Design, develop, prototype, test, and support mechanical/electromechanical water heater and boiler systems. Create 3D CAD models and GD&T drawings in PTC Creo, develop manufacturing documentation (BOMs, assembly drawings, routers), troubleshoot system issues, liaise with suppliers, and implement manufacturing processes. Hands-on prototyping and knowledge of heat exchangers, thermal transfer, sheet metal, castings, O-rings, piping, and machining required.