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Salary
≈ $107k – $216k per year (Estimated)
Location
In office (Brownsville)
Seniority
Principal · 7+ years exp

Confirmed on the employer's own hiring board on Nov 5, 2026. First seen by Alion on Oct 10, 2026. SpaceX scores A on the Alion truth index.

Overview
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SpaceX is an American aerospace manufacturer and launch services provider founded by Elon Musk in 2002 with the goal of making life multiplanetary. It developed the reusable Falcon 9, now by far the most flown orbital rocket in the world, the Dragon capsule that carries NASA astronauts to the International Space Station, and Starship, the fully reusable super-heavy vehicle intended for lunar and Mars missions. The company also operates Starlink, a satellite constellation of thousands of spacecraft providing broadband to consumers, aircraft, ships and militaries, which has become its largest source of revenue.

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.

PRINCIPAL MECHANICAL ENGINEER (STARSHIP)

SpaceX is looking for a Principal Mechanical Engineer to help build the infrastructure behind power generation and supercompute at Starbase. You will own mechanical scope from concept through design, fabrication, construction, and commissioning. The work can span power generation, fluid and cooling systems, and the structures and equipment that production depends on. You will set the technical direction, work across engineering, construction, and operations, and see your decisions show up in hardware that has to perform in the field.

RESPONSIBILITIES:

  • Develop design concepts from a clean sheet and size infrastructure systems based on operational loads, site conditions, and how the facility will actually run
  • Collaborate with peers across disciplines to develop designs that balance cost, schedule, reliability, and capability
  • Create detailed designs and generate CAD models for components, assemblies, and integration into the larger site
  • Build analysis models to assess your designs in detail and confirm they meet the needs of the system
  • Apply first-order hand calculations and empirical formulas to assess and iterate on your designs rapidly
  • Validate your designs through development hardware, mockups, or first articles, and test critical joints, components, and design elements
  • Support testing and commissioning of subsystems and full installations
  • Partner with construction, build engineers, and technicians to improve your designs
  • Support installation of your hardware in the field, witness your designs being built and brought online, and see them go into service

BASIC QUALIFICATIONS:

  • Bachelor's degree in an engineering discipline
  • 7+ years of experience with mechanical design and analysis

PREFERRED SKILLS AND EXPERIENCE:

  • Experience designing, analyzing, building, and testing high performance, mechanical systems
  • Experience working within interdisciplinary teams to develop solutions to challenging and complex problems
  • Experience with FEA or multiphysics simulation package (e.g. NASTRAN, ABAQUS, ANSYS)
  • Experience designing and executing qualification testing
  • Strong understanding of mechanical first principles and structural analysis methodologies
  • Proficiency in selecting materials and manufacturing methods for mechanical components
  • Analytical/scientific programming experience (i.e. Python, Matlab, Excel)
  • Self-motivated with strong organizational, written, and oral communication skills

ADDITIONAL REQUIREMENTS:

  • Must be available to work extended hours and weekends when needed based on site operational needs; flexibility required

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  [email protected]. 

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