Senior Software Security Engineer

Job ID: 01877780Posted: Posted TodayStart Date: 2026-09-28Location: US-TX-MCKINNEY-513PW ~ 2501 W University Dr ~ PW BLDGCountry: United States of AmericaTime Type: Full timeDate 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 1At 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.At RTX, the world 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 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 universityExperience 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 teamEducation 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 environmentInterfacing with FPGAs and ASICsInterfacing with low-level memory driversInter-processor communicationInterface protocols, such as PCIe, GPIO, I2C, and SATAARM ArchitectureSecure boot conceptsCryptographic AlgorithmsContainerization and software hardening techniquesRMF and TIGXilinx UltaScale+ MPSoC, Versal, or similar Embedded ProcessorsVxWorks, Embedded Linux, or similar embedded Operating System experiencePetalinux or Yocto Operating System experienceEmbedded Software SecurityUse of software configuration management and bug tracking toolsDevSecOps tools, Model-based Engineering, and Test Driven DevelopmentValidation and verification of software applicationsFull software development lifecycle for real-time embedded security-oriented productsLearn More & Apply Now!Please consider the following role type definition as you apply for this role. 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.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: 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. Privacy Policy and Terms:Click on this link to read the Policy and Terms