with Linux OS

Qualifications We Prefer:

• Strong problem-solving and analytical skills with a demonstrated passion for the field.
• Completed coursework or personal projects focusing on embedded systems security.
• Experience with embedded system integration and testing.
• Understanding of IP networking architectures and concepts.
• Knowledge of version control systems (e.g., Git).
• Proficiency in the Microsoft Office Tool Suite.

What We Offer:

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world.

• At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.
• Relocation Eligible

The salary range for this role is 57,200 USD - 108,800 USD. The salary range provided is a good faith estimate representative of all experienc