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SpaceX

Propulsion Engineer, Thermal & Fluid Analysis (Starship)

Starbase, TX
Level
Junior

Not stated in the posting: salary, work type, visa.

Open. First seen 23 May 2026.

About the role

SpaceX's standard text

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.

PROPULSION ENGINEER, THERMAL & FLUID ANALYSIS (STARSHIP)

As a Propulsion Engineer on the Starship Thermal & Fluids analysis team, you will ensure that fluid consumables are in the right place and at the right conditions for the Starship program. You will make engineering decisions to improve vehicle performance and reliability to help create a fully reusable transportation system designed to carry both crew and cargo to Earth orbit, the Moon, Mars, and beyond.

RESPONSIBILITIES:

  • Run pre-mission analysis on attitude control systems, propellant conditions, tank pressurization systems to maximize performance while staying robust.
  • Automate the workflow above to reduce engineering investment in per-mission analysis.
  • Pursue performance/robustness improvements.
  • Pursue operational simplicity and seek to reduce burden on other groups at SpaceX.
  • Produce quality documentation of your work to reduce miss-rate and improve efficiency.
  • Review peer work.

BASIC QUALIFICATIONS:

  • Bachelor's degree in an engineering discipline.
  • 1+ years of experience using engineering simulation software such as MATLAB (student project team and internship experience qualifies).

PREFERRED SKILLS AND EXPERIENCE:

  • Master’s degree in an engineering discipline.
  • 2+ years of professional experience with thermal or fluid analysis.
  • Strong understanding of spacecraft and/or launch vehicle propulsion systems and fluid components.
  • Experience with 0-D and 1-D thermal/fluid networks.
  • Working knowledge of scripting languages (specifically Python).
  • Excellent oral and written communication skills.
  • Ability to deliver against an aggressive schedule.

ADDITIONAL REQUIREMENTS:

  • Must be available to work extended hours and weekends as needed.

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's standard text

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.

What this role asks for

Particular to this role

MATLAB

Rare in SpaceX's other 299 open postings.

Standard for software engineering roles

Python

Common in software engineering postings at any company.

69% of this description is written for the role. The rest is SpaceX's standard text, folded away below.

Read against SpaceX's other open postings on this site.

The team: Starship Analysis HIRES STEADILY

This role is one of 6 open in Starship Analysis. 1 was posted in the last 30 days and the oldest in May: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

MATLAB (6 of 6), Python (6 of 6), ANSYS (3 of 6)

OTHER ROLES ON THIS TEAM

From the team and dates on SpaceX's own job board.

Other openings for this role

2 postings for this role in Starbase, TX since 7 March 2026, 1 still open. None has been taken down and posted again.

  • 23 May 2026 – open (this posting)
  • 7 March 2026 – closed 15 June 2026

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