Software Security Engineer, Onsite

Prattwhitney; El Segundo (CA); On-site; USD 76,000 - 144,000; Full time

Benefits offered by this job

Relocation assistance

Onsite role

Job summary

RTX in El Segundo, CA is seeking a Software Security Engineer II for an onsite role focused on embedded security software for real-time sensor systems. You will implement security principles across design, development, integration and testing, and work with cross-functional teams to advance TDMC-based execution.

The position emphasizes collaboration, real-time software optimization, and secure software lifecycle practices to protect national security assets.

Qualifications

• Bachelor’s in STEM and at least 2 years of software experience.
• Experience with C/C++ and scripting languages such as Python or Perl.
• Experience in Agile/Scrum/Kanban software development environment.
• Must be able to obtain and maintain a U.S. government security clearance and be a U.S. citizen.

Responsibilities

• Develop embedded security software for real-time sensor systems across platforms.
• Implement Software Security principles in embedded design, development, integration and testing.
• Collaborate with cross-functional teams to define TDMC-based execution requirements.

Skills

C/C++

Python/Perl

Agile/Scrum/Kanban

Education

Bachelor’s in STEM

Job description

Date Posted: 2026-09-30 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: The ability to obtain and maintain a U.S. government issued security clearance is required. 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 after day 1

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 El Segundo, CA 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) and a minimum of 2 years of relevant software experience.
• 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 a U.S. government issued security clearance is required.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

• Education or on-the-job experience in: Real-Time Operating Systems (RTOS); Kernel or Device Driver development; Software Integration; or similar.
• Validation and verification of software applications
• Full software development lifecycle for real-time embedded security-oriented products
• 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
• Xilinx UltaScale+ MPSoC, Versal, or similar
• Embedded Processors VxWorks, Embedded Linux, or similar embedded Operating System experience
• Embedded Software Security
• Use of software configuration management and bug tracking tools
• DevSecOps tools, Model-based Engineering, and Test Driven Development

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.

Relocation Eligible – Relocation assistance available

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: https://www.state.gov/m/ds/clearances/c10978.htm

The salary range for this role is 75,800 USD - 144,200 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 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.