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Fluids Engineer Jobs (NOW HIRING)

Aetherflux

Fluids Engineer

Seattle, WA · On-site

$120K - $150K/yr

  • Dental

  • Vision

  • Retirement

  • PTO

... fluids, and/or thermal management architectures. This includes valves, regulators, fluid storage ... Bachelor's degree in Mechanical, Aerospace, Chemical, or related engineering field. * 3+ years of ...

Rocket Lab Corporation

Stage Fluids Engineer II

Long Beach, CA · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

STAGE FLUIDS ENGINEER II A Stage Fluids Engineer II owns the design, build, and test of their fluid systems across the Neutron launch vehicle. Our team owns all plumbing and fluid systems between the ...

Karman+

Senior Thermal Fluids Engineer

Broomfield, CO · On-site

$101K - $137K/yr

As a Senior Thermal Fluids Engineer, your role would be to drive development of critical systems for a deep space vehicle like propellant tanks, valves, flow management systems, and refueling ...

Blue Origin

Principal Fluids Engineer

Seattle, WA

$160K - $224K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

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 ...

Blue Origin

Principal Fluids Engineer

Denver, CO · On-site

$160K - $224K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

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 ...

Blue Origin LLC

Fluids Engineer II

Seattle, WA · On-site

$99 - $139/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

## Fluids Engineer IIApplylocations: Greater Seattle Area: Space Coast, FL: Denver, COtime type: Full timeposted on: Posted Yesterdayjob requisition id: R69829Application close date:Applications will be ...

InvestedintheMission

NY · On-site

$190.46 - $271.77/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

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 ...

Aetherflux

Senior Fluids Engineer

Seattle, WA · On-site

$160K - $185K/yr

  • Dental

  • Vision

  • Retirement

  • PTO

... fluids, and thermal management architectures. This includes valves, regulators, fluid storage ... Bachelor's degree in Mechanical, Aerospace, Chemical, or related engineering field. * 3+ years of ...

Blue Origin, LLC

Principal Fluids Engineer

Seattle, WA · On-site

$160K - $224K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

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 ...

Socket.dev

NY · On-site

$100 - $160/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As part of a small, passionate and accomplished team of engineers and analysts, you will support all aspects of thermal and fluid system design for various New Glenn spaceflight systems. You will ...

New

Blue Origin, LLC

Fluids Engineer II

Seattle, WA · On-site

$90K - $127K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As part of a small, passionate and accomplished team of engineers and analysts, you will support all aspects of thermal and fluid system design for various New Glenn spaceflight systems. You will ...

Blue Origin

Fluids Engineer II

Denver, CO · On-site

$90K - $127K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As part of a small, passionate and accomplished team of engineers and analysts, you will support all aspects of thermal and fluid system design for various New Glenn spaceflight systems. You will ...

Blue Origin LLC

$105 - $145/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

## Fluids Engineer - Mid LevelApplylocations: Space Coast, FLposted on: Posted Todayjob requisition id: R70079Application close date:Applications will be accepted on an ongoing basis until the ...

Blisk Dynamics

Combustion & Thermal-Fluids Engineer

Long Beach, CA · On-site

$16K - $22K/mo

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

About the Role As our combustion and thermal-fluids engineer, you own the reacting-flow and thermal heart of the engine: the combustion system, the full-engine thermal model, and the aerodynamic and ...

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Fluids Engineer information

See salary details

$24K

$108K

$172K

How much do fluids engineer jobs pay per year?

As of Aug 19, 2026, the average yearly pay for fluids engineer in the United States is $107,956.00, according to ZipRecruiter salary data. Most workers in this role earn between $83,500.00 and $133,500.00 per year, depending on experience, location, and employer.

What is a fluids engineer?

Fluids Engineers are professionals who specialize in the study and application of fluid mechanics, which involves the behavior of liquids and gases. They design, analyze, and optimize systems where fluids play a critical role, such as pipelines, pumps, turbines, and hydraulic systems. Fluids Engineers work in various industries, including oil and gas, aerospace, automotive, and manufacturing, to ensure efficient and safe transport and control of fluids. Their work often involves simulation, modeling, and testing to solve complex engineering challenges.

What are the key skills and qualifications needed to thrive as a fluids engineer, and why are they important?

To thrive as a Fluids Engineer, you need a solid background in fluid mechanics, thermodynamics, and mathematics, typically supported by a degree in mechanical, chemical, or petroleum engineering. Familiarity with simulation software like ANSYS Fluent or COMSOL, as well as relevant industry certifications, is often required. Strong analytical thinking, problem-solving abilities, and effective communication skills help Fluids Engineers excel in collaborative and technically challenging environments. These skills are vital for accurately modeling fluid behavior, ensuring system safety, and delivering efficient engineering solutions.

What are some common challenges faced by fluids engineers in cross-disciplinary project teams?

Fluids Engineers often work alongside mechanical, civil, and chemical engineers, which can present challenges in aligning diverse technical perspectives and priorities. Effective communication is essential, as each discipline may use different terminology or have unique design constraints. Additionally, balancing project timelines and integrating fluid dynamics solutions with broader system requirements can require adaptability and proactive problem-solving. Building strong collaborative relationships and staying open to feedback are key strategies for overcoming these challenges.

What is the difference between Fluids Engineer vs Mechanical Engineer?

AspectFluids EngineerMechanical Engineer
Required CredentialsBachelor's in Mechanical, Aerospace, or Civil Engineering; specialization in fluid dynamicsBachelor's in Mechanical Engineering; broad engineering fundamentals
Work EnvironmentResearch labs, aerospace, energy, and fluid systems industriesManufacturing, automotive, aerospace, and product design
Industry UsageFocus on fluid behavior, flow analysis, and hydraulicsDesign and analyze mechanical systems, including thermal and structural components

Fluids Engineers specialize in fluid dynamics, working primarily on fluid systems and flow analysis, often within aerospace, energy, or research sectors. Mechanical Engineers have a broader scope, covering various mechanical systems, including thermal, structural, and fluid components. Both roles require strong engineering fundamentals, but Fluids Engineers focus more on fluid-specific applications.

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What cities are hiring for Fluids Engineer jobs?

Cities with the most Fluids Engineer job openings:

What states have the most Fluids Engineer jobs?

States with the most job openings for Fluids Engineer jobs include:

What job categories do people searching Fluids Engineer jobs look for?

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Fluids Engineer jobs near you
Infographic showing various Fluids Engineer job openings in the United States as of August 2026, with employment types broken down into 94% Full Time, 2% Part Time, and 4% Contract. Highlights an 85% Physical, 6% Hybrid, and 9% Remote job distribution, with an average salary of $107,956 per year, or $51.9 per hour.

Fluids Engineer

Aetherflux

Seattle, WA • On-site

$120K - $150K/yr

Full-time

Dental, Vision, Retirement, PTO

Posted 20 days ago

Job description

Cowboy Space Corp. is building the infrastructure to power and connect the orbital economy. Our satellites operate in Low Earth Orbit to collect sunlight and enable a new class of capabilities-from powering on-orbit compute, to transmitting energy via infrared lasers (space-to-earth and space-to-space), to delivering secure, high-bandwidth optical data. By rethinking how energy and data are generated and distributed in space, we're unlocking entirely new ways to operate both in orbit and on Earth.
Founded in 2024 by Baiju Bhatt (co-founder of Robinhood), Cowboy Space Corp. is backed by leading investors and built by a team from top aerospace and defense organizations. We're moving quickly to solve complex technical challenges and build a new category of space infrastructure.
About the Role:
You will own the design and development of fluid system hardware for the vehicle's propulsion, fluids, and/or thermal management architectures. This includes valves, regulators, fluid storage systems (tanks and pressure vessels), fluid routing (tubing, fittings, brackets, and manifolds), and integrated fluid subsystems. You will work across the full lifecycle-from concept and analysis through build, test, and flight-to deliver hardware that meets performance, mass, and reliability requirements in demanding launch and space environments.
Responsibilities:
  • Design valves (flow control, isolation, regulation, check, and relief) for propellant, pressurant, and thermal fluid systems used on propulsion and launch vehicle systems.
  • Develop fluid storage hardware including propellant tanks, pressure vessels, and accumulators from concept through qualification.
  • Design fluid routing architecture: tubing runs, manifolds, fittings, flex lines, and quick-disconnects for vehicle integration.
  • Own fluid subsystem layout and integration, ensuring compatibility across propulsion, thermal, and pneumatic systems.
  • Perform hydraulic and pneumatic analysis (pressure drop, flow distribution, water hammer, thermal transients) to size components and verify system performance.
  • Perform structural analysis (FEA, hand calcs) and validate with test and flight data.
  • Select materials compatible with propellants, pressures, and operating environments (cryogenic, high-pressure, corrosive).
  • Generate detailed component and assembly drawings, specifications, and interface control documents.
  • Support and execute component-level and system-level test campaigns (proof, burst, flow, leak, cycle life).
  • Work directly with manufacturing and technicians to resolve build issues, improve producibility, and support rapid iteration.
  • Support vehicle integration, fill/drain operations, and ground system interfaces.
  • Contribute to anomaly investigation, post-flight inspection, and design improvements for reuse and reliability.

Basic Qualifications:
  • Bachelor's degree in Mechanical, Aerospace, Chemical, or related engineering field.
  • 3+ years of experience designing fluid system hardware (valves, regulators, tanks, tubing, or fittings) for flight or high-performance applications.
  • Experience with fluid system analysis: pressure drop, flow sizing, structural analysis of pressure vessels, or thermal-fluid modeling.
  • Hands-on experience taking hardware from design through build and test.
  • Proficiency with CAD tools (NX, CATIA, or SolidWorks) for detailed part and assembly design.

Preferred Qualifications:
  • Experience with launch vehicle or spacecraft propulsion fluid systems.
  • Familiarity with cryogenic fluid handling, storage, and insulation systems.
  • Experience designing or qualifying valves (solenoid, pneumatic, or mechanically actuated).
  • Knowledge of material compatibility with common propellants (LOX, methane, hydrazine, NTO) and pressurants (helium, nitrogen).
  • Experience with additive manufacturing or advanced fabrication methods for fluid components.
  • Familiarity with relevant industry standards (AIAA, SAE, MIL-spec, ASME pressure vessel codes).
  • Experience supporting propulsion hot-fire testing or vehicle fill/drain operations.

Compensation and Benefits
The salary range for this position is $120,000 - $150,000 annually. The actual base salary offered will depend on factors such as job-related skills, experience, qualifications, and internal equity.
  • Equity in Cowboy Space Corp.
  • Employees and their eligible dependents may enroll in medical, dental, and vision insurance
  • 401(k) retirement savings plan
  • Paid time off
  • 10 paid holidays per calendar year
  • Paid parental leave
  • Relocation assistance if applicable
  • Daily lunch in the office and a fully stocked kitchen with beverages and snacks

ITAR Requirements
  • Export Control Requirement: To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), applicants must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about ITAR here.

Disclaimer
This job description is a summary of the primary duties and responsibilities of the job and position. It is not intended to be a comprehensive or all-inclusive listing of duties and responsibilities. Contents are subject to change at Cowboy Space Corp.'s discretion.
Cowboy Space Corp. is an equal employment opportunity employer. We consider individuals for employment or promotion according to their skills, abilities and experience. Cowboy Space Corp. is committed to complying with all applicable laws prohibiting discrimination based on race, color, religious creed, age, national origin, ancestry, physical, mental or developmental disability, sex (which includes pregnancy, childbirth, breastfeeding and medical conditions relating to pregnancy, childbirth or breastfeeding), veteran status, military status, marital or registered domestic partnership status, medical condition (including cancer or genetic characteristics), genetic information, gender, gender identity, gender expression, sexual orientation, as well as any other category protected by federal, state or local laws.

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