Senior Software Security Engineer, Onsite

RTX; El Segundo (CA); On-site; USD 96,000 - 182,000; Full time

Benefits offered by this job

RTX Employee Scholar Program

401(k) plan with match

Flexible work schedules and PTO

Job summary

RTX in El Segundo, CA is seeking a Senior Software Security Engineer to join the Software Product Assurance team. The role focuses on security-centric embedded software across real-time sensor software platforms, using C and C++ on diverse computing systems.

The ideal candidate has 5+ years in software, embedded security, and a DoD Secret clearance. You will collaborate with cross-functional teams, support TDMC, and ensure security processes are integrated across programs.

Qualifications

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5 years of relevant software experience.
• Experience with C / C++.
• Experience with Embedded Processors.
• Experience with embedded OS like VxWorks, Embedded Linux, or similar.
• Embedded Software Security experience.
• Active and transferable U.S. government issued Secret security clearance is required.

Responsibilities

• Implement Software Security principles to embedded software design, development, integration, and testing of real-time sensor software.
• Develop software applications using C and C++ 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.
• Interface with customer community to review technical design and support verification of system maturity.

Skills

C/C++

Embedded software

Security clearance

Real-time software

Education

Bachelor’s in STEM

Tools

VxWorks

Embedded Linux

Petalinux/Yocto

Job description

Date Posted: 2026-09-23

Country: United States of America

Location: US-CA-EL SEGUNDO-E01 ~ 2000 E El Segundo Blvd ~ BLDG E01

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

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.

We are currently seeking a Senior Software Security Engineer to join our Software Product Assurance team in El Segundo, CA.

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 to embedded software design, development, integration, and testing of real-time sensor software.
• Develop software applications using C and C++ 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.
• Interface with customer community to review technical design and support verification of system maturity.

Qualifications You Must Have:

• Typically requires a Bachelor’s in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 5 years of relevant software experience
• Experience with C / C++
• Experience with Embedded Processors
• Experience with embedded OS like VxWorks, Embedded Linux, or similar
• Embedded Software Security experience
• Active and transferable U.S. government issued Secret security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

Experience/knowledge of any of the following:

• Designing, implementing, testing, or fielding real-time security-oriented solutions on Department of War (DoW) programs (embedded experience highly preferred)
• Kernel or Device Driver development
• Petalinux/Yocto operating systems
• Agile/Scrum/Kanban frameworks and DevSecOps environments
• Knowledge of modern computer architecture and hardware technologies including:
• ARM Architecture
• Interface protocols: PCIe, GPIO, I2C, SATA
• Field Programmable Gate Arrays (FPGAs)
• Application-Specific Integrated Circuits (ASICs)
• Using software configuration management and bug tracking tools
• Experience with validation and verification of software applications

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. Some of our employee benefits include:

• The RTX Employee Scholar Program pays for tuition, academic fees and books for undergraduate and graduate study at approved educational institutions
• 401(k) plan that offers a broad range of investment options. For eligible employees, we will match up to 4% of your savings to help you build financial security
• Flexible work schedules and paid time off to accommodate work/life balance including many with every other Friday off

The salary range for this role is 95,500 USD - 181,700 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.