The Principal Engineer/Scientist is expected to influence technology strategies, identify opportunities for innovation and process improvement, develop intellectual property, mentor technical teams, and deliver differentiated technologies that enhance product performance, manufacturing capability, and long-term competitiveness for Solstice's PVD sputtering Targets business. Working across R&D, Engineering, Operations, Quality, Commercial, customers, and external partners, the position drives the development of new technologies, solves complex process and product challenges, and strengthens organizational technical capabilities.