Full Stack Software Engineer - Top Secret Clearance
SpaceXHawthorne, CA$120k – $145kPosted 24 February 2026
Tech Stack
Job Description
SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars.
FULL STACK SOFTWARE ENGINEER - TOP SECRET CLEARANCE
As a Software Engineer, you will design, develop, and test key aspects of an in-house solution for analysis, simulation, and prototyping of software in support of all SpaceX flight systems. You will have full ownership of new features in a scalable, high-performance web application, in addition to contributing to the core simulation and emulation infrastructure and collaborating on the building of models of fluids, electronics, and multi-body physics systems. This is a high-impact role where you will work across the engineering groups to build a high-throughput distributed system to develop and demonstrate cutting-edge software and hardware. SpaceX is looking for smart, motivated software engineers who enjoy taking on complex challenges, work well in dynamic environments, and care about software best practices.
Our simulation software is critical to future mission success, and we have no shortage of interesting challenges that require innovative, cutting-edge solutions.
RESPONSIBILITIES:
Develop full-stack solutions to manage analysis, prototypes, and vehicles leveraging simulation software, emulators, and flight software
Develop prototypes to prove key design concepts and quantify technical constraints
Develop high-fidelity simulation and emulation software for all vehicles while maintaining the highest standards of excellence, never settling for the status quo
Improve reliability and performance of simulation software
Work with users to develop new features and improve user experience
BASIC QUALIFICATIONS:
Bachelor's degree in computer science, engineering, math, or science discipline and 1+ years of experience in software development; or 3+ years of professional experience building software in lieu of a degree
1+ years of professional experience in full-stack development of production web applications
Experience with JavaScript libraries such as React and Redux
Professional experience developing Python applications
PREFERRED SKILLS AND EXPERIENCE:
Professional programming experience in modern C++ (C++14 and above)
Professional programming experience with object-oriented languages such as Java, Python, and C#
Strong software design and development skills
Experience with highly available concurrent systems
Ability to work effectively in a dynamic environment with changing needs and requirements
Ability to work independently and in a team, take initiative, and communicate effectively
Experience with containerized solutions such as Docker and Kubernetes
Professional experience with Linux or Unix systems and tools
Experience with high-performance computing systems
Experience with database systems such as Postgres, MySQL, or Oracle
Experience working with a team on at least one large (>100,000 lines) software project
Strong skills in debugging, performance optimization, and test automation.
Active Top Secret, Top Secret SCI, or DOE Level Q clearance, or the ability and willingness to obtain one
ADDITIONAL REQUIREMENTS:
This position requires successfully obtaining and maintaining a Top Secret Security Clearance as a condition of employment. While the clearance may not be immediately necessary upon hire, we encourage you to initiate the application process promptly upon accepting this offer. Your ability to secure the necessary clearance is essential for fulfilling key responsibilities of the role. Should you be unable to obtain it, SpaceX reserves the right to modify or terminate your employment to align with operational needs.
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-employmen ... (truncated, view full listing at source)
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