Principal Fluids Engineer

Blue Origin; Seattle (WA); On-site; USD 170,000 - 237,000; Full time

Benefits offered by this job

Medical, dental, vision

401(k) with company match

Stock options

Paid time off

Education Support Program

Job summary

Blue Origin seeks a senior fluid systems engineer to support the development and operations of New Glenn. You will contribute to fluid modeling, thermal analyses, and documentation across design to flight operations, ensuring safety and reliability of spaceflight systems.

The role emphasizes analysis of booster/upper-stage fluid systems, collaboration across teams, and a strong commitment to quality and mission success.

Qualifications

• BS degree in Mechanical or Aerospace Engineering is required.
• 15+ years of fluids or thermodynamic analysis experience is required.
• Expertise with at least one fluid modeling tool (e.g., SINDA/FLUINT, Thermal Desktop) is required.
• Proficiency in MATLAB or similar scripting tools is preferred.

Responsibilities

• Perform analysis-intensive tasks to support development and verification of fluid models for components and the vehicle.
• Develop fluid and thermal loads from CFD, first principles, literature, and experiments.
• Oversee configuration development, detailed design, and verification activities.
• Own documentation and maintenance of analysis inputs, models, and results in reports and data books.

Skills

Fluid modeling

Thermal analysis

MATLAB

Rocket systems experience

Model review & critique

Education

BS in Mechanical or Aerospace Engineering

Tools

SINDA/FLUINT

Thermal Desktop

FloCAD

Creo

Job description

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 supports the development and operations of New Glenn, a single-configuration, heavy-lift orbital launch vehicle capable of routinely carrying people and payloads to low-Earth orbit, geostationary transfer orbit, cislunar, and beyond. Its first stage is fully reusable, and the vehicle was designed from the beginning to be human-capable.

As part of a small, hard-working, and accomplished team of experts, you will support all aspects of fluid systems design for the New Glenn launch vehicle. You will share in the team's impact on the systems from early conceptual design and configuration through flight operations and sustaining engineering. The responsibilities of this position will be analysis intensive, supporting development and verification of component and vehicle-level fluid models. You will help develop fluid and thermal loads derived from CFD, first principles, literature, and/or experiment. You will be responsible for configuration development, detailed design, and verification activities. You will own the documentation and maintenance of analysis inputs, models, and results in reports and data books.

We are looking for someone to apply their technical expertise, leadership skills, and commitment to quality to positively impact safe human spaceflight. Passion for our mission and vision is required!

Minimum Qualifications:

• Minimum of BS degree in Mechanical or Aerospace Engineering


• 15 or more years of experience in the fields of fluids or thermodynamic analysis


• Demonstrated expertise with one or more fluid modeling tools is required: i.e. SINDA/FLUINT, Thermal Desktop


• Knowledge of MATLAB or similar scripting tools


• Experience analyzing booster and upper stage of rocket systems


• Experience reviewing and critiquing models and results developed by junior engineers

Preferred Qualifications:

• 20 or more years of experience and an MS or PhD degree


• Experience with FloCAD


• Experience analyzing cryogenic fluid systems


• Experience with commercial CFD for fluid systems


• Knowledge in the use of 3D CAD tools (CREO is preferred)

Base Pay Range for:

• CO applicants is $160,618.00 - $224,864.85


• WA applicants is $169,624.00 - $237,473.25


• Other site ranges may differ

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: Blue's Standard Background Check


• Required for Certain Job Profiles: Defense Biometric Identification System (DBIDS) background check if at any time the role requires one to be on a military installation


• Required for Certain Job Profiles: Drivers who operate Commercial Motor Vehicles with a Gross Vehicle Weight (GVW), Gross Vehicle Weight Rating (GVWR) or combination of power unit and trailer that meets or exceeds 10,001 lbs. and/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training.


• Required for certain Job Profiles: Ability to obtain and maintain Merchant Mariner Credential, which includes pre-employment and random drug testing as well as DOT physical

Benefits

• Benefits include: Medical, dental, vision, basic and supplemental life insurance, paid parental leave, short and long-term disability, 401(k) with a company match of up to 5%, and an Education Support Program.


• Stock Options for all regular employees (working at least 20 hours/week)


• Paid Time Off: Up to four (4) weeks per year based on weekly scheduled hours, and up to 14 company-paid holidays.


• Dependent on role type and job level, employees may be eligible for benefits and bonuses based on the company's intent to reward indiv