Principal Software Security Engineer, Onsite in El Segundo

Energy Jobline ZR; El Segundo (CA); On-site; USD 118,000 - 225,000; Full time

Benefits offered by this job

Employee Scholar Program

401(k) match

Flexible PTO

Job summary

RTX in El Segundo, CA is seeking a Principal Software Security Engineer to join our Software Product Assurance team. You will apply security principles to embedded sensor software across real-time platforms and collaborate with cross-functional engineers.

Key duties include building secure software in C/C++, performing static analysis, and ensuring compliance with DoD security requirements. A DoD Secret clearance and STEM degree are required.

Qualifications

• Bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM).
• Experience with C/C++ and embedded software security.
• Familiarity with static analysis concepts, methods and tools.

Responsibilities

• Implement software security principles in embedded real-time sensor software.
• Develop C/C++ applications across multiple computing platforms.
• Ensure Software Product Assurance processes are followed on programs.
• Collaborate with cross-functional teams to define TDMC based execution and deployment requirements.

Skills

C/C++

Embedded security

Static analysis

Xilinx MPSoC/Versal

Embedded OS (VxWorks/Embedded Linux)

Python scripting

Security clearance (DoD Secret)

Education

Bachelor's degree in STEM

Tools

Petalinux/Yocto

VxWorks

Yocto

Job description

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. , 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. 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 Principal 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++ 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 8 years of relevant software experience
• Expertise with C / C++
• Experience with Static analysis concepts, methods & tools
• Experience with Xilinx UltaScale+ MPSoC, Versal, or similar Embedded Processors
• Experience with embedded OS like VxWorks, Embedded Linux, or similar
• Experience using scripting like Python, Perl, or similar
• Embedded Software Security experience
• Active and transferable U.S. Government issued Secret clearance is required prior to start date.U.S. citizenshipis required, as only U.S. are eligible for a security clearance.

Qualifications We Prefer:

• Experience with Secure boot, containerization and software hardening
• Experience with Cryptographic Algorithms
• Experience in a technical leadership role to grow and lead a small technical team

Experience/knowledge

• Designing, implementing, testing, or fielding real-time security-oriented solutions on Department of War (DoW) programs (embedded experience highly )
• 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

Interview Process

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attendselect 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 118,300 USD - 224,900 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 , long-term , 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 , , , , , , , , or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.