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RTX
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October 8, 2026
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Embedded Security Software Engineer I (Onsite)

El Segundo, CA
Full-time
Onsite
$63K/yr - $120K/yr
Entry Level
RTX is an aerospace and defense company developing software applications for complex defense challenges. The Embedded Security Software Engineer I will design, code, integrate, test, and document critical real-time embedded software for radar, sensor, guidance, and fire control systems while contributing across the software development lifecycle.
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Responsibilities

  • Work on complex technical problems and collaborate to provide innovative solutions. Requires investigation and troubleshooting skills to assess issues and develop resolutions
  • Work at all phases of the SW development lifecycle, including SW/HW integration, dependent on program phase
  • Assist in the derivation of system and software requirements, architectural modeling, and technical analysis
  • Design, code, unit test, integrate, and document real-time embedded software solutions with a focus on Secure Software Solution implementations
  • Participate actively in software peer reviews, code inspections, and technical decision-making alongside multidisciplinary teams, including program leadership and customers
  • Support program execution to ensure work products meet technical, cost, schedule, and quality baselines
  • Follow established software development processes and practices to maintain software product integrity
  • Work Location: Onsite at our El Segundo, CA Campus
  • This position requires the eligibility to obtain a security clearance. Except in rare circumstances, only U.S. citizens are eligible for a security clearance

Qualification

Required

  • 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
  • Active and existing security clearance required after day 1
  • Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM) discipline from accredited institution. Degree must be obtained by start date
  • Experience developing, and testing or debugging software using C, C++, or similar object-oriented programming language
  • Experience with scripting languages such as Python, Perl or similar
  • Real time embedded software development experience
  • Strong hands-on troubleshooting and problem-solving experience
  • Experience developing software in a team-based development environment with strong teamwork and communication skills
  • Experience may be obtained through on-the-job experience, research, coursework, or projects

Preferred

  • Knowledge of Software Development Processes and experience participating in all phases of the Software Development Life Cycle (SDLC), including requirements, design, implementation, and testing
  • Experience working with Continuous Integration/Continuous Deployment (CI/CD) pipelines and automated build environments
  • Familiarity with Scrum/Agile, DevSecOps, Git/GitLab
  • Familiarity with Linux OS and Kernal development; Linux device drivers
  • Hands-on experience developing low-level device drivers or real-time embedded operating system (RTOS) applications
  • Hardware / software integration experience
  • Interfacing with FPGAs
  • Inter-processor communication
  • ARM Architecture
  • Secure boot concepts
  • Embedded Software Security experience
  • Experience designing, implementing, testing, or fielding real-time security-oriented solutions on Department of Defense (DoD) programs

Benefits

  • Relocation Eligible
  • Hired applicants may be eligible for 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.
RTX operates as an aerospace and defense company as it solves the hardest problems in aerospace and defense.
Glassdoor
3.7
Founded in 2020
Arlington, Virginia, USA
10001+ employees
http://rtx.com/
RTX operates as an aerospace and defense company as it solves the hardest problems in aerospace and defense.
Glassdoor
3.7
Founded in 2020
Arlington, Virginia, USA
10001+ employees
http://rtx.com/