Software Engineer, C++ - Top Secret Clearance
SpaceX
Hawthorne, CA · Posted January 19, 2026
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About the job
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.
SOFTWARE ENGINEER, C++ - TOP SECRET CLEARANCE
As a Software Engineer in Special Programs, 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 application used to control and test flight systems. This is a high-impact role where you will work across the engineering groups to build a high-assurance system that accelerates the development and demonstration of cutting-edge software and hardware.
Aerospace experience is not required to be successful here - rather we look for smart, motivated software engineers who enjoy taking on complex challenges, work well in dynamic environments, and care about software best practices. Our software is critical to future mission successes, and we have no shortage of interesting challenges that require innovative, cutting-edge solutions.
RESPONSIBILITIES:
Contribute to all aspects of software engineering and product development producing highly reliable software across all areas of the application suite
Develop prototypes to prove out key design concepts and quantify technical constraints
Develop modules for real-time data streaming of flight systems data
Contribute to test automation processes and CI/CD infrastructure
Maintain highest standards of excellence, never settling for the status quo
BASIC QUALIFICATIONS:
Bachelor's degree in computer science, math, or engineering
1+ years of experience in software development, programming in modern C++
PREFERRED SKILLS AND EXPERIENCE:
Strong software design and development skills
Experience with data streaming and real-time data processing is a plus
Experience with data serialization formats such as JSON, YAML, XML and Protobuf
Experience in software development delivering robust and scalable software applications
Experience with Python, Java or Go
Experience with containerized solutions such as Docker and Kubernetes
Experience with database systems such as Postgres, MySql or Oracle.
Strong skills in debugging, performance optimization, data throughput analysis and unit testing
Strong creative and innovative problem-solving skills
Ability to work effectively in a dynamic environment by quickly adapting to changing needs and requirements
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-employment drug and random drug and alcohol testing
Willing to work extended hours and weekends when needed
COMPENSATION AND BENEFITS:
Pay range: Software Engineer/Level I: $125,000.00 - $150,000.00/per year Software Engineer/Level II: $145,000.00 - $175,000.00/per year
Your actual level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience. Those with an active clearance will receive a 10% differential, up to an additional $20,000 annually, once officially briefed into a classified program.
Base salary is just one part of your total rewards package at SpaceX. You may also be eligible for long-term incentives, in the form of company stock, stock options, or long-term cash awards, as well as potential discretionary bonuses and the ability to purchase additional stock at a discount through an Employee Stock Purchase Plan. You will also receive access to comprehensive medical, vision, and dental coverage, access to a 401(k) retirement plan, short and long-term disability insurance, life insurance, paid parental leave, and various other discounts and perks. You may also accrue 3 weeks of paid vacation and will be eligible for 10 or more paid holidays per year. Exempt employees are eligible for 5 days of sick leave per year. Employees accrue paid sick leave pursuant to the Company policy which satisfies or exceeds the accrual, carryover, and use requirements of the law.
ITAR REQUIREMENTS:
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. Learn more about the ITAR here .
SpaceX is an Equal Opportunity Employer; employment with SpaceX is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.
Applicants wishing to view a copy of SpaceX’s Affirmative Action Plan for veterans and individuals with disabilities, or applicants requiring reasonable accommodation to the application/interview process should reach out to EEOCompliance@spacex.com .