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Fluid Systems Engineer Jobs (NOW HIRING)

Astro Mechanica

Senior Fluid Systems Engineer

San Francisco, CA · On-site

$150K - $225K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

WHO YOU ARE Astro Mechanica is looking for a Senior Fluid Systems Engineer to join our growing team. The ideal candidate is someone who has a deep-seated understanding of complex system dynamics, and ...

Relativity Space

Fluid Systems Engineer II

Long Beach, CA · On-site

$104K - $156K/yr

  • PTO

As a Vehicle Fluid Systems Engineer, you will be responsible for the fluid system architecture and function for a given vehicle fluid subsystem. You will apply expertise in system architecture ...

Relativity Space

Fluid Systems Engineer II

Long Beach, CA · On-site

$104K - $156K/yr

  • PTO

As a Vehicle Fluid Systems Engineer, you will be responsible for the fluid system architecture and function for a given vehicle fluid subsystem. You will apply expertise in system architecture ...

Reaxiomatic

Staff Fluid Systems Engineer

San Diego, CA · On-site

Role Overview The Staff Fluid Systems Engineer is responsible for the architecture and delivery of a complete fluid system on the company's first product. This role owns the subsystem from initial ...

Firefly Aerospace

WI · On-site

$120 - $150/hr

  • Medical

  • Dental

  • Vision

  • PTO

As a Principal Propulsion Engineer, you'll own the design, development, integration, test, and qualification of flight fluid systems. Working closely with engineering, manufacturing, and integration ...

Blue Origin

Fluid Systems Engineer III

Denver, CO

$110K - $155K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Bachelor's degree in mechanical engineering, aerospace engineering, or equivalent * 5+ years of professional engineering experience with complex fluid systems or similar * Demonstrated experience ...

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Fluid Systems Engineer information

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$53.5K

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How much do fluid systems engineer jobs pay per year?

As of Aug 17, 2026, the average yearly pay for fluid systems engineer in the United States is $127,215.00, according to ZipRecruiter salary data. Most workers in this role earn between $98,000.00 and $157,000.00 per year, depending on experience, location, and employer.

What does a fluid systems engineer do?

A Fluid Systems Engineer designs, analyzes, and maintains systems that control the flow of liquids and gases in various applications, such as aerospace, automotive, and industrial processes. They ensure efficient performance, safety, and regulatory compliance by using simulations, testing, and system optimization. Their work involves selecting appropriate materials, pumps, valves, and piping configurations. Additionally, they collaborate with multidisciplinary teams to integrate fluid systems into larger engineering projects.

What does the typical day-to-day work look like for a fluid systems engineer?

A Fluid Systems Engineer’s day often involves designing, analyzing, and optimizing systems that control the flow of liquids and gases, including reviewing project drawings, performing simulations, and conducting calculations to ensure efficiency and safety. You may collaborate closely with project managers, other engineers, and technicians to resolve technical challenges and oversee system installation and testing. Site visits to inspect current systems and attend meetings with clients or production teams are also common. This dynamic role offers variety, blending hands-on problem-solving with technical project management and teamwork across different project phases.

What are the key skills and qualifications needed to thrive in the fluid systems engineer position, and why are they important?

To thrive as a Fluid Systems Engineer, a solid background in mechanical or chemical engineering, along with expertise in fluid dynamics and thermodynamics, is essential. Proficiency in using CAD software, simulation tools such as ANSYS Fluent or MATLAB, and familiarity with relevant industry standards or certifications like PE licensure are highly beneficial. Strong analytical thinking, effective communication, and problem-solving abilities enable successful collaboration with multidisciplinary teams and stakeholders. These skills ensure accurate system design, efficient troubleshooting, and safe, reliable operation of fluid systems across various industries.

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Fluid Systems Engineer jobs near you
Infographic showing various Fluid Systems Engineer job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 9% Part Time, 4% Contract, and 1% Nights. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution, with an average salary of $127,215 per year, or $61.2 per hour.

Senior Fluid Systems Engineer

Astro Mechanica

San Francisco, CA • On-site

$150K - $225K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 10 days ago

Job description

ABOUT US:
Astro Mechanica is a vertically integrated aerospace company building a faster, more connected future. Our mission is to democratize high-speed flight by making supersonic travel flexible, accessible, and sustainable. We believe that rapid, on-demand, point-to-point global mobility will become the new standard for moving people and goods across the planet. To achieve this, we are integrating our advanced airframe and engine technologies-which include Duality™, our proprietary dual-use propulsion system-with a new flight operations model to make supersonic transport as efficient and economical as commercial air travel is today. In the near term, we are developing adaptable, high-speed systems to close aircraft performance gaps for the United States government.
WHO WE ARE:
We're a team of passionate engineers dedicated to advancing aerospace. We're generalists with specialist depth, united by a flat structure and a shared obsession with building things that work well. We move fast, stay pragmatic, and let engineering excellence speak louder than hierarchy.
WHO YOU ARE
Astro Mechanica is looking for a Senior Fluid Systems Engineer to join our growing team. The ideal candidate is someone who has a deep-seated understanding of complex system dynamics, and can take full ownership of modeling the thermal/fluid network of a novel engine architecture. Your work at Astro Mechanica will have a direct impact on the configuration and performance of the turboelectric adaptive jet engine.
In this role, your mission will be to architect, analyze, build, and test critical fluid systems for the propulsion systems. You will collaborate between propulsion, aircraft, and test teams to deliver optimized fluid hardware for the flight vehicle, proven through rigorous ground testing. You are attentive to detail and enjoy solving nuanced, interconnected problems.
WHAT YOU'LL DO
  • Architect fluid system networks supporting the propulsive engine fuel supply and thermal management
  • Predict behavior through detailed analysis (Amesim, Thermal Desktop, EES, REFPROP)
  • Design custom hardware and establish subsystem testing to validate component performance
  • Mechanical layout of fluid systems while considering design for manufacturing, installation, and maintenance
  • Analyze test data for characterization hardware behavior and performance
  • Improve and maintain the accuracy of simulation models through anchoring to historical and internally generated test data
  • Define instrumentation placement with understanding of measurement limitations
  • Diagnose hardware/software problems efficiently and perform corrective actions

WHAT WE'RE LOOKING FOR:
  • 5+ years hands-on experience with fluidic and propulsion systems, test operations
  • Foundational knowledge of fluid dynamics, thermodynamics, and compressible flow
  • Understanding of fluid systems and instrumentation hardware (pressure, temperature, flow meters, pumps, heat exchangers, valves, regulators, pneumatics)
  • Familiarity with test instrumentation, data reduction, and anchoring analysis with experimental results
  • Experience with P&ID's, 0D/1D thermal/fluid networks for gases and liquids
  • Takes initiative for continuous improvement (not just completing assigned tasks)
  • Flexibility to work in fast-paced and high-growth environment
  • Attentive to detail and maintain a high level of quality in all work

PERKS & BENEFITS
  • Comprehensive medical, dental, and vision insurance, including Flexible Spending Accounts (FSA)
  • 401(k) program and transparent stock option plan
  • Self-managed and flexible time-off policy, including PTO, paid holidays, and sick time
  • Flexible work environment

ADDITIONAL INFORMATION
Astro Mechanica is an equal opportunity employer. We proudly recruit and hire a diverse workforce and are committed to creating an inclusive environment for all employees.

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