Fluids Analyst II - Lunar Permanence

Application close date:

Applications will be accepted on an ongoing basis until the requisition is closed.

At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We’re working to develop reusable, safe, and low-cost space vehicles and systems within a culture of safety, collaboration, and inclusion. Join our team of problem solvers as we add new chapters to the history of spaceflight!

This role is part of the Lunar Permanence business unit, which develops Blue Origin’s Blue Moon landers and related products. To further Blue Origin's mission of millions of people living and working in space for the benefit of Earth, we are building sustainable infrastructure for our transport of crew and cargo from Earth to the lunar surface.

Blue Origin is hiring a Fluids Analyst to design and optimize the Gas Subsystem for the Lunar Transfer Stage spacecraft. You'll own the complete lifecycle—from requirements and interface definition through conceptual design, detailed design, component development, assembly, verification testing, and operations. This is a high-impact role where your thermal/fluids expertise directly supports humanity's return to the Moon.

Responsibilities include but are not limited to:

Build and maintain transient fluids simulation models of the gas subsystem using Thermal Desktop FloCAD and Sinda/Fluint Provide strategic guidance on hardware optimization, mission operations, and control logic

Lead trade studies across Gas Subsystem and neighboring subsystems

Define requirements and plan verification testing to validate hardware performance in relevant environments

Support the complete lifecycle of the Transporter vehicle from initial definition through in-flight operations

Drive design iteration through data-informed feedback and optimization

Minimum Qualifications:

B.S. in Mechanical Engineering, Aerospace Engineering, or related field3+ years of thermal/fluids analysis experience

Proficiency in Thermal Desktop FloCAD and Sinda/Fluint with strong FORTRAN user-logic skills

Deep understanding of Fluid Mechanics, Heat Transfer, and Thermodynamics Hands-on experience with first-order and Excel-level fluids calculations

Desired

Qualifications:

Advanced Engineering degree

Prior spacecraft fluid systems experienceCFD expertise (ANSYS Fluent, FLOW3D)
Fluid network analysis tools (AFT Arrow/Fathom)

Experience with cryogenic, two-phase, and gaseous fluid systems

Hydrogen and oxygen systems background

Process automation scripting skills (VBA, MATLAB, Python, FORTRAN)
Culture Statement Don’t meet all desired requirements? Studies have shown that some people are less likely to apply to jobs unless they meet every single desired qualification. At Blue Origin, we are dedicated to building an authentic workplace, so if you’re excited about this role but your past experience doesn’t align perfectly with every desired qualification in the job description, we encourage you to apply anyway.

You may be just the right candidate for this or other roles.

Export Control Regulations Applicants for employment at Blue Origin must be a U.S. citizen or national, U.S. permanent resident (i.e. current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Background Check Required for all positions:
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Defense Biometric Identification System (DBIDS) background check if at any time the role requires one to be on a military installation

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