Jay Liu, PhD, CMfgE, is a Mechanical Engineering Analyst at Commonwealth Fusion Systems, specializing in fitness for service analysis as per API 579-1/ASME FFS-1. Previously, Liu served as a Principal Engineer at Medtronic, where methodologies were established to analyze R&D products during operation and transportation, employing advanced analytical techniques. Liu's prior experience includes roles such as Products Enhancement Engineer at Baker Hughes, Products Performance Engineer at TechnipFMC, Engineering Lead at Erin Energy, Lead Engineer at DORIS, and Structural Engineer at Wild Well, along with significant contributions at Subsea Technology Inc. and Schlumberger. Liu holds a PhD in Mechanical Analysis with a minor in Computer Science from the University of Notre Dame.