I am a first-year PhD candidate under CIFRE contract at Wallace Technologies, a DeepTech startup specializing in advanced thermal solutions and energy efficiency optimization. I am jointly affiliated with the Georges Friedel Laboratory (LGF, UMR CNRS 5307) at Mines Saint-Étienne. My doctoral research focuses on the fabrication of thin-walled structures using Laser Powder Bed Fusion (L-PBF) for compact heat exchangers in nuclear and aerospace applications. I investigate the optimization of manufacturing parameters and fabrication strategies to ensure dimensional accuracy, mechanical integrity, and surface quality control of 316L stainless steel thin-walled components. My work addresses the scientific and technological challenges associated with scaling up from prototypes to industrial-scale production, combining process optimization, material characterization, and quality assurance. This research is conducted within both academic and industrial environments, bridging fundamental materials science with practical manufacturing applications.