81 thermal jobs at 41 companies in Washington, DC
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Spacecraft Thermal Engineer
Reston, Virginia, United States
$135k-$175k/yr OnsiteFull Time
3+ YOEBS in engineering/physics; 3-5+ years in thermal engineering; spacecraft thermal modeling; TVAC testing; Thermal Desktop/Icepak; strong cross-functional collaboration; ability to obtain security clearance.
Thermal Desktop, Icepak, TVAC, Python, C++, MATLAB
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Mid-Level Thermal Engineer
Washington, District of Columbia, United States
$113k-$160k/yr OnsiteFull Time
5+ YOEU.S. citizen with active Secret clearance, 5+ years thermal/aerothermal experience for aerospace, proficiency with TRASYS, SINDA/Fluint, Thermal Desktop, FORTRAN, Python, STAR-CCM+, HEEDS, and Cart3D.
TRASYS, SINDA/Fluint, Thermal Desktop, FORTRAN, Python, STAR-CCM+, HEEDS, Cart3D
1mo
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Spacecraft Thermal Engineer
Reston, Virginia, United States
$140k-$180k/yr HybridFull Time
5+ YOEBachelors in engineering, 5+ years spacecraft thermal design experience, Thermal Desktop proficiency, strong heat transfer knowledge, payload lifecycle experience, and strong communication skills.
Thermal Desktop, MATLAB, SINDA, Python
2w
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Staff Thermal Analysis Engineer
Linthicum, Maryland, United States
$169k-$254k/yr OnsiteFull Time
10+ YOEU.S. citizen able to obtain DoD Secret clearance; advanced degree plus relevant experience; 10+ years thermal and electronics thermal analysis experience; expertise in thermal management technologies and program delivery.
ANSYS Icepak, ANSYS Thermal Desktop, ANSYS Fluent
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2027 Graduate PhD - Thermal Engineer
Laurel, Maryland, United States
$105k-$245k/yr OnsiteFull Time
7+ YOEBS in mechanical/aerospace engineering or related; 7+ years thermal/aerothermal experience supporting vehicle design; understanding of vehicle-level thermal integration; strong verbal/written communication; ability to obtain Interim Secret/Secret clearance.
computational fluid dynamics (CFD)
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Senior Thermal Analysis Engineer
El Segundo or Washington or Huntsville
$140k-$179k/yr OnsiteFull Time
3+ YOE3+ years developing passive and active thermal control systems; proficiency with Thermal Desktop, SINDA/FLUINT, and MATLAB; experience anchoring models to test/flight data and planning TVac testing.
Thermal Desktop, SINDA/FLUINT, MATLAB
3w
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Thermal/Hydraulics Engineer
Bethesda, Maryland, United States
$110k-$240k/yr OnsiteFull Time
Bachelor's in nuclear or mechanical engineering, experience in reactor thermal/hydraulic design, proficiency with COBRA, VIPRE, STAR-CCM+, strong fluid mechanics/heat transfer/two-phase flow knowledge, and experience integrating test data into models.
COBRA, VIPRE, STAR-CCM+
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Senior Spacecraft Thermal Engineer
Rockville, Maryland, United States
$140k-$200k/yr OnsiteFull Time
7+ YOEBS in Mechanical or Aerospace Engineering; 7+ years spacecraft thermal experience; Thermal Desktop/SINDA/FLUINT proficiency; spacecraft hardware experience; autonomous leader.
Thermal Desktop, SINDA/FLUINT
2mo
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Thermal Mechanical Engineer
Baltimore, Maryland, United States
OnsiteFull Time
5+ YOEBSc or MSc in Mechanical Engineering (BSc minimum). 5+ years in high-temperature systems, reactor or process equipment design, thermal systems engineering. Experience with SolidWorks/Inventor and ANSYS/COMSOL (CFD/FEA); knowledge of high-temperature materials and ASME/piping design.
SolidWorks, Inventor, ANSYS, COMSOL, CFD, FEA
3w
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Principal Engineer, Advanced Thermal Modeling
Jessup, Maryland, United States
$108k-$185k/yr OnsiteFull Time
12+ YOE2+ MgmtBachelor's in mechanical/thermal field, ~12+ years thermal modeling experience, 2+ years leading technical teams, expertise in thermodynamics/heat transfer/fluid dynamics, experience with modeling, simulation, validation and communicating results.
MATLAB, EES, Python, C#, C++, VBA, Modelica/Dymola, EnergyPlus, CFD
3d
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2026 Intern Conversion - Thermal Engineer I
Seattle or Van Horn or Denver or Huntsville or Florida or Arlington
$80k-$123k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
Completed a 2026 Blue Origin internship; enrolled in or recently graduated from college; B.S. in mechanical, aerospace, or astronautical engineering; U.S. work authorization; strong communication and independent teamwork skills.
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Thermal Hydraulics Engineer III-V
Rockville, Maryland, United States
$115k-$200k/yr OnsiteFull Time
5+ YOEBachelor's in mechanical or related engineering, proficiency with engineering hand calculations, CFD experience (STAR-CCM+, Fluent or similar), CFD model development, heat transfer/fluid mechanics analysis, V&V, and design documentation; 5+ years experience for Level III (more for higher levels).
STAR-CCM+, Fluent, Computational Fluid Dynamics (CFD)
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Boyd Thermal by Eaton - Senior Mechanical Engineer
Fredericksburg, Virginia, United States
RemoteFull Time
7+ YOEBachelors in Mechanical Engineering, 7+ years engineering experience, SolidWorks (2018+), FEA, CNC machining and manufacturing experience; experience with refrigeration, pneumatics and thermal components preferred.
SolidWorks, FEA, CNC, PDM
3w
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Thermal Field Service Technician
Ashburn, Virginia, United States
FieldFull Time
Experience with mechanical and electrical systems, hand/power tools, test equipment; computer aptitude; ability to work at heights; lift up to 75 lbs; EPA608 certification within 6 months; valid driver’s license.
1mo
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Project Manager-Thermal Generation
Houston or Baltimore
$118k-$177k/yr OnsiteFull Time
15+ YOE5+ MgmtB.S. in engineering, 15+ years power generation experience, 5+ years business development, PE preferred, valid driver's license, travel to US/Canada, strong PM, leadership, and Microsoft 365/Excel skills.
Microsoft 365, Microsoft Teams, Microsoft SharePoint, Microsoft Excel
2mo
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Product Manager - Sustaining & Compliance (Frederick, Maryland, MD, US, 21704)
Frederick, Maryland, United States
OnsiteFull Time
5+ YOELead sustaining and compliance for HVAC/data center cooling portfolio; 5+ years in HVAC/thermal systems; Bachelor's in Mechanical Engineering; cross-functional collaboration.
3mo
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Senior Mechanical Engineer (CFD and FEA)
Columbia, Maryland, United States
$110k-$130k/yr HybridFull Time
Lead CFD and FEA analysis for data center products; BS in mechanical engineering; hands-on CFD/FEA experience; HVAC/thermal-fluid systems knowledge.
ANSYS Fluent/CFX, SolidWorks Flow Simulation, Autodesk CFD, OpenFOAM, ANSYS Mechanical, Abaqus, NASTRAN, Onshape, SolidWorks, Creo, Python
19h
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Senior Mechanical Engineer
Germantown, Maryland, United States
$91k-$130k/yr HybridFull Time
8+ YOEBachelor's degree in mechanical engineering or related field and 8+ years of mechanical engineering experience in product design, development, mechanical systems, electronics packaging, and thermal management.
3D modeling, Creo, SolidWorks, 3D printing
2mo
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RF Engineer Instructor (active Top Secret clearance)
Frederick or Colorado or California
RemoteFull Time
15+ YOERF engineering with >15 years product development, RF/EM/thermal simulation, PEX experience, Space payload knowledge, TS/SCI clearance within 24 months.
PEX, RF simulation, EM and thermal modelling
1w
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Mechanical Engineer II
Columbia, Maryland, United States
$130k-$200k/yr OnsiteFull Time
5+ YOEBachelor’s degree in mechanical engineering or related field, 5+ years of experience, thermal engineering and mechanical design expertise, SolidWorks or 3D CAD proficiency, and active Secret clearance.
SolidWorks, ANSYS, Computational Fluid Dynamics (CFD), 3D CAD, PCB
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