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Security Software Engineer - Top Secret Clearance

SpaceX

$130,000 - $175,000
Dec 16, 2025
Hawthorne, CA, US
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SpaceX is seeking to develop technologies to enable human life on Mars, with a specific focus on securing software systems in U.S. Government and ITAR-controlled environments.

Requirements

  • Experience with one or more software development languages (i.e. Python, C++, Golang)
  • Experience designing and implementing security solutions for operating systems, distributed systems, or other enterprise/large-scale infrastructure
  • Fundamental understanding of network protocols; including the TCP/IP stack as well as UDP based protocols
  • Experience with software version control (e.g., Git), CI/CD pipelines, and automated testing tools
  • Deep knowledge and practical experience with International Traffic in Arms Regulations (ITAR)
  • Experience contributing security improvements to complex systems
  • Strong analytical and problem-solving skills for troubleshooting complex software-hardware integration issues

Responsibilities

  • Maintain existing production systems and improve security posture via both direct implementation and recommendations to other teams
  • Build prototypes and help identify, design, and test security improvements
  • Implement and promote secure coding practices and software development security methodologies throughout the development lifecycle
  • Implement and enforce secure coding practices (SAST, DAST, threat modeling) throughout the software development lifecycle
  • Work closely with software engineers to set software needs, ensure hardware and software integrate smoothly, troubleshoot and fix major system problems
  • Partner with various teams to define software requirements, system design, and integration strategies
  • Review and guide software development for ITAR-controlled payloads, following all export laws and company rules strictly

Other

  • Bachelor's degree in computer science or another STEM discipline; or 2+ years of professional experience in security software development in lieu of a degree
  • This position requires successfully obtaining and maintaining a Top Secret Security Clearance as a condition of employment
  • Note that an active clearance may provide the opportunity for you to work on sensitive SpaceX missions. If so, you will be subject to pre-employment drug and random drug and alcohol testing
  • Willing to work extended hours and weekends when needed
  • To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State