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RTX
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October 9, 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 secure real-time embedded software for radar, sensor, guidance, and fire control systems. The role contributes across the software development lifecycle and requires collaboration with multidisciplinary teams.
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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
  • 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
  • embedded experience highly preferred

Benefits

  • Relocation Eligible
  • Medical insurance
  • Dental insurance
  • Vision insurance
  • 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
  • Holidays
  • 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
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/