Semidynamics in Barcelona seeks an experienced Senior IC Thermal Engineer to own the thermal path from die junction to facility water, including on-die hotspots, package spreading, cold plate design, sled airflow and rack-level heat rejection. As a Senior IC, you set the thermal budget the hardware team designs against, leading CFD studies, thermal validation, and cross-functional collaboration with mechanical and power teams. #J-18808-Ljbffr