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Fluids Engineer Jobs in Seattle, WA (NOW HIRING)

Stoke Space

Senior Fluids Engineer

Kent, WA

$129K - $193K/yr

As a Senior Fluids Engineer, you will be responsible for defining, designing, manufacturing, and testing various fluids systems across the rocket. You will be owner of the entire process for your ...

Voiceflow

Senior Fluids Engineer

Kent, WA · On-site

$129.15 - $193.62/hr

As a Senior Fluids Engineer, you will be responsible for defining, designing, manufacturing, and testing various fluids systems across the rocket. You will be owner of the entire process for your ...

Aetherflux

Fluids Engineer

Kent, WA · On-site

$120K - $150K/yr

... 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 ...

Stoke Space

Senior Fluids Engineer

Kent, WA · On-site

$129K - $193K/yr

As a Senior Fluids Engineer, you will be responsible for defining, designing, manufacturing, and testing various fluids systems across the rocket. You will be owner of the entire process for your ...

Industrious Ventures

Senior Fluids Engineer

Kent, WA · On-site

$129.15 - $193.62/hr

As a Senior Fluids Engineer, you will be responsible for defining, designing, manufacturing, and testing various fluids systems across the rocket. You will be owner of the entire process for your ...

Aetherflux

Fluids Engineer Level 1

Kent, WA · On-site

About the Role As a Fluids Engineer, you will own a critical fluid system from concept through flight. Depending on your background and team priorities, your assignment will be on Propulsion fluid ...

Blue Origin LLC

Principal Fluids Engineer

Seattle, WA · On-site

$194.12 - $271.77/hr

Principal Fluids EngineerSkip to main content#Principal Fluids Engineer page is loaded## Principal Fluids EngineerApplylocations: Greater Seattle Area: Space Coast, FL: Denver, COtime type: Full ...

Cowboy Space Corp.

Fluids Engineer Level 1

Seattle, WA · On-site

$100 - $135/hr

Fluids Engineer Level 1 COWBOY SPACE CORP. Cowboy Space Corp. is building the infrastructure to power and connect the orbital economy. Our satellites operate in Low Earth Orbit to collect sunlight ...

Socket.dev

Fluids Engineer Level 1

Kent, WA · On-site

$100 - $135/hr

Fluids Engineer Level 1 COWBOY SPACE CORP. Cowboy Space Corp. is building the infrastructure to power and connect the orbital economy. Our satellites operate in Low Earth Orbit to collect sunlight ...

New

Blue Origin

Principal Fluids Engineer

Seattle, WA · On-site

$160K - $224K/yr

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

Principal Fluids Engineer

Seattle, WA · On-site

$160K - $224K/yr

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

Kent, WA · On-site

$160K - $185K/yr

... 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

Thermal & Fluids Engineer III

Seattle, WA · On-site

$121K - $169K/yr

Conduct thermal and fluids analysis to define performance and operations for upper-stage ... S. degree in Mechanical or Aerospace Engineering * 5+ years of experience in thermal or ...

Blue Origin LLC

Thermal & Fluids Engineer III

Seattle, WA · On-site

$121 - $169/hr

As part of a small, passionate, and accomplished team of engineers and analysts, you will support ... Conduct thermal and fluids analysis to define performance and operations for upper-stage ...

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All JobsFluids Engineer JobsFluids Engineer Jobs in Seattle, WA

Fluids Engineer information

See Seattle, WA salary details

$27.3K

$122.9K

$195.7K

How much do fluids engineer jobs pay per year?

As of Sep 5, 2026, the average yearly pay for fluids engineer in Seattle, WA is $122,857.00, according to ZipRecruiter salary data. Most workers in this role earn between $95,000.00 and $151,900.00 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.

What are popular job titles related to Fluids Engineer jobs in Seattle, WA?

For Fluids Engineer jobs in Seattle, WA, the most frequently searched job titles are:

What job categories do people searching Fluids Engineer jobs in Seattle, WA look for?

The top searched job categories for Fluids Engineer jobs in Seattle, WA are:

Fluids Engineer jobs near you
Infographic showing various Fluids Engineer job openings in Seattle, WA as of August 2026, with employment types broken down into 91% Full Time, 5% Part Time, and 4% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $122,857 per year, or $59.1 per hour.

Senior Fluids Engineer

Stoke Space

Kent, WA

$129K - $193K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 6 days ago

Job description

Description

Stoke's Stage Fluids team is developing a reusable LNG/LOX first stage and reusable LH2/LOX second stage for our launch vehicle, Nova. As a Senior Fluids Engineer, you will be responsible for defining, designing, manufacturing, and testing various fluids systems across the rocket. You will be owner of the entire process for your designs, from early concepting and architecture trades, to creating models in CAD and completing analysis, to procuring parts with suppliers and integrating them onto the vehicle. As part of a small, well-supported team, you will have access to the resources you need to get the job done right while simultaneously boosting your skills at a pace that can't be matched in most other roles.  You must be ready to stay focused, move fast, self-direct, and learn on the fly.

Responsibilities

  • Collect design requirements from multidisciplinary teams, and use these to create concepts for fluids systems
  • Lead architecture trades for major fluids systems, rapidly transform these decisions into real-life hardware implementations
  • Develop fluids system concept of operations for ground, flight, and recovery phases of vehicle's life
  • Perform gas and liquid fluids system sizing analysis (incompressible and compressible flow)
  • Design and analyze launch vehicle tubing, manifold, and mounting systems, ensure these systems are structurally capable of surviving vehicle load cases. Create CAD models and drawings
  • Coordinate directly with suppliers to procure parts
  • Coordinate and execute the manufacturing and integration of fluids systems
  • Incorporate design for manufacturing best practices into designs to improve production efficiency
  • Coordinate and execute development and qualification testing of fluids systems
  • Define and manage the schedule and budget for your fluids systems

Qualifications

  • Bachelor's degree in mechanical or aerospace engineering, or similar
  • 4+ years of experience in design, build, and/or testing of rocket fluids systems, rocket engines, and valves
  • 1+ years of experience in leading a technical project
  • Exceptional command of fundamentals, including compressible flow, thermodynamics, structures, control systems, cryogenics, and instrumentation
  • Strong knowledge with data analysis and data processing
  • Extensive experience with CAD tools and configuration management (Siemens NX and Teamcenter preferred)
  • Proficiency with understanding and maintaining revision-controlled P&ID's
  • Proficiency with aerospace standard fasteners, seals, tubing, fittings, and commercial off the shelf hardware
  • Proficiency with instrumentation including pressure transducers, thermocouples, accelerometers, and flow meters
  • Proficiency with fluid analysis tools (Siemens AMESim, Thermal Desktop, Python, EES, REFPROP, Excel, Matlab, or equivalent)
  • Proficiency in GD&T, tolerance stackups, and material selection
  • Hands on experience performing fabrication and assembly of components
  • Excellent written and verbal communication

Benefits

  • Equity - We are pleased to offer equity in the form of stock options to all regular, full-time employees. 
  • Comprehensive benefits program including subsidized medical, dental, and vision insurance 
  • Company-paid life and disability insurance 
  • 401(k) plan with employer match 
  • 4 weeks' Paid Time Off  
  • Holidays - 10 days (including an end-of-year closure) 
  • Paid Family/Parental Leave  
  • On-site gym or monthly wellness stipend (depending on location) 
  • Dog friendly offices! 

Compensation

Target levels:

  • Level 3 Range: $129,150 - $193,620
  • Level 4 Range: $151,305 - $252,105
  • Level 5 Range: $176,505 - $327,810

Our job posts are intentionally written to attract a wide variety of experience levels, and we make decisions about the right fit on a per-candidate basis. 

Your actual level and base salary will be decided based on your specific experience and skill level.
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