Software Security Engineer II

RTX (Raytheon); McKinney (TX); On-site; USD 100,000 - 130,000; Full time

Job summary

RTX in McKinney, TX is seeking a Software Security Engineer II for onsite work with our Software Product Assurance team. You will implement security principles for embedded real-time sensor software and develop applications using multiple languages across varied platforms.

The role requires a STEM degree with 2+ years of software experience or a Master’s in STEM, proficiency in C/C++, Python or Perl, and Agile experience. U.S.

Qualifications

• Bachelor's or Master’s degree in STEM with relevant software experience.
• Proficient in C/C++ and scripting languages such as Python or Perl.
• Experience working in Agile/Scrum/Kanban development environments.
• Ability to obtain interim Secret U.S. clearance; U.S. citizenship required.

Responsibilities

• Provide world-class security software for embedded sensor systems across platforms.
• Apply embedded security principles in design, development, integration and testing.
• Develop multi-language software applications on diverse computing platforms.
• Ensure Software Product Assurance processes are followed on programs.
• Understand real-time software design and performance implications of security implementations.
• Collaborate with cross-functional teams to enable TDMC-based execution.

Skills

C/C++

Python

Agile/Scrum/Kanban

Education

Bachelor's in STEM

Master's in STEM

Tools

Linux

RTOS

Yocto/Petalinux

Job description

Date Posted: 2026-10-06

Country: United States of America

Location: US-TX-MCKINNEY-513PW ~ 2501 W University Dr ~ PW BLDG

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: DoD Clearance: Secret

Security Clearance Status: Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

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.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today's mission and stay ahead of tomorrow's threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Software Product Assurance team in McKinney, TX is seeking a highly motivated Software Security Engineer II to work onsite.

What You Will Do:

• Our mission is to provide world class Security Software to be used in developing and supporting deployed sensor systems on various platforms.
• Implement Software Security principles for embedded software design, development, integration, and testing of real-time sensor software.
• Develop software applications using multiple programming languages on a variety of computing platforms.
• Ensure the SW Product Assurance processes are followed on our programs.
• Understand real-time software design and the performance implications associated with specific System Security implementations.
• Work closely with cross functional Engineering teams to define and implement Test Driven Multidisciplinary Capability (TDMC) based execution development and deployment requirements.
• Work in a common development environment to support and facilitate program ability to leverage specific capabilities.

Qualifications You Must Have:

• Typically requires a Bachelor's in Science, Technology, Engineering, or Mathematics (STEM) from an accredited university AND a minimum of 2 years of relevant software experience OR Master's in Science in Science, Technology, Engineering, or Mathematics (STEM) from an accredited university
• Experience with C / C++ AND experience with scripting languages like Python, Perl, or similar.
• Experience working in Agile/Scrum/Kanban or similar development environment as part of a software team
• The ability to obtain and maintain an ***interim Secret U.S. security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

• Experience/Knowledge of several of the following:
• Real-Time Operating Systems (RTOS); Kernel or Device Driver development; Software Integration; or similar.
• Linux/Unix environment
• Interfacing with FPGAs and ASICs
• Interfacing with low-level memory drivers
• Inter-processor communication
• Interface protocols, such as PCIe, GPIO, I2C, and SATA
• ARM Architecture
• Secure boot concepts
• Cryptographic Algorithms
• Containerization and software hardening techniques
• RMF and TIG
• Xilinx UltaScale+ MPSoC, Versal, or similar Embedded Processors
• VxWorks, Embedded Linux, or similar embedded Operating System experience
• Petalinux or Yocto Operating System experience
• Embedded Software Security
• Use of software configuration management and bug tracking tools
• DevSecOps tools, Model-based Engineering, and Test Driven Development
• Validation and verification of software applications
• Full software development lifecycle for real-time embedded security-oriented products

Please consider the following role type definition as you apply for this role.

This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA , an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

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,