IS

Senior Thermal Engineer (m/f/d)

Isar Aerospace SE
Ottobrunn, Germanyfull_timePosted 11 Jun 2026

About the role

<p><strong><span lang="EN-US">Mission Brief </span></strong></p> <p><span lang="EN-US">You will be responsible for defining the thermal environment and architecture of the vehicle, ranging from detailed thermal modeling and system level coupled loads analyses and to active and passive thermal control design. You will be in charge of the development, execution, and correlation of thermal models using FEM/FDM/FVM tools and test data. The decisions you make will directly support hardware qualification, test planning, and system-level design choices, ultimately enhancing the thermal robustness, performance, and reliability of the vehicle throughout its mission.</span></p> <p><span class="TextRun SCXW114497174 BCX8" lang="EN-US" data-contrast="auto"><span class="NormalTextRun CommentStart CommentHighlightPipeRest CommentHighlightRest SCXW114497174 BCX8">Your Role in Our Space Mission</span><span class="NormalTextRun CommentHighlightRest SCXW114497174 BCX8">:</span></span><span lang="EN-US"><span class="EOP CommentHighlightPipeRest SCXW114497174 BCX8" data-ccp-props="{"201341983":0,"335551550":6,"335551620":6,"335559740":360}"> </span></span></p> <ul> <li>Own the vehicle-level thermal architecture, including active and passive thermal control design for the avionic components and payloads</li> <li>Perform Thermal Coupled Loads Analysis and develop detailed thermal models using FEM and/or FVM, FDM methods</li> <li>Develop, execute, and correlate thermal models using tools such as SIMCenter, STAR-CCM+ and Thermal Desktop supported by component tests and flight data</li> <li>Review, assess, and approve component- and assembly-level designs for thermal flight readiness</li> <li>Create and maintain specifications and design documentation such as Fluid Plans, Test Plans and Procedures, Test and Analysis Reports, Instrumentation Plans, Work Instructions etc.</li> <li>Develop tools, workflows, and standards to improve efficiency, consistency, and repeatability across thermal engineering activities</li> <li>Support integration, test, and launch-site operations as subject-matter expert on system thermal performance</li> <li>Support with your expertise other technical departments</li> </ul> <p> </p> <p><strong><span lang="EN-US"><span class="EOP CommentHighlightPipeRest SCXW114497174 BCX8" data-ccp-props="{"201341983":0,"335551550":6,"335551620":6,"335559740":360}">Qualification Checklist&nbsp

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Company

Isar Aerospace SE

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