Senior Software Security Engineer

Prattwhitney; McKinney (TX); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

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

Holidays

Job summary

RTX in McKinney, TX seeks a Senior Software Security Engineer to join the onsite Software Product Assurance team. You will implement security for embedded sensor software across platforms and develop applications in multiple languages while ensuring TDMC-based execution.

The role requires 5+ years of software experience or a master's in STEM, with C/C++ and scripting skills, and an active DoD Secret clearance from day one. This opportunity offers strong growth in aerospace and defense.

Qualifications

• Bachelor’s degree in STEM from an accredited university.
• 5+ years of relevant software experience or MS in STEM.
• Proficiency in C/C++ and scripting (Python/Perl).
• Experience with RTOS, kernel or device drivers, and software integration.
• Active and transferable Secret clearance required.

Responsibilities

• Develop software security for embedded sensor software across platforms.
• Apply software security principles to design, development, and testing.
• Create applications using multiple programming languages on diverse platforms.
• Ensure adherence to SW Product Assurance processes on programs.
• Collaborate with cross-functional teams to implement TDMC-based execution.
• Contribute to real-time software design and performance considerations.

Education

Bachelor’s in STEM

Master’s in STEM

C/C++

Python

RTOS

Agile

Tools

Python

Job description

Job Details

• Date Posted: 2026-09-28
• 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: Active and existing security clearance required on day 1

Employer Overview

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.

Role Summary

Software Product Assurance team in McKinney, TX is seeking a highly motivated Senior Software Security Engineer 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 5 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 Education or on-the-job experience in: Real-Time Operating Systems (RTOS); Kernel or Device Driver development; Software Integration; or similar.
• Active and transferable U.S. government issued Secret security clearance is required prior to start date.

Qualifications We Prefer

• Experience/Knowledge of several of the following: 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

Security Clearance

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: Active and existing security clearance required on day 1.

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

Salary

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.

Benefits

• 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
• 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.

Application Window

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.

Location

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.

Equal Opportunity

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.

Privacy Policy

Privacy Policy and Terms:

Company Overview

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.