13 thermodynamics engineer jobs at 6 companies in Seattle, WA
2mo
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Principal Thermal Engineer
Seattle or Brevard County or Denver or Washington
$190k-$272k/yr OnsiteFull Time
15+ YOEBS in Mechanical/Aerospace Engineering, 15+ years thermal/thermodynamic analysis experience, expertise with thermal/fluids modeling tools, reviewing junior engineers; MS/PhD and rocket/cryogenic/TPS experience preferred.
Thermal Desktop, SINDA/FLUINT, ANSYS Classic, MATLAB, Python, Git, CREO
3w
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Senior/Principal Turbomachinery Engineer
Seattle or North America
$175k-$275k/yr OnsiteFull Time
3+ YOEBachelor’s degree in mechanical or aerospace engineering and 3+ years designing, analyzing, and testing high-speed rotating machinery; experience with thermodynamics, CAD, CFD, FEA, and rapid prototyping.
Siemens NX, AxStream, CFTurbo, ANSYS CFX, ANSYS Fluent, OpenFOAM, Numeca, Python, MATLAB, C++, CAD, CFD, FEA
2mo
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Senior Fluids Engineer
Kent, Washington, United States
$129k-$328k/yr OnsiteFull Time
4+ YOEBachelor's in mechanical/aerospace engineering, 4+ years designing/testing rocket fluids systems, 1+ year leading technical projects, strong fundamentals in compressible flow/thermodynamics/cryogenics, CAD and data-analysis proficiency, hands-on fabrication experience.
Siemens NX, Teamcenter, Siemens AMESim, Thermal Desktop, Python, EES, REFPROP, Microsoft Excel, Matlab, P&ID
1w
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Senior Thermal Analysis Engineer
Seattle or Florida or Huntsville or Denver or Los Angeles or Washington or United States
$144k-$220k/yr OnsiteFull Time
8+ YOEBachelor's degree in mechanical or aerospace engineering, 8+ years of thermal engineering or analysis experience, and hands-on aerospace thermal control systems experience. Requires spacecraft heat transfer, fluid flow, thermodynamics, and thermal analysis tools expertise.
Thermal Desktop, SINDA/FLUINT, ANSYS Workbench, MATLAB, Python
2d
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Thermal Liaison Engineer, Amazon Leo Satellite Engineering
Redmond, Washington, United States
$117k-$160k/yr OnsiteFull Time
3+ YOEBachelor's degree in mechanical engineering or equivalent, 3+ years in aerospace liaison or MRB roles, thermodynamics or fluid dynamics knowledge, integration and testing experience, and MES familiarity.
Manufacturing Execution System (MES), Siemens NX, SolidWorks, Six Sigma, Statistical Analysis, ANSI Y14.5M-1994
2mo
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Senior Valves & Actuators Engineer
Kent, Washington, United States
$129k-$328k/yr OnsiteFull Time
5+ YOEBachelor's in mechanical/aerospace engineering, 5+ years designing, building, and testing valves, hands-on fabrication experience, strong fundamentals in fluids, thermodynamics, structures, control systems and instrumentation, knowledge of P&IDs and aerospace hardware, excellent communication.
Siemens NX, Siemens AMESim, REFPROP, Microsoft Excel, Matlab, Teamcenter
1mo
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Sr. TCA Mechanical Design Engineer
Seattle, Washington, United States
$185k-$210k/yr OnsiteFull Time
Bachelor's in engineering, strong mechanical design and DFM/DFA skills, hands-on manufacturing experience (CNC, additive, welding/brazing), thermodynamics/fluid/structural proficiency, tooling and test campaign experience.
Ansys Mechanical, Fluent, Thermal Desktop, CNC, EDM, CMM
1mo
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Injector Design and Development Engineer
Seattle, Washington, United States
$130k-$180k/yr OnsiteFull Time
5+ YOEBachelor's in engineering or applied physics, 5+ years mechanical design for rapid prototyping, strong thermodynamics/fluid/structural fundamentals, hands-on injector lifecycle ownership, test campaign planning and hotfire analysis.
Ansys Mechanical, Fluent, Thermal Desktop
5d
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Principal Engineer, Fluid & Thermal Systems (R4793)
Seattle, Washington, United States
OnsiteFull Time
10+ YOE10+ years in fluid or thermal system design; bachelor's or advanced engineering degree; expertise in heat transfer, fluid dynamics, thermodynamics, modeling, testing, 3D CAD, and supplier management.
MATLAB Simscape, Amesim, Microsoft Excel, MATLAB, Python, Siemens NX, 3D CAD
2w
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Fluid Systems & Propulsion Engineer I – Early Career (2026 starts)
Kent or Huntsville or Van Horn or Cape Canaveral or Lancaster or Pensacola
$81k-$114k/yr OnsiteFull Time
Bachelor's degree in mechanical, aerospace, mechatronics, or related engineering; degree earned within one year and start by Fall 2026. Requires fundamentals in propulsion, fluids, thermodynamics, and structures.
GD&T, ASME Y14.5, 3D CAD, Finite Element Analysis (FEA), Defense Biometric Identification System (DBIDS), Commercial Driver's License (CDL)
3w
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Fluids Analyst II – Fluids & Propulsion – Crewed Lunar Lander
Denver or Melbourne or Seattle or Los Angeles or Littleton
$91k-$127k/yr OnsiteFull Time
3+ YOEBachelor's degree in mechanical or aerospace engineering, 3+ years of thermal/fluids analysis, CFD tools, and knowledge of fluid mechanics, heat transfer, and thermodynamics.
Thermal Desktop, Sinda/Fluint, Microsoft Excel, ANSYS Fluent, FLOW3D
2mo
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Building Enclosure Consultant / Senior Project Manager
Fridley or Kent
$115k-$140k/yr OnsiteFull Time
7+ YOEBachelor's in Architecture/Engineering + 7+ years in building enclosure consulting (or 10+ years experience), strong technical writing, project management, valid driver's license, ability to travel up to 25%, ability to perform field physical tasks.
THERM, WUFI, EnergyPlus, COMcheck, Microsoft Office Suite, Bluebeam, AutoCAD, Revit, BIM, Sketch-up
1d
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Building Enclosure Consultant / Senior Project Manager
Seattle or Kent
$110k-$160k/yr FieldFull Time
7+ YOEBachelor's degree in architecture, engineering, or architectural engineering with 7+ years of building enclosure experience, or 10+ years in lieu of a degree; requires project management, technical writing, travel, and a valid driver's license.
THERM, WUFI, EnergyPlus, COMcheck, Microsoft Office Suite, Bluebeam, AutoCAD, Revit, BIM, Sketch-up