Senior Thermal & Fluids Engineer - Spaceflight Systems

Blue Origin LLC; United States; On-site; USD 145,000 - 203,000; Full time

Benefits offered by this job

Medical, dental, vision

Life insurance

Parental leave

Disability insurance

401(k) with company match

Education support

Stock options

Paid time off

Job summary

Blue Origin LLC is seeking an experienced Thermal/Fluid Systems Engineer to support upper-stage development. You will conduct analyses, develop models, and verify environments for flight operations and sustaining engineering, contributing to safe, reusable spaceflight programs.

The role requires deep expertise in thermal/fluids analysis, familiarity with ANSYS tools, and a strong background in aerospace propulsion environments. U.S. citizenship or permanent residency is required.

Qualifications

• Minimum of a B.S. degree in Mechanical or Aerospace Engineering.
• 5+ years of experience in thermal or thermodynamic analysis.
• Experience with one or more fluid or thermal modeling tools is required (e.g., ANSYS Workbench, ANSYS Classic, SINDA/FLUINT, Thermal Desktop, etc.).
• Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Responsibilities

• Conduct thermal and fluids analysis to define performance and operations for upper‑stage spaceflight systems, define hardware requirements, and resolve technical challenges
• Implement aerothermal, rocket plume heating, and natural environments across all phases of flight
• Generate and run thermal/fluids models to predict system performance across a wide range of environments
• Evaluate bounding thermal conditions against material and design capabilities
• Own the documentation and maintenance of analysis inputs, models, and results in reports and data books
• Support development and verification of component and vehicle thermal and fluid environments and performance requirements
• Support the systems through their full lifecycle, from conceptual design and configuration through flight operations and sustaining engineering

Skills

Thermal and fluids analysis

ANSYS Workbench

SINDA/FLUINT

Thermal Desktop

MATLAB

Education

B.S. degree in Mechanical or Aerospace Engineering

Tools

ANSYS Classic

FloCAD

Job description

Blue Origin LLC is seeking an experienced Thermal/Fluid Systems Engineer to support upper-stage development. You will conduct analyses, develop models, and verify environments for flight operations and sustaining engineering, contributing to safe, reusable spaceflight programs.

The role requires deep expertise in thermal/fluids analysis, familiarity with ANSYS tools, and a strong background in aerospace propulsion environments. U.S. citizenship or permanent residency is required.